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Greek

How do i delete GDI+ Arc?

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Hi

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

HotKeySet ( "{ESC}", "_ende" )

_GDIPlus_Startup()

$hGui = GUICreate("Rahmen", @DesktopWidth, @DesktopHeight, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
_WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255)
GUICtrlCreateLabel( "", 0, 0, @DesktopWidth, @DesktopHeight )
GUICtrlSetBkColor(-1, 0xABCDEF)
GUISetState()

$hGraphic = _GDIPlus_GraphicsCreateFromHWND ($hGui)
$Pinsel=_GDIPlus_PenCreate ( 0xFF0000FF, 20 )

_GDIPlus_GraphicsDrawArc ( $hGraphic, @DesktopWidth/2, @DesktopHeight/2, 70, 70, 180, 360, $Pinsel )

While 1
WEnd


Func _ende()
    _GDIPlus_Shutdown()
    Exit
EndFunc

Func _WinAPI_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $dwFlages = 0x03, $isColorRef = False)
    ; progandy
    If $dwFlages = Default Or $dwFlages = "" Or $dwFlages < 0 Then $dwFlages = 0x03
    If Not $isColorRef Then
        $i_transcolor = Hex(String($i_transcolor), 6)
        $i_transcolor = Execute('0x00' & StringMid($i_transcolor, 5, 2) & StringMid($i_transcolor, 3, 2) & StringMid($i_transcolor, 1, 2))
    EndIf
    Local $Ret = DllCall("user32.dll", "int", "SetLayeredWindowAttributes", "hwnd", $hwnd, "long", $i_transcolor, "byte", $Transparency, "long", $dwFlages)
    Select
        Case @error
            Return SetError(@error, 0, 0)
        Case $Ret[0] = 0
            Return SetError(4, _WinAPI_GetLastError(), 0)
        Case Else
            Return 1
    EndSelect
EndFunc   ;==>_WinAPI_SetLayeredWindowAttributes

How can i delete

_GDIPlus_GraphicsDrawArc ( $hGraphic, @DesktopWidth/2, @DesktopHeight/2, 70, 70, 180, 360, $Pinsel )

?

thx,

Greek

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_GDIPlus_GraphicsDispose ($hGraphic)



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You don't really "delete" per se, but instead you just redraw excluding that specific element.

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_GDIPlus_GraphicsDispose ($hGraphic)

Doesn't work, the arc is still there

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

HotKeySet ( "{ESC}", "_ende" )

_GDIPlus_Startup()

$hGui = GUICreate("Rahmen", @DesktopWidth, @DesktopHeight, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
_WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255)
GUICtrlCreateLabel( "", 0, 0, @DesktopWidth, @DesktopHeight )
GUICtrlSetBkColor(-1, 0xABCDEF)
GUISetState()

$hGraphic = _GDIPlus_GraphicsCreateFromHWND ($hGui)
$Pinsel=_GDIPlus_PenCreate ( 0xFF0000FF, 20 )

_GDIPlus_GraphicsDrawArc ( $hGraphic, @DesktopWidth/2, @DesktopHeight/2, 70, 70, 180, 360, $Pinsel )

MsgBox ( 0, "", "..." )

_GDIPlus_GraphicsDispose ($hGraphic)

While 1
WEnd


Func _ende()
    _GDIPlus_Shutdown()
    Exit
EndFunc

Func _WinAPI_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $dwFlages = 0x03, $isColorRef = False)
    ; progandy
    If $dwFlages = Default Or $dwFlages = "" Or $dwFlages < 0 Then $dwFlages = 0x03
    If Not $isColorRef Then
        $i_transcolor = Hex(String($i_transcolor), 6)
        $i_transcolor = Execute('0x00' & StringMid($i_transcolor, 5, 2) & StringMid($i_transcolor, 3, 2) & StringMid($i_transcolor, 1, 2))
    EndIf
    Local $Ret = DllCall("user32.dll", "int", "SetLayeredWindowAttributes", "hwnd", $hwnd, "long", $i_transcolor, "byte", $Transparency, "long", $dwFlages)
    Select
        Case @error
            Return SetError(@error, 0, 0)
        Case $Ret[0] = 0
            Return SetError(4, _WinAPI_GetLastError(), 0)
        Case Else
            Return 1
    EndSelect
EndFunc   ;==>_WinAPI_SetLayeredWindowAttributes

Shellexecute (@MyDocumentsDir & "\Eigene Musik\musik.m3u")
ShellExecute ( "musik.m3u", "", @MyDocumentsDir & "\Eigene Musik" )

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You don't really "delete" per se, but instead you just redraw excluding that specific element.

