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c.haslam

How to have a line show over an image in GDI+

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c.haslam

In my code, the mouse wheel causes the line to move up and down. It does move down to where the picture is, but is not seen there. This can be observed by scrolling down to the picture, and then up again: the line reappears as expected.

How can I get the line to show on the picture? This seems to be a matter of transparency, but I have not found a way of getting the background of $graphLine to be transparent.

The code is now:

#include <ButtonConstants.au3>
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
Opt('MustDeclareVars',1)

Global Const $MK_SHIFT = 0x4
Global Const $MK_CONTROL = 0x8

GUIRegisterMsg($WM_MOUSEWHEEL, "WM_MOUSEWHEEL")

Global $gY0,$gY1,$gForm1,$glblLine,$glblPic

main()

Func main()
$gForm1 = GUICreate("Form1", 623, 601, 192, 114)
$glblLine = GUICtrlCreateLabel("", 8, 8, 604, 137)
$glblPic = GUICtrlCreateLabel("", 8, 8, 589, 500)
Local $btn = GUICtrlCreateButton("Rotate", 472, 560, 65, 25)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###

    Local $oldY0,$oldY1

    _GDIPlus_Startup()


    Local $h = GUICtrlGetHandle($glblLine)  ; limit graphics to area of $label
    Local $GraphicLine = _GDIPlus_GraphicsCreateFromHWND($h)
    Local $hPen = _GDIPlus_PenCreate(0xFF000000,2)
    Local $image = _GDIPlus_ImageLoadFromFile('H:\a\P5130021.jpg')
    Local $h = GUICtrlGetHandle($glblPic)
    Local $GraphicPic = _GDIPlus_GraphicsCreateFromHWND($h)
    _GDIPlus_GraphicsDrawImage($GraphicPic,$image,0,0)
    $gY0 = 67
    $gY1 = 67

    _GDIPlus_GraphicsClear($GraphicLine,0)
    _GDIPlus_GraphicsDrawLine($GraphicLine, 10, $gY0, 350, $gY1, $hPen)

    ; Loop until the user exits.
    While True
        If $gY0<>$oldY0 Or $gY1<>$oldY1 Then
            _GDIPlus_GraphicsClear($GraphicLine,0xFFD4D0C8)
            _GDIPlus_GraphicsDrawLine($GraphicLine, 10, $gY0, 590, $gY1, $hPen)
            $oldY0 = $gY0
            $oldY1 = $gY1
        Else
            Switch GUIGetMsg()
                Case $GUI_EVENT_CLOSE,$btn
                    Exit
            EndSwitch
        EndIf
    WEnd

    ; Clean up resources
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_GraphicsDispose($GraphicLine)
    _GDIPlus_Shutdown()
EndFunc

Func WM_MOUSEWHEEL($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam, $lParam
Local Const $ymax=500
    Local $vec = GUIGetCursorInfo($gForm1)
    If $vec[4] = $glblLine Or $vec[4]=$glblPic Then
        Local $iDelta = BitShift($wParam, 16)   ; positive = up
        Local $iKeys = _WinAPI_LoWord($wParam)
        If BitAND($iKeys,$MK_CONTROL)=$MK_CONTROL Then
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                ; do nothing
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= 1
                If $iDelta < 0 And $gY0<$ymax Then $gY0 += 1
            EndIf
        Else
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                If $iDelta > 0 And $gY1>3 Then $gY1 -= 1
                If $iDelta < 0  And $gY1<$ymax Then $gY1 += 1
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= 1
                If $iDelta < 0 And $gY0<$ymax Then $gY0 += 1
                If $iDelta > 0 And $gY1>3 Then $gY1 -= 1
                If $iDelta < 0 And $gY1<$ymax Then $gY1 += 1
            EndIf
        EndIf
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_MOUSEWHEEL

Some other questions:

  • Do I really need GDI+, or is there a simpler way?
  • My code creates Graphics (canvases?) from labels. Is this legitimate?
  • I have found MSDN to be un-helpful in learning GDI+. Is there a better learning tool?
Edited by c.haslam

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UEZ
On 10/9/2017 at 5:21 AM, c.haslam said:

In my code, the mouse wheel causes the line to move up and down. It does move down to where the picture is, but is not seen there. This can be observed by scrolling down to the picture, and then up again: the line reappears as expected.

How can I get the line to show on the picture? This seems to be a matter of transparency, but I have not found a way of getting the background of $graphLine to be transparent.

The code is now:

#include <ButtonConstants.au3>
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
Opt('MustDeclareVars',1)

Global Const $MK_SHIFT = 0x4
Global Const $MK_CONTROL = 0x8

GUIRegisterMsg($WM_MOUSEWHEEL, "WM_MOUSEWHEEL")

Global $gY0,$gY1,$gForm1,$glblLine,$glblPic

main()

Func main()
$gForm1 = GUICreate("Form1", 623, 601, 192, 114)
$glblLine = GUICtrlCreateLabel("", 8, 8, 604, 137)
$glblPic = GUICtrlCreateLabel("", 8, 8, 589, 500)
Local $btn = GUICtrlCreateButton("Rotate", 472, 560, 65, 25)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###

    Local $oldY0,$oldY1

    _GDIPlus_Startup()


    Local $h = GUICtrlGetHandle($glblLine)  ; limit graphics to area of $label
    Local $GraphicLine = _GDIPlus_GraphicsCreateFromHWND($h)
    Local $hPen = _GDIPlus_PenCreate(0xFF000000,2)
    Local $image = _GDIPlus_ImageLoadFromFile('H:\a\P5130021.jpg')
    Local $h = GUICtrlGetHandle($glblPic)
    Local $GraphicPic = _GDIPlus_GraphicsCreateFromHWND($h)
    _GDIPlus_GraphicsDrawImage($GraphicPic,$image,0,0)
    $gY0 = 67
    $gY1 = 67

    _GDIPlus_GraphicsClear($GraphicLine,0)
    _GDIPlus_GraphicsDrawLine($GraphicLine, 10, $gY0, 350, $gY1, $hPen)

    ; Loop until the user exits.
    While True
        If $gY0<>$oldY0 Or $gY1<>$oldY1 Then
            _GDIPlus_GraphicsClear($GraphicLine,0xFFD4D0C8)
            _GDIPlus_GraphicsDrawLine($GraphicLine, 10, $gY0, 590, $gY1, $hPen)
            $oldY0 = $gY0
            $oldY1 = $gY1
        Else
            Switch GUIGetMsg()
                Case $GUI_EVENT_CLOSE,$btn
                    Exit
            EndSwitch
        EndIf
    WEnd

    ; Clean up resources
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_GraphicsDispose($GraphicLine)
    _GDIPlus_Shutdown()
EndFunc

Func WM_MOUSEWHEEL($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam, $lParam
Local Const $ymax=500
    Local $vec = GUIGetCursorInfo($gForm1)
    If $vec[4] = $glblLine Or $vec[4]=$glblPic Then
        Local $iDelta = BitShift($wParam, 16)   ; positive = up
        Local $iKeys = _WinAPI_LoWord($wParam)
        If BitAND($iKeys,$MK_CONTROL)=$MK_CONTROL Then
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                ; do nothing
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= 1
                If $iDelta < 0 And $gY0<$ymax Then $gY0 += 1
            EndIf
        Else
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                If $iDelta > 0 And $gY1>3 Then $gY1 -= 1
                If $iDelta < 0  And $gY1<$ymax Then $gY1 += 1
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= 1
                If $iDelta < 0 And $gY0<$ymax Then $gY0 += 1
                If $iDelta > 0 And $gY1>3 Then $gY1 -= 1
                If $iDelta < 0 And $gY1<$ymax Then $gY1 += 1
            EndIf
        EndIf
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_MOUSEWHEEL

Some other questions:

  • Do I really need GDI+, or is there a simpler way?
  • My code creates Graphics (canvases?) from labels. Is this legitimate?
  • I have found MSDN to be un-helpful in learning GDI+. Is there a better learning tool?

