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tarretarretarre

_GDIPlus_GraphicsDrawImage set new position or delete?

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tarretarretarre

Im new to GDIPLUS and im trying to set another position to my _GDIPlus_GraphicsDrawImage which is created from a file. Also i cant find a way to just remove the picture just the whole Gui which setts another background and removes my other pictures

Thanks

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UEZ

If your are moving your bitmap you have to clear the current GDI+ graphic handle usually. I assume in you case with another background image you have to set your background image again and move the foreground image to the new possition.

There is no other way to do it if you working directly on the graphic handle. Other possibility is to create a child gui which is moving over the background.

Br,

UEZ

Edited by UEZ
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IgImAx

Hi UEZ

Other possibility is to create a child gui which is moving over the background.

Your first way works for me too! Thanks. But I loke to learn about second way too! to learn how can I create a child GUI and ... can you give me a sample code?

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UEZ

Here one way to do it:

#include <WindowsConstants.au3>
#include <GUIConstantsEx.au3>
#include <GDIPlus.au3>

Opt("GUICoordMode", 1)

_GDIPlus_Startup()
Global Const $hBgImage = _GDIPlus_ImageLoadFromFile(StringReplace(@AutoItExe, "autoit3.exe", "Examples\GUI\msoobe.jpg"))
Global Const $iW = _GDIPlus_ImageGetWidth($hBgImage)
Global Const $iH = _GDIPlus_ImageGetHeight($hBgImage)

Global Const $hGUI = GUICreate("GDI+ Test", $iW, $iH)
Global Const $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGUI)
Global Const $hBitmap = _GDIPlus_BitmapCreateFromGraphics($iW, $iH, $hGraphic)
Global Const $hContext = _GDIPlus_ImageGetGraphicsContext($hBitmap)

Global Const $hFgImage = _GDIPlus_ImageLoadFromFile(StringReplace(@AutoItExe, "autoit3.exe", "Examples\GUI\Torus.png"))
Global Const $iW_Fg = _GDIPlus_ImageGetWidth($hFgImage), $iH_Fg = _GDIPlus_ImageGetHeight($hFgImage)
Global $iPosX = 0, $iPosY = 0
Global Const $hGUI_Child = GUICreate("",$iW_Fg , $iH_Fg, $iPosX, $iPosY, $WS_POPUP, $WS_EX_MDICHILD + $WS_EX_LAYERED + $WS_EX_TRANSPARENT, $hGUI)
Global Const $hGraphic_Child = _GDIPlus_GraphicsCreateFromHWND($hGUI_Child)
GUISetState(@SW_SHOW, $hGUI)
GUISetState(@SW_SHOW, $hGUI_Child)

Global Const $iYCaption = _WinAPI_GetSystemMetrics(4)
Global Const $iYFixedFrame = _WinAPI_GetSystemMetrics(8)
Global Const $iXFixedFrame = _WinAPI_GetSystemMetrics(7)

_GDIPlus_GraphicsDrawImage($hContext, $hBgImage, 0, 0)
_GDIPlus_GraphicsDrawImage($hGraphic, $hBitmap, 0, 0)

SetTransparentBitmap($hGUI_Child, $hFgImage)

Global $fVectorX = Random(1, 3)
Global $fVectorY = Random(1, 3)

AdlibRegister("MoveGUI", 20)

Do
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            AdlibUnRegister("MoveGUI")
            _GDIPlus_ImageDispose($hBgImage)
            _GDIPlus_ImageDispose($hFgImage)
            _GDIPlus_BitmapDispose($hBitmap)
            _GDIPlus_GraphicsDispose($hContext)
            _GDIPlus_GraphicsDispose($hGraphic_Child)
            _GDIPlus_GraphicsDispose($hGraphic)
            GUIDelete($hGUI_Child)
            GUIDelete($hGUI)
            _GDIPlus_Shutdown()
        Exit
    EndSwitch
Until False

Func MoveGUI()
    Local $aPos = WinGetPos ($hGUI)
    $iPosX += $fVectorX
    $iPosY += $fVectorY
    WinMove($hGUI_Child, "", $aPos[0] + $iPosX + $iXFixedFrame, $aPos[1] + $iPosY + $iYCaption + $iYFixedFrame)
    If $iPosX < 0 Or ($iPosX + $iW_Fg) > $iW Then $fVectorX *= -1
    If $iPosY < 0 Or ($iPosY + $iH_Fg) > $iH Then $fVectorY *= -1
EndFunc

Func SetTransparentBitmap($hGUI, $hImage, $iOpacity = 0xFF)
    Local $hScrDC, $hMemDC, $hBitmap, $hOld, $pSize, $tSize, $pSource, $tSource, $pBlend, $tBlend
    $hScrDC = _WinAPI_GetDC(0)
    $hMemDC = _WinAPI_CreateCompatibleDC($hScrDC)
    $hBitmap = _GDIPlus_BitmapCreateHBITMAPFromBitmap($hImage)
    $hOld = _WinAPI_SelectObject($hMemDC, $hBitmap)
    $tSize = DllStructCreate($tagSIZE)
    $pSize = DllStructGetPtr($tSize)
    DllStructSetData($tSize, "X", _GDIPlus_ImageGetWidth($hImage))
    DllStructSetData($tSize, "Y", _GDIPlus_ImageGetHeight($hImage))
    $tSource = DllStructCreate($tagPOINT)
    $pSource = DllStructGetPtr($tSource)
    $tBlend = DllStructCreate($tagBLENDFUNCTION)
    $pBlend = DllStructGetPtr($tBlend)
    DllStructSetData($tBlend, "Alpha", $iOpacity)
    DllStructSetData($tBlend, "Format", 1)
    _WinAPI_UpdateLayeredWindow($hGUI,  $hMemDC, 0, $pSize, $hMemDC, $pSource, 0, $pBlend, $ULW_ALPHA)
    _WinAPI_ReleaseDC(0, $hScrDC)
    _WinAPI_SelectObject($hMemDC, $hOld)
    _WinAPI_DeleteObject($hBitmap)
    _WinAPI_DeleteDC($hMemDC)
EndFunc   ;==>SetTransparentBitmap

Br,

UEZ

  • Like 1

Please don't send me any personal message and ask for support! I will not reply!

Selection of finest graphical examples at Codepen.io

The own fart smells best!
Her 'sikim hıyar' diyene bir avuç tuz alıp koşma!
¯\_(ツ)_/¯  ٩(●̮̮̃•̃)۶ ٩(-̮̮̃-̃)۶ૐ

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IgImAx

Hi UEZ

WooooooooooW!!!! That's wonderful!!? I did not expect that Autoit can do this!?!?! Thanks! WoooW!!!


Teach Others to learn more yourself

My eBooks and Articles in Persian: IgImAx Home! * and more here

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