I don't understand... can you make an example?

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I don't understand... can you make an example?

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

HotKeySet("{ESC}", "_ende")

_GDIPlus_Startup()

Global $hGui = GUICreate("Rahmen", @DesktopWidth, @DesktopHeight, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
_WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255)
GUICtrlCreateLabel("", 0, 0, @DesktopWidth, @DesktopHeight)
GUICtrlSetBkColor(-1, 0xABCDEF)
GUISetState()
$seg = 0
Global $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGui)
$Pinsel = _GDIPlus_PenCreate(0xFF0000FF, 20)
Global $vanish = _GDIPlus_PenCreate(0xFFfffffF, 20)
;_GDIPlus_GraphicsDrawArc ( $hGraphic, @DesktopWidth/2, @DesktopHeight/2, 70, 70, 180, 360, $Pinsel )
$t1 = _Timer_SetTimer(0, 300, "remove")
MsgBox ( 0, "", "..." )


_Timer_KillTimer(0, $t1)
While 1
    Sleep(40)
WEnd
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_BrushDispose($Pinsel)
_GDIPlus_BrushDispose($vanish)

Func _ende()
    _GDIPlus_Shutdown()
    Exit
EndFunc  ;==>_ende

Func remove($a, $b, $c, $d)
    _GDIPlus_GraphicsDrawArc($hGraphic, @DesktopWidth / 2, @DesktopHeight / 2, 70, 70, $seg * 30, 30, $vanish)
    $seg += 1
    _GDIPlus_GraphicsDrawArc($hGraphic, @DesktopWidth / 2, @DesktopHeight / 2, 70, 70, $seg * 30, 30, $Pinsel)

EndFunc  ;==>remove



Func _WinAPI_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $dwFlages = 0x03, $isColorRef = False)
   ; progandy
    If $dwFlages = Default Or $dwFlages = "" Or $dwFlages < 0 Then $dwFlages = 0x03
    If Not $isColorRef Then
        $i_transcolor = Hex(String($i_transcolor), 6)
        $i_transcolor = Execute('0x00' & StringMid($i_transcolor, 5, 2) & StringMid($i_transcolor, 3, 2) & StringMid($i_transcolor, 1, 2))
    EndIf
    Local $Ret = DllCall("user32.dll", "int", "SetLayeredWindowAttributes", "hwnd", $hwnd, "long", $i_transcolor, "byte", $Transparency, "long", $dwFlages)
    Select
        Case @error
            Return SetError(@error, 0, 0)
        Case $Ret[0] = 0
            Return SetError(4, _WinAPI_GetLastError(), 0)
        Case Else
            Return 1
    EndSelect
EndFunc  ;==>_WinAPI_SetLayeredWindowAttributes

;Shellexecute (@MyDocumentsDir & "\Eigene Musik\musik.m3u")
;ShellExecute ( "musik.m3u", "", @MyDocumentsDir & "\Eigene Musik" )

Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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#7 ·  Posted (edited)

Wow nice, but could you tell why this doesn't work?

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

HotKeySet("{ESC}", "_ende")

Global $ballpos1=@DesktopWidth/2
Global $ballpos2=@DesktopHeight/2
Global $BewegungSenkrecht=Random(5, 7, 1)
Global $BewegungWagrecht=Random(5, 7, 1)
Global $Speed=10

_GDIPlus_Startup()

Global $hGui = GUICreate("Rahmen", @DesktopWidth, @DesktopHeight, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
GUISetBkColor(0xABCDEF)
_WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255)
GUISetState()
Global $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGui)
$Pinsel = _GDIPlus_PenCreate(0xFF0000FF, 20)
Global $vanish = _GDIPlus_PenCreate(0xFFfffffF, 20)
;_GDIPlus_GraphicsDrawArc ( $hGraphic, @DesktopWidth/2, @DesktopHeight/2, 70, 70, 180, 360, $Pinsel )
$t1 = _Timer_SetTimer(0, 300, "move")

While 1
    Sleep(40)
WEnd
_GDIPlus_GraphicsDispose($hGraphic)
_GDIPlus_BrushDispose($Pinsel)
_GDIPlus_BrushDispose($vanish)