 

I used backdraw method to avoid flickering. Check this out:

#include <ButtonConstants.au3>
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
Opt('MustDeclareVars',1)

Global Const $MK_SHIFT = 0x4
Global Const $MK_CONTROL = 0x8

GUIRegisterMsg($WM_MOUSEWHEEL, "WM_MOUSEWHEEL")

Global $gY0,$gY1,$gForm1,$glblLine,$glblPic,$iLW,$iLH,$iW,$iH

main()

Func main()
$gForm1 = GUICreate("Form1", 623, 601, 192, 114)
$glblLine = GUICtrlCreateLabel("", 8, 8, 604, 137)
$iLW = 589
$iLH = 500
$glblPic = GUICtrlCreateLabel("", 8, 8, $iLW, $iLH)
Local $btn = GUICtrlCreateButton("Rotate", 472, 560, 65, 25)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###

    Local $oldY0,$oldY1

    _GDIPlus_Startup()


    Local $h = GUICtrlGetHandle($glblLine)  ; limit graphics to area of $label
    Local $hPen = _GDIPlus_PenCreate(0xFF000000,2)
    Local $image = _GDIPlus_ImageLoadFromFile('c:\Program Files (x86)\AutoIt3\Examples\GUI\msoobe.jpg')
    Local $h = GUICtrlGetHandle($glblPic)
    Local $GraphicPic = _GDIPlus_GraphicsCreateFromHWND($h)
    $gY0 = 67
    $gY1 = 67
    $iW = _GDIPlus_ImageGetWidth($image)
    $iH = _GDIPlus_ImageGetHeight($image)
    Local $hBitmap = _GDIPlus_BitmapCreateFromScan0($iW, $iH)
    Local $hCanvas = _GDIPlus_ImageGetGraphicsContext($hBitmap)
    _GDIPlus_GraphicsDrawImageRect($hCanvas, $image, 0, 0, $iW, $iH)
    _GDIPlus_GraphicsDrawLine($hCanvas, 10, $gY0, 350, $gY1, $hPen)

    ; Loop until the user exits.
    While True
        If $gY0<>$oldY0 Or $gY1<>$oldY1 Then
            _GDIPlus_GraphicsClear($hCanvas,0xFFD4D0C8)
            _GDIPlus_GraphicsDrawImageRect($hCanvas, $image, ($iLW - $iW) / 2, ($iLH - $iH) / 2, $iW, $iH)
            _GDIPlus_GraphicsDrawLine($hCanvas, 10, $gY0, 590, $gY1, $hPen)
            _GDIPlus_GraphicsDrawImageRect($GraphicPic, $hBitmap, 0, 0, $iW, $iH)
            $oldY0 = $gY0
            $oldY1 = $gY1
        Else
            Switch GUIGetMsg()
                Case $GUI_EVENT_CLOSE,$btn
                    Exit
            EndSwitch
        EndIf
    WEnd

    ; Clean up resources
    _GDIPlus_ImageDispose($hCanvas)
    _GDIPlus_ImageDispose($image)
    _GDIPlus_ImageDispose($hBitmap)
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_GraphicsDispose($GraphicPic)
    _GDIPlus_Shutdown()
EndFunc

Func WM_MOUSEWHEEL($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam, $lParam
Local Const $ymax=500
    Local $vec = GUIGetCursorInfo($gForm1)
    If $vec[4] = $glblLine Or $vec[4]=$glblPic Then
        Local $iDelta = BitShift($wParam, 16)   ; positive = up
        Local $iKeys = _WinAPI_LoWord($wParam)
        If BitAND($iKeys,$MK_CONTROL)=$MK_CONTROL Then
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                ; do nothing
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= 1
                If $iDelta < 0 And $gY0<$ymax Then $gY0 += 1
            EndIf
        Else
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                If $iDelta > 0 And $gY1>3 Then $gY1 -= 1
                If $iDelta < 0  And $gY1<$ymax Then $gY1 += 1
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= 1
                If $iDelta < 0 And $gY0<$ymax Then $gY0 += 1
                If $iDelta > 0 And $gY1>3 Then $gY1 -= 1
                If $iDelta < 0 And $gY1<$ymax Then $gY1 += 1
            EndIf
        EndIf
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_MOUSEWHEEL

You cannot delete the canvas and expect that the image is still on the canvas. If you delete the canvas you have to draw everything again.

I learned 90% GDI+ from this forum. There are plenty of examples - just search for it ;). Imho MSDN is not the best starting point to learn GDI+, more for advanced skills.

Edited by UEZ
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c.haslam

Many thanks for your help. I have spent several hours examining the code on this forum. It helped a bit, but your rewrite of my code really helps.

I tried changing the file loaded to a .jpg which is 1024 x 768. Only the centre of the picture showed.

I changed a line in the message loop to

_GDIPlus_GraphicsDrawImageRect($hCanvas, $image, 0,0, $iLW, $iLH)

The whole picture then showed.

It looks to me as though the lines

_GDIPlus_GraphicsDrawImageRect($hCanvas, $image, 0, 0, $iW, $iH)
    _GDIPlus_GraphicsDrawLine($hCanvas, 10, $gY0, 350, $gY1, $hPen)

before the message loop are not needed. Am I correct?

I have also changed the second argument to _GDIPlus_GraphicsClear(). Zero seems to work. (0xD4D0C8 is the default for a GUI in Koda.)

With this script running from SciTE, I switched to another application which was full screen. When I switched back, the dialog was empty except for the Rotate button. Rotating the mouse wheel brought the picture and line back.

I found WM_PAINT code on the forum. The canvas then repainted.

I no longer need $lblLine.

My code now is:

#include <ButtonConstants.au3>
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
Opt('MustDeclareVars',1)

Global Const $MK_SHIFT = 0x4
Global Const $MK_CONTROL = 0x8

GUIRegisterMsg($WM_MOUSEWHEEL, "WM_MOUSEWHEEL")
GUIRegisterMsg($WM_PAINT,'WM_PAINT')

Global $gY0,$gY1,$gForm1,$glblPic,$iLW,$iLH,$iW,$iH
Global $ghCanvas,$gImage,$ghPen,$gGraphicPic,$ghBitmap
main()

Func main()
$gForm1 = GUICreate("Form1", 623, 601, 192, 114)
$iLW = 589
$iLH = 500
$glblPic = GUICtrlCreateLabel("", 8, 8, $iLW, $iLH)
Local $btn = GUICtrlCreateButton("Rotate", 472, 560, 65, 25)
GUISetState(@SW_SHOW)

    Local $oldY0,$oldY1

    _GDIPlus_Startup()

    $ghPen = _GDIPlus_PenCreate(0xFF000000,2)
    $gImage = _GDIPlus_ImageLoadFromFile('H:\b\Jag XJR 2001.jpg')
    Local $h = GUICtrlGetHandle($glblPic)
    $gGraphicPic = _GDIPlus_GraphicsCreateFromHWND($h)
    $gY0 = 400
    $gY1 = 400
    $iW = _GDIPlus_ImageGetWidth($gImage)
    $iH = _GDIPlus_ImageGetHeight($gImage)
    $ghBitmap = _GDIPlus_BitmapCreateFromScan0($iW, $iH)
    $ghCanvas = _GDIPlus_ImageGetGraphicsContext($ghBitmap)

    ; Loop until the user exits.
    While True
        If $gY0<>$oldY0 Or $gY1<>$oldY1 Then
            Paint()
            $oldY0 = $gY0
            $oldY1 = $gY1
        Else
            Switch GUIGetMsg()
                Case $GUI_EVENT_CLOSE,$btn
                    ExitLoop
            EndSwitch
        EndIf
    WEnd

    ; Clean up resources
    _GDIPlus_ImageDispose($ghCanvas)
    _GDIPlus_ImageDispose($gImage)
    _GDIPlus_ImageDispose($ghBitmap)
    _GDIPlus_PenDispose($ghPen)
    _GDIPlus_GraphicsDispose($gGraphicPic)
    _GDIPlus_Shutdown()
EndFunc

Func WM_MOUSEWHEEL($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam, $lParam
Local Const $kYmax=$iLH-1,$kDelta=2
    Local $vec = GUIGetCursorInfo($gForm1)
    If $vec[4] = $vec[4]=$glblPic Then
        Local $iDelta = BitShift($wParam, 16)   ; positive = up
        Local $iKeys = _WinAPI_LoWord($wParam)
        If BitAND($iKeys,$MK_CONTROL)=$MK_CONTROL Then
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                ; do nothing
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= $kDelta
                If $iDelta < 0 And $gY0<$kYmax Then $gY0 += $kDelta
            EndIf
        Else
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                If $iDelta > 0 And $gY1>3 Then $gY1 -= $kDelta
                If $iDelta < 0  And $gY1<$kYmax Then $gY1 += $kDelta
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= $kDelta
                If $iDelta < 0 And $gY0<$kYmax Then $gY0 += $kDelta
                If $iDelta > 0 And $gY1>3 Then $gY1 -= $kDelta
                If $iDelta < 0 And $gY1<$kYmax Then $gY1 += $kDelta
            EndIf
        EndIf
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_MOUSEWHEEL

Func Paint()
    _GDIPlus_GraphicsClear($ghCanvas,0)
    _GDIPlus_GraphicsDrawImageRect($ghCanvas, $gImage, 0,0, $iLW, $iLH)
    _GDIPlus_GraphicsDrawLine($ghCanvas, 10, $gY0, 590, $gY1, $ghPen)
    _GDIPlus_GraphicsDrawImageRect($gGraphicPic, $ghBitmap, 0, 0, $iW, $iH)
EndFunc

Func WM_PAINT()
    _WinAPI_RedrawWindow($gForm1, 0, 0, $RDW_UPDATENOW)
    Paint()
    _WinAPI_RedrawWindow($gForm1, 0, 0, $RDW_VALIDATE)
EndFunc

Perhaps you would explain backbuffering.

This code is a prototype for a script which annotates photographs: it will be able to straighten them, so level is level: I am often off by about 2 degrees!

It will, I hope, be possible to rotate a jpeg per the angle of the line. More fun! (I may need your help there too.)


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CDebug Dumps values of variables including arrays and DLL structs, to a GUI, to the Console, and to the Clipboard

 

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UEZ

Try this:

#include <ButtonConstants.au3>
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
Opt('MustDeclareVars',1)

Global Const $MK_SHIFT = 0x4
Global Const $MK_CONTROL = 0x8
Global Const $fPi = ACos(-1), $fPi2 = $fPi / 2, $fRad = 180 / $fPi

GUIRegisterMsg($WM_MOUSEWHEEL, "WM_MOUSEWHEEL")
GUIRegisterMsg($WM_PAINT,'WM_PAINT')

Global $gX0=10,$gX1=580,$gY0,$gY1,$gForm1,$glblPic,$iLW,$iLH,$iW,$iH
Global $ghCanvas,$ghImage,$ghPen,$gGraphicPic,$ghBitmap,$ghMatrix,$ghImageClone,$ghGfxClone
main()

Func main()
$gForm1 = GUICreate("Form1", 623, 601, 192, 114)
$iLW = 589
$iLH = 500
$glblPic = GUICtrlCreateLabel("", 8, 8, $iLW, $iLH)
Local $btn = GUICtrlCreateButton("Rotate", 472, 560, 65, 25)
GUISetState(@SW_SHOW)

    Local $oldY0,$oldY1,$fAngle

    _GDIPlus_Startup()

    $ghPen = _GDIPlus_PenCreate(0xFF000000,2)
    $ghImage = _GDIPlus_ImageLoadFromFile('H:\b\Jag XJR 2001.jpg')
    Local $h = GUICtrlGetHandle($glblPic)
    $gGraphicPic = _GDIPlus_GraphicsCreateFromHWND($h)
    $gY0 = 400
    $gY1 = 400
    $iW = _GDIPlus_ImageGetWidth($ghImage)
    $iH = _GDIPlus_ImageGetHeight($ghImage)
    $ghBitmap = _GDIPlus_BitmapCreateFromScan0($iW, $iH)
    $ghCanvas = _GDIPlus_ImageGetGraphicsContext($ghBitmap)
    $ghMatrix = _GDIPlus_MatrixCreate()
    ; Loop until the user exits.
    While True
        If $gY0<>$oldY0 Or $gY1<>$oldY1 Then
            Paint()
            $oldY0 = $gY0
            $oldY1 = $gY1
        Else
            Switch GUIGetMsg()
                Case $GUI_EVENT_CLOSE
                    ExitLoop
                Case $btn
                    $ghImageClone=_GDIPlus_BitmapCreateFromScan0($iW, $iH)
                    $ghGfxClone=_GDIPlus_ImageGetGraphicsContext($ghImageClone)
                    _GDIPlus_MatrixTranslate($ghMatrix, $iW/2, $iH/2)
                    _GDIPlus_MatrixRotate($ghMatrix, Angle($gY1-$gY0, $gX1-$gX0))
                    _GDIPlus_MatrixTranslate($ghMatrix, -$iW/2, -$iH/2)
                    _GDIPlus_GraphicsSetTransform($ghGfxClone, $ghMatrix)
                    _GDIPlus_GraphicsDrawImageRect($ghGfxClone,$ghImage,0,0,$iW,$iH)
                    _GDIPlus_GraphicsDispose($ghGfxClone)
                    $ghGfxClone=_GDIPlus_ImageGetGraphicsContext($ghImage)
                    _GDIPlus_GraphicsClear($ghImage)
                    _GDIPlus_GraphicsDrawImageRect($ghGfxClone,$ghImageClone,0,0,$iW,$iH)
                    _GDIPlus_GraphicsDispose($ghGfxClone)
                    _GDIPlus_ImageDispose($ghImageClone)
                    Paint()
            EndSwitch
        EndIf
    WEnd

    ; Clean up resources
    _GDIPlus_MatrixDispose($ghMatrix)
    _GDIPlus_ImageDispose($ghCanvas)
    _GDIPlus_ImageDispose($ghImage)
    _GDIPlus_ImageDispose($ghBitmap)
    _GDIPlus_PenDispose($ghPen)
    _GDIPlus_GraphicsDispose($gGraphicPic)
    _GDIPlus_Shutdown()
EndFunc

Func WM_MOUSEWHEEL($hWnd, $iMsg, $wParam, $lParam)
    #forceref $hWnd, $iMsg, $wParam, $lParam
    Local Const $kYmax=$iLH-1,$kDelta=2
    Local $vec = GUIGetCursorInfo($gForm1)
    If $vec[4] = $vec[4]=$glblPic Then
        Local $iDelta = BitShift($wParam, 16)   ; positive = up
        Local $iKeys = _WinAPI_LoWord($wParam)
        If BitAND($iKeys,$MK_CONTROL)=$MK_CONTROL Then
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                ; do nothing
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= $kDelta
                If $iDelta < 0 And $gY0<$kYmax Then $gY0 += $kDelta
            EndIf
        Else
            If BitAND($iKeys,$MK_SHIFT)=$MK_SHIFT Then
                If $iDelta > 0 And $gY1>3 Then $gY1 -= $kDelta
                If $iDelta < 0  And $gY1<$kYmax Then $gY1 += $kDelta
            Else
                If $iDelta > 0 And $gY0>3 Then $gY0 -= $kDelta
                If $iDelta < 0 And $gY0<$kYmax Then $gY0 += $kDelta
                If $iDelta > 0 And $gY1>3 Then $gY1 -= $kDelta
                If $iDelta < 0 And $gY1<$kYmax Then $gY1 += $kDelta
            EndIf
        EndIf
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_MOUSEWHEEL

Func Paint()
    _GDIPlus_GraphicsClear($ghCanvas,0)
    _GDIPlus_GraphicsDrawImageRect($ghCanvas, $ghImage, 0,0, $iLW, $iLH)
    _GDIPlus_GraphicsDrawLine($ghCanvas, $gX0, $gY0, $gX1, $gY1, $ghPen)
    _GDIPlus_GraphicsDrawImageRect($gGraphicPic, $ghBitmap, 0, 0, $iW, $iH)
EndFunc

Func WM_PAINT()
    _WinAPI_RedrawWindow($gForm1, 0, 0, $RDW_UPDATENOW)
    Paint()
    _WinAPI_RedrawWindow($gForm1, 0, 0, $RDW_VALIDATE)
EndFunc

Func Angle($y, $x) ;return value is in degree
    Local Const $fPi = ACos(-1), $fPi2 = ACos(-1) / 2, $fRad = 180 / $fPi
    Switch $x
        Case ($x > 0)
            Return ATan($y / $x) * $fRad
        Case ($x < 0 And $y >= 0)
            Return ATan($y / $x + $fPi) * $fRad
        Case ($x < 0 And $y < 0)
            Return ATan($y / $x - $fPi) * $fRad
        Case ($x = 0 And $y > 0)
            Return $fPi2 * $fRad
        Case ($x = 0 And $y < 0)
            Return -$fPi2 * $fRad
        Case ($x = 0 And $y = 0)
            Return 0
    EndSwitch
EndFunc

 

Backbuffering means that you draw everything to the bitmap first before you copy the bitmap to the visible canvas (graphic) to avoid flickering.


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c.haslam

Thank you. Works fine, except I needed to change one line which is now

_GDIPlus_MatrixRotate($ghMatrix, -Angle($gY1-$gY0, $gX1-$gX0))

Added the minus sign.

I also added

$gy0 = 400
$gy1 = 400

after

_GDIPlus_ImageDispose($ghImageClone)

so the line returns to horizontal.

I will be studying your code. Perhaps one day I will master GDI+!

Edit: I made one other change: in Angle() I changed

Switch $x

to

Switch True

 

Edited by c.haslam

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CDebug Dumps values of variables including arrays and DLL structs, to a GUI, to the Console, and to the Clipboard

 

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c.haslam

What was here is included below. My error -- somehow.

Edited by c.haslam

Spoiler

CDebug Dumps values of variables including arrays and DLL structs, to a GUI, to the Console, and to the Clipboard

 

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c.haslam

I am looking at the Paint() function. I see two calls to _GDIPlus_GraphicsDrawImageRect():

_GDIPlus_GraphicsDrawImageRect($ghCanvas, $ghImage, 0,0, $iLW, $iLH)

and

_GDIPlus_GraphicsDrawImageRect($gGraphicPic, $ghBitmap, 0, 0, $iW, $iH)

$ghCanvas was returned by   _GDIPlus_ImageGetGraphicsContext(), so appears to a bitmap (per the Help for this function), and $ghImage was returned by  _GDIPlus_ImageLoadFromFile() so appears also to be a bitmap. So _GDIPlus_GraphicsDrawImageRect() is here copying from bitmap $ghImage to bitmap $ghCanvas. (0 .. $iLW, 0 .. $iLH) are copied, i.e. the whole of the loaded jpeg.

Then _GDIPlus_GraphicsDrawLine() draws to $ghCanvas, so both the picture and the line are in bitmap $ghCanvas.

Then _GDIPlus_GraphicsDrawImageRect() copies bitmap $gBitmap to $GraphicPic which the Help for _GDIPlus_GraphicsCreateFromHWND() says returns a graphics object.

So in one case the destination is a bitmap and in the other case it is a graphics object.

So I am confused! Please explain.

Is $ghGfxClone a Graphics object or is it a Graphics context? The Help (and most likely MSDN) says that the parameter of _GDIPlus_GraphicsDispose() is a Graphics object, but GDIPlus_ImageGetGraphicsContext($ghImageClone), per the Help, "Get the graphics context of the image"?

Or does a Graphics object have a context?

Edited by c.haslam

Spoiler

CDebug Dumps values of variables including arrays and DLL structs, to a GUI, to the Console, and to the Clipboard

 

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MouseGetPos(1))) WEnd UpdateCtrlPos($bAnim) EndIf Case $__g_iLabel_BM GUISetCursor(11, 1, $__g_hGUI_MarkArea) If $aCI[2] Then $aOldWinPos = WinGetPos($__g_hGUI_MarkArea) $aOldMPos = MouseGetPos() While $aCI[2] * Sleep(10) $aCI = GUIGetCursorInfo($__g_hGUI_MarkArea) WinMove($__g_hGUI_MarkArea, "", $aOldWinPos[0], $aOldWinPos[1], $aOldWinPos[2], $aOldWinPos[3] - ($aOldMPos[1] - MouseGetPos(1))) WEnd UpdateCtrlPos($bAnim) EndIf Case Else GUISetCursor(3, 1, $__g_hGUI_MarkArea) EndSwitch EndIf Until False EndFunc ;==>_GDIPlus_MarkScreenRegionAnimated Func UpdateCtrlPos($bAnim = True) Local Const $aGUIStartPos = WinGetPos($__g_hGUI_MarkArea) If $__g_bSelectionDone And $bAnim Then GUIRegisterMsg($WM_TIMER, "") $__g_iW = $aGUIStartPos[2] $__g_iH = $aGUIStartPos[3] ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_TL, 0, 0, $__g_iBorder, $__g_iBorder) ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_TM, ($__g_iW - $__g_iBorder) / 2, 0, $__g_iBorder, $__g_iBorder) ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_TR, ($__g_iW - $__g_iBorder - $__g_iBorder / 2), 0, $__g_iBorder, $__g_iBorder) ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_LM, 0, ($__g_iH - $__g_iBorder) / 2, $__g_iBorder, $__g_iBorder) ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_RM, ($__g_iW - $__g_iBorder - $__g_iBorder / 2), ($__g_iH - $__g_iBorder) / 2, $__g_iBorder, $__g_iBorder) ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_BL, 0, ($__g_iH - $__g_iBorder - $__g_iBorder / 2), $__g_iBorder, $__g_iBorder) ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_BM, ($__g_iW - $__g_iBorder) / 2, ($__g_iH - $__g_iBorder - $__g_iBorder / 2), $__g_iBorder, $__g_iBorder) ControlMove($__g_hGUI_MarkArea, "", $__g_iLabel_BR, ($__g_iW - $__g_iBorder - $__g_iBorder / 2), ($__g_iH - $__g_iBorder - $__g_iBorder / 2), $__g_iBorder, $__g_iBorder) If $__g_bSelectionDone And $bAnim Then GUIRegisterMsg($WM_TIMER, "PlayBorderAnim") EndFunc ;==>UpdateCtrlPos Func PlayBorderAnim() Local $aWinPos = WinGetClientSize($__g_hGUI_MarkArea), $iW = $aWinPos[0], $iH = $aWinPos[1] Local Static $fOffset = 0 Local Const $iSize = $__g_iBorder / 2 Local Const $hDC = _WinAPI_GetDC($__g_hGUI_MarkArea) Local Const $hHBitmap = _WinAPI_CreateCompatibleBitmap($hDC, $iW, $iH) Local Const $hDC_backbuffer = _WinAPI_CreateCompatibleDC($hDC) Local Const $DC_obj = _WinAPI_SelectObject($hDC_backbuffer, $hHBitmap) Local Const $hCanvas = _GDIPlus_GraphicsCreateFromHDC($hDC_backbuffer) Local Const $hPen = _GDIPlus_PenCreate(0xFF0178D7, $iSize), $hPen2 = _GDIPlus_PenCreate(0xFFFFFFFF, $iSize), _ $hBrush = _GDIPlus_BrushCreateSolid(0xFF000000 + $__g_iColor_ResizeDots), $hPen3 = _GDIPlus_PenCreate(0xFF000000) _GDIPlus_PenSetDashStyle($hPen, $GDIP_DASHSTYLEDASHDOT) _GDIPlus_GraphicsClear($hCanvas, 0xFFABCDEF) ;for faster performance direct dll calls DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen2, "float", 1 + $iSize, "float", 1 + $iSize, "float", $iW - 2 * $iSize - 2, "float", $iH - 2 * $iSize - 2) DllCall($__g_hGDIPDll, "int", "GdipSetPenDashOffset", "handle", $hPen, "float", $fOffset) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen, "float", 1 + $iSize, "float", 1 + $iSize, "float", $iW - 2 * $iSize - 2, "float", $iH - 2 * $iSize - 2) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", 0, "float", 0, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", 0, "float", 0, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", ($iW - $__g_iBorder) / 2, "float", 0, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", ($iW - $__g_iBorder) / 2, "float", 0, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", ($iW - $__g_iBorder) - 2, "float", 0, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", ($iW - $__g_iBorder) - 2, "float", 0, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", 0, "float", ($iH - $__g_iBorder) / 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", 0, "float", ($iH - $__g_iBorder) / 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", ($iW - $__g_iBorder) - 2, "float", ($iH - $__g_iBorder) / 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", ($iW - $__g_iBorder) - 2, "float", ($iH - $__g_iBorder) / 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", 0, "float", ($iH - $__g_iBorder) - 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", 0, "float", ($iH - $__g_iBorder) - 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", ($iW - $__g_iBorder) / 2, "float", ($iH - $__g_iBorder) - 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", ($iW - $__g_iBorder) / 2, "float", ($iH - $__g_iBorder) - 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipFillRectangle", "handle", $hCanvas, "handle", $hBrush, "float", ($iW - $__g_iBorder) - 2, "float", ($iH - $__g_iBorder) - 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) DllCall($__g_hGDIPDll, "int", "GdipDrawRectangle", "handle", $hCanvas, "handle", $hPen3, "float", ($iW - $__g_iBorder) - 2, "float", ($iH - $__g_iBorder) - 2, "float", $__g_iBorder + 1, "float", $__g_iBorder + 1) _WinAPI_BitBlt($hDC, 0, 0, $iW, $iH, $hDC_backbuffer, 0, 0, $SRCCOPY) $fOffset += 0.5 _GDIPlus_GraphicsDispose($hCanvas) _WinAPI_SelectObject($hDC_backbuffer, $DC_obj) _WinAPI_DeleteDC($hDC_backbuffer) _WinAPI_DeleteObject($hHBitmap) _WinAPI_ReleaseDC($__g_hGUI_MarkArea, $hDC) _GDIPlus_PenDispose($hPen) _GDIPlus_PenDispose($hPen2) _GDIPlus_PenDispose($hPen3) _GDIPlus_BrushDispose($hBrush) EndFunc ;==>PlayBorderAnim Func WM_ERASEBKGND($hWnd, $iMsgm, $wParam, $lParam) ;suppress repainting to avoid flickering but causes some other side effects #forceref $iMsgm, $wParam, $lParam Local Const $hBrush = _WinAPI_CreateSolidBrush(0xEFCDAB) ;BGR format ;~ _WinAPI_RedrawWindow($__g_hGUI_MarkArea, 0, 0, BitOR($RDW_NOERASE, $RDW_NOCHILDREN, $RDW_NOFRAME, $RDW_VALIDATE)) _WinAPI_SetClassLongEx($__g_hGUI_MarkArea, $GCL_HBRBACKGROUND, $hBrush) _WinAPI_DeleteObject($hBrush) Return 0 EndFunc ;==>WM_ERASEBKGND  
      Just press the lmb and move your mouse. When lmb is released you can adjust the size of the window by dragging the white rectangle to any direction. Rmb will move the marked area.
      Press ESC to get the coordinates of the marked region.
      If you have any improvements, please post it here.
       
      Tested on Win10 x64 only.
       
    • JoeWagner
      By JoeWagner
      I'm building a tool to remotely monitor CPU usage on my server.
      I have a working tool but I have a few issues I'd like some help with.
      1. The app uses more system memory on a continual growth rate...  It eventually starts displaying strange artifacts and the background flashes between black and and white behind the GDI+ elements.  I determined this couldn't be left to run for any amount of time (greater than 15-20 minutes) - Very frustrating.
      I suspect it's because it keeps drawing new GDI+ elements to replace the previous cycle ... the $bar1 = "" is enough to remove the image and allow the new image to be drawn there, but I don't have a handle for the original GDI+ element to throw it away... Not sure where they go...
      I also suspect there could be a better way to do what I'm doing here, but from a problem solving perspective - this is what I came up with - I will accept suggestions for how better to accomplish the same / better or acceptable results  
      I will not however accept corrections on grammar, punctuation or commenting - I didn't comment this as I was going, I use the variables that make sense to me (or as they were when I lifted them from the scraps I found on the internet) and you can never be too careful with punctuation.
      2. I have a WMI query that is used to remotely pull the CPU data from the server - if I supply the wrong credentials the app crashes... I tried to make it show an error and go back to allow me to try again ... doesn't work. Any help with catching that error and preventing the crash would be super helpful. (works great if the credentials are correct; domain or local)
       
      The whole thing below... 
      #include <Date.au3> #include <WindowsConstants.au3> #include <GuiConstantsEX.au3> #include <EditConstants.au3> #include <ButtonConstants.au3> #include <GDIPlus.au3> Global $__g_hGDIPDll Global $graph[21] Global $timer, $timeout = 500 Global $hFlag = 0 $timer = TimerInit() $main = GUICreate("CPU Graph", 125, 220, Default, Default, Default, BitOR($WS_EX_TOOLWINDOW, $WS_EX_TOPMOST)) $bar1 = GUICtrlCreatePic("", 10, 10, 5, 100) $bar2 = GUICtrlCreatePic("", 15, 10, 5, 100) $bar3 = GUICtrlCreatePic("", 20, 10, 5, 100) $bar4 = GUICtrlCreatePic("", 25, 10, 5, 100) $bar5 = GUICtrlCreatePic("", 30, 10, 5, 100) $bar6 = GUICtrlCreatePic("", 35, 10, 5, 100) $bar7 = GUICtrlCreatePic("", 40, 10, 5, 100) $bar8 = GUICtrlCreatePic("", 45, 10, 5, 100) $bar9 = GUICtrlCreatePic("", 50, 10, 5, 100) $bar10 = GUICtrlCreatePic("", 55, 10, 5, 100) $bar11 = GUICtrlCreatePic("", 60, 10, 5, 100) $bar12 = GUICtrlCreatePic("", 65, 10, 5, 100) $bar13 = GUICtrlCreatePic("", 70, 10, 5, 100) $bar14 = GUICtrlCreatePic("", 75, 10, 5, 100) $bar15 = GUICtrlCreatePic("", 80, 10, 5, 100) $bar16 = GUICtrlCreatePic("", 85, 10, 5, 100) $bar17 = GUICtrlCreatePic("", 90, 10, 5, 100) $bar18 = GUICtrlCreatePic("", 95, 10, 5, 100) $bar19 = GUICtrlCreatePic("", 100, 10, 5, 100) $bar20 = GUICtrlCreatePic("", 105, 10, 5, 100) $host = GUICtrlCreateInput("Host", 10, 115, 100, 20, $ES_AUTOHSCROLL) $user = GUICtrlCreateInput("User", 10, 140, 100, 20, $ES_AUTOHSCROLL) GUICtrlSetFont(-1, 8, 400) $pass = GUICtrlCreateInput("Pass", 10, 165, 100, 20, BitOR($ES_PASSWORD,$ES_AUTOHSCROLL)) GUICtrlSetFont(-1, 8, 400) $start = GUICtrlCreateButton("Start", 10, 190, 100, 20, $BS_DEFPUSHBUTTON) GUISetState() While 1 $msg = GUIGetMsg() If $msg = $GUI_EVENT_CLOSE Then ExitLoop If $msg = $start Then ConnectWMI() If $hFlag = 1 Then If TimerDiff($timer) > $timeout Then UpdateGraph() EndIf WEnd Func ConnectWMI() Global $hostname = GUICtrlRead($host) If Ping($hostname, 2000) = 0 Then Msgbox(0, "Error", "Unable to reach specified host") Return 0 EndIf Local $usr = GUICtrlRead($user) Local $pwd = GUICtrlRead($pass) Global $objSWbemLocator = ObjCreate("WbemScripting.SWbemLocator") Global $objWMIService = $objSWbemLocator.ConnectServer($hostname, "root\cimv2", $usr, $pwd) If @error Then Msgbox(0, "Error", "Unable to connect to the Host with the supplied credentials") Return 0 EndIf $hFlag = 1 UpdateGraph() EndFunc Func UpdateGraph() $usage = _Processor_Usage() For $i = 1 to 19 $graph[$i] = $graph[$i+1] Next $graph[20] = $usage GUICtrlSetImage($bar1, "") CreateBar($bar1, $graph[1]) GUICtrlSetImage($bar2, "") CreateBar($bar2, $graph[2]) GUICtrlSetImage($bar3, "") CreateBar($bar3, $graph[3]) GUICtrlSetImage($bar4, "") CreateBar($bar4, $graph[4]) GUICtrlSetImage($bar5, "") CreateBar($bar5, $graph[5]) GUICtrlSetImage($bar6, "") CreateBar($bar6, $graph[6]) GUICtrlSetImage($bar7, "") CreateBar($bar7, $graph[7]) GUICtrlSetImage($bar8, "") CreateBar($bar8, $graph[8]) GUICtrlSetImage($bar9, "") CreateBar($bar9, $graph[9]) GUICtrlSetImage($bar10, "") CreateBar($bar10, $graph[10]) GUICtrlSetImage($bar11, "") CreateBar($bar11, $graph[11]) GUICtrlSetImage($bar12, "") CreateBar($bar12, $graph[12]) GUICtrlSetImage($bar13, "") CreateBar($bar13, $graph[13]) GUICtrlSetImage($bar14, "") CreateBar($bar14, $graph[14]) GUICtrlSetImage($bar15, "") CreateBar($bar15, $graph[15]) GUICtrlSetImage($bar16, "") CreateBar($bar16, $graph[16]) GUICtrlSetImage($bar17, "") CreateBar($bar17, $graph[17]) GUICtrlSetImage($bar18, "") CreateBar($bar18, $graph[18]) GUICtrlSetImage($bar19, "") CreateBar($bar19, $graph[19]) GUICtrlSetImage($bar20, "") CreateBar($bar20, $graph[20]) $timer = TimerInit() EndFunc Func _Processor_Usage() Dim $Col_Items = $objWMIService.ExecQuery('SELECT * FROM Win32_PerfFormattedData_PerfOS_Processor', 'WQL') Local $Obj_Item For $Obj_Item In $Col_Items Return $Obj_Item.PercentProcessorTime Next EndFunc Func CreateBar($target, $value) Local $width=5, $height=2 _GDIPlus_Startup() $hImage = DLL_BitmapCreate($width, $height*50) $hGraphic = _GDIPlus_ImageGetGraphicsContext($hImage) _GDIPlus_GraphicsSetSmoothingMode($hGraphic, 2) ;100 If $value > 98 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF00F2F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 0, $width, $height, $hBrush) EndIf ;98 If $value > 96 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF0182C") _GDIPlus_GraphicsFillRect($hGraphic, 0, 2, $width, $height, $hBrush) EndIf ;96 If $value > 94 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF0212A") _GDIPlus_GraphicsFillRect($hGraphic, 0, 4, $width, $height, $hBrush) EndIf ;94 If $value > 92 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF02B28") _GDIPlus_GraphicsFillRect($hGraphic, 0, 6, $width, $height, $hBrush) EndIf ;92 If $value > 90 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF03426") _GDIPlus_GraphicsFillRect($hGraphic, 0, 8, $width, $height, $hBrush) EndIf ;90 If $value > 88 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF03E24") _GDIPlus_GraphicsFillRect($hGraphic, 0, 10, $width, $height, $hBrush) EndIf ;88 If $value > 86 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF04722") _GDIPlus_GraphicsFillRect($hGraphic, 0, 12, $width, $height, $hBrush) EndIf ;86 If $value > 84 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF05120") _GDIPlus_GraphicsFillRect($hGraphic, 0, 14, $width, $height, $hBrush) EndIf ;84 If $value > 82 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF05A1D") _GDIPlus_GraphicsFillRect($hGraphic, 0, 16, $width, $height, $hBrush) EndIf ;82 If $value > 80 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF0641B") _GDIPlus_GraphicsFillRect($hGraphic, 0, 18, $width, $height, $hBrush) EndIf ;80 If $value > 78 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF06D19") _GDIPlus_GraphicsFillRect($hGraphic, 0, 20, $width, $height, $hBrush) EndIf ;78 If $value > 76 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF07717") _GDIPlus_GraphicsFillRect($hGraphic, 0, 22, $width, $height, $hBrush) EndIf ;76 If $value > 74 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF08015") _GDIPlus_GraphicsFillRect($hGraphic, 0, 24, $width, $height, $hBrush) EndIf ;74 If $value > 72 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF08A13") _GDIPlus_GraphicsFillRect($hGraphic, 0, 26, $width, $height, $hBrush) EndIf ;72 If $value > 70 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF09311") _GDIPlus_GraphicsFillRect($hGraphic, 0, 28, $width, $height, $hBrush) EndIf ;70 If $value > 68 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF09311") _GDIPlus_GraphicsFillRect($hGraphic, 0, 30, $width, $height, $hBrush) EndIf ;68 If $value > 66 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFF09D0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 32, $width, $height, $hBrush) EndIf ;66 If $value > 64 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFECA20F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 34, $width, $height, $hBrush) EndIf ;64 If $value > 62 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFE8A80F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 36, $width, $height, $hBrush) EndIf ;62 If $value > 60 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFE5AD0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 38, $width, $height, $hBrush) EndIf ;60 If $value > 58 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFE1B30F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 40, $width, $height, $hBrush) EndIf ;58 If $value > 56 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFDEB80F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 42, $width, $height, $hBrush) EndIf ;56 If $value > 54 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFDABE0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 44, $width, $height, $hBrush) EndIf ;54 If $value > 52 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFD6C30F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 46, $width, $height, $hBrush) EndIf ;52 If $value > 50 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFCFCE0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 48, $width, $height, $hBrush) EndIf ;50 If $value > 48 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFCCD40F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 50, $width, $height, $hBrush) EndIf ;48 If $value > 46 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFC8D90F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 52, $width, $height, $hBrush) EndIf ;46 If $value > 44 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFC4DF0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 54, $width, $height, $hBrush) EndIf ;44 If $value > 42 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFC1E40F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 56, $width, $height, $hBrush) EndIf ;42 If $value > 40 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFBDEA0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 58, $width, $height, $hBrush) EndIf ;40 If $value > 38 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFBAF00F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 60, $width, $height, $hBrush) EndIf ;38 If $value > 36 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFBAF00F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 62, $width, $height, $hBrush) EndIf ;36 If $value > 34 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFADEF0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 64, $width, $height, $hBrush) EndIf ;34 If $value > 32 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFFA1EE0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 66, $width, $height, $hBrush) EndIf ;32 If $value > 30 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF94ED0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 68, $width, $height, $hBrush) EndIf ;30 If $value > 28 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF88ED0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 70, $width, $height, $hBrush) EndIf ;28 If $value > 26 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF7CEC0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 72, $width, $height, $hBrush) EndIf ;26 If $value > 24 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF6FEB0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 74, $width, $height, $hBrush) EndIf ;24 If $value > 22 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF63EA0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 76, $width, $height, $hBrush) EndIf ;22 If $value > 20 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF56EA0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 78, $width, $height, $hBrush) EndIf ;20 If $value > 18 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF56EA0F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 80, $width, $height, $hBrush) EndIf ;18 If $value > 16 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF4AE90F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 82, $width, $height, $hBrush) EndIf ;16 If $value > 14 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF3EE80F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 84, $width, $height, $hBrush) EndIf ;14 If $value > 12 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF31E70F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 86, $width, $height, $hBrush) EndIf ;12 If $value > 10 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF25E70F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 88, $width, $height, $hBrush) EndIf ;10 If $value > 8 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF18E60F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 90, $width, $height, $hBrush) EndIf ;8 If $value > 6 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF0CE50F") _GDIPlus_GraphicsFillRect($hGraphic, 0, 92, $width, $height, $hBrush) EndIf ;6 If $value > 4 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF00E510") _GDIPlus_GraphicsFillRect($hGraphic, 0, 94, $width, $height, $hBrush) EndIf ;4 If $value > 2 Then $hBrush = _GDIPlus_BrushCreateSolid("0xFF00E509") _GDIPlus_GraphicsFillRect($hGraphic, 0, 96, $width, $height, $hBrush) EndIf ;2 $hBrush = _GDIPlus_BrushCreateSolid("0xFF00E509") _GDIPlus_GraphicsFillRect($hGraphic, 0, 98, $width, $height, $hBrush) $hBitmap = _GDIPlus_BitmapCreateHBITMAPFromBitmap($hImage) GUICtrlSendMsg($target, 0x172, 0, $hBitmap) _WinAPI_DeleteObject($hBitmap) _GDIPlus_BrushDispose($hBrush) _GDIPlus_GraphicsDispose($hGraphic) _GDIPlus_ImageDispose($hImage) _GDIPlus_Shutdown() EndFunc ;==>_CreateBar Func DLL_BitmapCreate($width, $height) Local $aResult = DllCall($__g_hGDIPDll, "uint", "GdipCreateBitmapFromScan0", "int", $width, "int", $height, "int", 0, "int", 0x0026200A, "ptr", 0, "int*", 0) Return $aResult[6] EndFunc ;==>DLL_BitmapCreate  
       
    • UEZ
      By UEZ
      AutoIt Windows Screenshooter
      Key Features:
      takes easily a screenshot from any visible window capture any region of the desktop incl. freehand capturing capture GUI controls and GUI menus separately capture a marked area every x seconds for a duration of y seconds create a GIF animation from saved frames (Vista or higher os required) capture to AVI file (without audio!) takes a screenshot from web sites (available only on Win7+ os and when Aero is enabled) put images to clipboard to paste to other applications easily color picker save image in different formats and also to PDF! add timestamp to saved images simple image editing options: greyscale, b&w, invert, rotate +-90° send image to printer and default email client preview of captured screens incl. zoom option multi monitor support display pixel color under mouse ruler basic image editor (paint, highlight, ellipse, rectangle, text and some graphic FX) watermark captured image no 3rd party tools or DLLs used - pure AutoIt! fully portable - no installation is needed multi language feature (Eng, Ger, Tur, Fra and Rus only) To do:
      capture content of scrollable window/control capture cascaded menus Due to DllCall("User32.dll", "int", "PrintWindow", "hwnd", $hWnd, "handle", $hMemDC, "int", 0) limitation some windows cannot be captured properly (GDI+, ProgDVB, etc.) but can take screenshots of hidden windows. One workaround is to use full screen capturing (F11/F12) or "Grab Screen" function! Or try double click with rmb on listview items (beta).
      Download source code (6295 downloads previously):  AutoIt Windows Screenshooter v1.81 Build 2018-08-12.7z (version 3.3.12.0+ needed!)
      You are not allowed to sell this code or just parts of it in a commercial project or modify it and distribute it with a different name!
      Download compiled Exe only: 4shared / Media Fire / Softpedia (1.54mb)
      Distributing copies of the program in compiled format (exe) must be free of any fee!
      -----> click here to Donate!  
       
      (Current donators: 1. Cuong N.) 
      It is designed for Win7+ operating systems with AERO enabled! E.g. on WinXP machines some functions are not working properly and might crash the application!
      AV scanners may have a negative impact the execution of compiled exe and might report any malware. I guarantee that there is no malicious code in the source code / exe!!! 
      Main GUI:

       
       
      About Intro:

       
       
      Basic Image Editor:

       
       
      Watermark:

       
       
      Click link for an enhanced version of Watermark Image.
      Credits:
      main code by UEZ additional code (alphabetical order) by Authenticity, AutoItObject Team, Eemuli, Eukalyptus, funkey, _Kurt, martin, monoceres, ProgAndy, taietel, trancexx, Ward, wolf9228 and Yashied! mesale0077 for turkish translation wakillon for french translation AZJIO for russian translation Keys:
      Main GUI:
      User your mouse to scroll preview window or
      Numpad 8: Scroll preview window up
      Numpad 2: Scroll preview window down
      Numpad 4: Scroll preview window left
      Numpad 6: Scroll preview window right
      Numpad +: zoom in preview window or mousewheel down
      Numpad -: zoom out preview window or mousewheel up
      F1: capture again on last position
      F5: refresh Windows Name list
      PRINTSCREEN: take screenshot from whole screen
      ALT+PRINTSCR: take a screenshot from active window
      F10: Undo made changes with Image Editing function
      F11: take screenshot from whole screen incl mouse cursor
      F12: take screenshot from whole screen
      Ctrl+Alt+F9 start "Grab Screen" mode
      Ctrl+Alt+F12: take a screenshot from active window using alternative screenshot functionality (beta)!
      Ctrl+r: call ruler
      Ctrl+s: save current displayed image
      Ctrl+x: exit program
      ctrl+w: call web grab input field (availabe only when Aero is enabled)
      Ctrl+i: call image editor
      Ctrl+m: call watermark editor
      Ctrl+z: undo
      Only available on Vista+ os: double click with rmb on list items to use alternative screenshot functionality (beta)!
      When 'Grab Screen' is clicked you can hold down the ctrl key to switch to 'grab controls' mode. Control under mouse will be framed red.
      ctrl + shift will take the screenshot of appropriate control. To capture GUI menues you can press rmb which simulates the lmb. When a menu is opened press shift additionaly to capture it.
      Press and hold only the shift key to capture any region on the desktop using freehand capturing - release it so capture marked regions!
      Or just mark resizeable area which you want to grab. Press CTRL key to grab marked area or right mouse button to capture the marked area every x seconds for a duration of y seconds.
      When saving the image just enter the extension you whish to use (*.jpg;*.png;*.bmp;*.gif;*.tif;*.pdf). Big thanks to taietel for his PDF UDF!
      Image Editor:
      s: save
      c: copy
      n: send
      h: highlighter
      p: pen
      r: rectangle
      e: ellipse
      a: arrow
      o: color
      t: text
      g: text config
      Ctrl+z: undo
      Watermark editor:
      Ctrl+z: undo
       
      To start the app minimized just call it "Windows Screenshooter.exe /min"
      Maybe it is useful for someone...
      Any kind of comment is welcome.
      Br,
      UEZ
      Change log:
       
    • c.haslam
      By c.haslam
      I think that _GDIPlus_ImageGetPropertyItem should return a Property Item that can readily be set as a property of another image. Why would one want to do this? A script might (as one of mine does) edit an image of a .jpg file then write the result to a .jpg file. In editing it, in my case, the number of horizontal and vertical pixels change, and the date/time edited should be set as a property. All other property items remain the same. Other GDI+ users may change other properties.
      So an approach is to copy all the property items from image1 to image2, then update a few properties.
      M$ provides a Property Item class (id, length, pointer to an array of values) but _GDIPlus_ImageGetPropertyItem returns something different.
      I think that, wherever reasonable, UDFs that are wrappers for M$ methods should work like M$'s methods. _GDIPlus_ImageGetPropertyItem does not do this:
      While M$ returns 2 values for a value that is a ratio of 2 numbers,  _GDIPlus_ImageGetPropertyItem returns numerator/denominator as a single value (often a Double). _GDIPlus_ImageSetPropertyItem (when included in GDIPlus.au3) will be unable to set ratio property items properly because it cannot know what the numerator and denominator are. So copying such property items will not work properly. M$ has a Void* buffer where the buffer is an array of values but _GDIPlus_ImageGetPropertyItem() returns the values in the same 1-d array as id, length and type. M$'s approach produces a 1-d array with the same number of elements for all property items while _GDIPlus_ImageGetPropertyItem produces a 1-d array with various numbers of elements. To me, this is not good programming practice. For a photo from a Sony camera, the worst case has 1-d array with 67 elements. When combined into a 2-d array with the property items of all properties, there are 66 rows and 67 columns, with many elements not used. So I suggest that _GDIPlus_ImageGetPropertyItem look like this:
      ; #FUNCTION# ==================================================================================================================== ; Name ..........: cGDIPlus_ImageGetPropertyItem ; Description ...: Gets a specified property item (piece of meta data) from an Image object ; Syntax ........: cGDIPlus_ImageGetPropertyItem($hImage, $iPropID) ; Parameters ....: $hImage - Pointer to an image object ; $iPropID - Identifier of the property item to be retrieved ; Return values .: Success: Array containing the values of the property item ; [0] - identifier ; [1] - size, in bytes, of the value array ; [2] - type of value(s) in the value array ; [3] - value array ; Failure: Sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPID_ERR*). ; Author ........: Eukalyptus ; Modified ......: c.haslam ; Remarks .......: types: unsigned byte = 1, ASCII string = 2, unsigned short = 3, unsigned long = 4, ; unsinged rational = 5, undefined = 7, signed long = 9, signed rational = 10 ; Related .......: _GDIPlus_ImageGetPropertyIdList ; Link ..........: https://msdn.microsoft.com/en-us/library/windows/desktop/ms535390(v=vs.85).aspx, ; https://msdn.microsoft.com/en-us/library/windows/desktop/ms534493(v=vs.85).aspx, ; https://msdn.microsoft.com/en-us/library/windows/desktop/ms534414(v=vs.85).aspx ; Example .......: Yes ; =============================================================================================================================== Func cGDIPlus_ImageGetPropertyItem($hImage, $iPropID) Local $iSize = __GDIPlus_ImageGetPropertyItemSize($hImage, $iPropID) If @error Then Return SetError(@error, @extended, -1) Local $tBuffer = DllStructCreate("byte[" & $iSize & "];") Local $pBuffer = DllStructGetPtr($tBuffer) Local $aResult = DllCall($__g_hGDIPDll, "int", "GdipGetPropertyItem", "handle", $hImage, "uint", _ $iPropID, "uint", $iSize, "struct*", $tBuffer) If @error Then Return SetError(@error, @extended, -1) If $aResult[0] Then Return SetError(10, $aResult[0], False) Local $tPropertyItem = DllStructCreate("int id; int length; short type; ptr pvalue;", $pBuffer) Local $iBytes = DllStructGetData($tPropertyItem, "length") Local $pValue = DllStructGetData($tPropertyItem, "pvalue") Local $aRet[4] Local $type = DllStructGetData($tPropertyItem,'type') Local $tValues, $iValues Switch $type Case 2 ;ASCII String $iValues = 1 $tValues = DllStructCreate("char[" & $iBytes & "];", $pValue) Case 3 ;Array of UShort $iValues = Int($iBytes / 2) $tValues = DllStructCreate("ushort[" & $iValues & "];", $pValue) Case 4, 5 ;Array of UInt / Fraction $iValues = Int($iBytes / 4) $tValues = DllStructCreate("uint[" & $iValues & "];", $pValue) Case 9, 10 ;Array of Int / Fraction $iValues = Int($iBytes / 4) $tValues = DllStructCreate("int[" & $iValues & "];", $pValue) Case Else ;Array of Bytes $iValues = 1 $tValues = DllStructCreate("byte[" & $iBytes & "];", $pValue) EndSwitch $aRet[0] = DllStructGetData($tPropertyItem,'id') $aRet[1] = $iBytes $aRet[2] = $type Local $aVals[$iValues] If $type=2 Or $type=7 Then ; ASCII string or undefined $aVals[0] = DllStructGetData($tValues,1) Else For $i = 0 To $iValues-1 $aVals[$i] = DllStructGetData($tValues,1,$i+1) Next EndIf $aRet[3] = $aVals Return $aRet EndFunc And here is an example:
      #include <GDIPlus.au3> #include <Array.au3> Example() Func Example() _GDIPlus_Startup() Local $hImage = _GDIPlus_ImageLoadFromFile(RegRead((@AutoItX64 = True ? "HKLM\SOFTWARE\Wow6432Node\AutoIt v3\AutoIt" : "HKLM\SOFTWARE\AutoIt v3\AutoIt"), "InstallDir") & "\Examples\GUI\Torus.png") If @error Then _GDIPlus_Shutdown() MsgBox(16, "", "An error has occured - unable to load image!", 30) Return False EndIf Local $ar = _GDIPlus_ImageGetPropertyIdList($hImage) Local $vPropNbrs[UBound($ar,1)-1] ; Extract ID numbers For $i = 1 To UBound($ar,1)-1 $vPropNbrs[$i-1] = $ar[$i][0] Next ; Get all property items Local $aPropItems[UBound($vPropNbrs)][4],$vPropItem For $i = 0 To UBound($vPropNbrs)-1 $vPropItem = cGDIPlus_ImageGetPropertyItem($hImage,$vPropNbrs[$i]) For $j = 0 To 3 $aPropItems[$i][$j] = $vPropItem[$j] Next Next ; Collapse values arrays so _ArrayDisplay can display them Local $ar = $aPropItems For $i = 0 To UBound($aPropItems,1)-1 $ar[$i][0] = '0x'&Hex($ar[$i][0],4) $ar[$i][3] = '' For $j = 0 To UBound($aPropItems[$i][3])-1 $ar[$i][3] &= ($aPropItems[$i][3])[$j]&'|' Next $ar[$i][3] = StringTrimRight($ar[$i][3],1) Next _ArrayDisplay($ar) _GDIPlus_Shutdown() EndFunc Unfortunately this example (based on one now in the Help) does not exercise most of the item types, but I do not know of a file with EXIF metadata that is on most PCs. I have tested this code by updating and adding property items to torus.jpg and to a photo taken by a Sony camera. The code for implementing and calling _GDIPlus_ImageSetPropertyItem will be fairly simple [see below].
       
      Your thoughts?
       
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