Func _ende()
    _GDIPlus_Shutdown()
    Exit
EndFunc  ;==>_ende

Func move($a, $b, $c, $d)
    _GDIPlus_GraphicsDrawArc ( $hGraphic, $ballpos1, $ballpos2, 70, 70, 180, 360, $vanish )
    $ballpos1+=$BewegungWagrecht * $Speed
    $ballpos2+=$BewegungSenkrecht * $Speed
    _GDIPlus_GraphicsDrawArc ( $hGraphic, $ballpos1, $ballpos2, 70, 70, 180, 360, $Pinsel )
    If $ballpos1 >= @DesktopWidth - 80 And $BewegungWagrecht > 0 Then $BewegungWagrecht = Random(-7, -5, 1)
    If $ballpos1 < 10 And $BewegungWagrecht < 0 Then $BewegungWagrecht = Random(5, 7, 1)
    If $ballpos2 >= @DesktopHeight - 95 And $BewegungSenkrecht > 0 Then $BewegungSenkrecht = Random(-7, -5, 1)
    If $ballpos2 < 30 And $BewegungSenkrecht < 0 Then $BewegungSenkrecht = Random(5, 7, 1)
EndFunc  ;==>move



Func _WinAPI_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $dwFlages = 0x03, $isColorRef = False)
   ; progandy
    If $dwFlages = Default Or $dwFlages = "" Or $dwFlages < 0 Then $dwFlages = 0x03
    If Not $isColorRef Then
        $i_transcolor = Hex(String($i_transcolor), 6)
        $i_transcolor = Execute('0x00' & StringMid($i_transcolor, 5, 2) & StringMid($i_transcolor, 3, 2) & StringMid($i_transcolor, 1, 2))
    EndIf
    Local $Ret = DllCall("user32.dll", "int", "SetLayeredWindowAttributes", "hwnd", $hwnd, "long", $i_transcolor, "byte", $Transparency, "long", $dwFlages)
    Select
        Case @error
            Return SetError(@error, 0, 0)
        Case $Ret[0] = 0
            Return SetError(4, _WinAPI_GetLastError(), 0)
        Case Else
            Return 1
    EndSelect
EndFunc  ;==>_WinAPI_SetLayeredWindowAttributes

Edit:

lol, no your Script doesn't work too :P don't understand this...

Edited by Greek

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I'm afraid I don't know. :P

Transparent layered windows don't behave as I thought and drawing with GDIPlus in the transparent colour doesn't produce a transparent effect but simply draws the 'transparent' colour. It needs someone with a better understanding than I have at the moment.

If the ring is the only thing you want to show then it would be easier to have a small window which is trasparent just big enough to hold the ring and then move the wondow around rather than redraw the ring.


Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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Greek

Because your GUI is desktop size, every time the blue arc is replaced with a white arc, the white arc remains on the GUI.

Replace

_GDIPlus_GraphicsDrawArc ( $hGraphic, $ballpos1, $ballpos2, 70, 70, 180, 360, $vanish )

with

_WinAPI_RedrawWindow($hGui)

here

Func move($a, $b, $c, $d)

_WinAPI_RedrawWindow($hGui)

$ballpos1+=$BewegungWagrecht * $Speed

This removes the white arcs.

Here is another way of doing it.

Originally this example was to show the removal of the existing graphics by pressing Ctrl button - still works.

The graphics is on a layered GUI with a size slightly larger than the graphics to be displayed.

It is the transparent GUI which is moving across the desktop.

The _WinMove() function is not necessary. It is difficult to click on the graphical part of the GUI to actually move it.

#include <GDIPlus.au3>
#include <GuiConstantsEx.au3>
#include <Misc.au3>
#include <WindowsConstants.au3>
#include <timers.au3>

Global Const $iOpacity = 255
;Global Const $ULW_ALPHA         = 2
Global $hGui, $hGraphic, $blueBrush, $hImage2, $iPath
Global $dll = DllOpen("user32.dll")
Global $GuiSize = 100, $hWnd, $hDC, $pSize, $tSize, $pSource, $tSource, $pBlend, $tBlend
Global Const $WM_LBUTTONDOWN = 0x0201; Drag Window 1 of 3 addin
Global $t1
Global $ballpos1 = @DesktopWidth / 2
Global $ballpos2 = @DesktopHeight / 2
Global $BewegungSenkrecht = Random(5, 7, 1)
Global $BewegungWagrecht = Random(5, 7, 1)
Global $Speed = 10

Opt("MustDeclareVars", 1)
Opt("GUIOnEventMode", 1)

Main()

Func Main()
    Local $hBitmap, $Pinsel, $flg = True
    $hGui = GUICreate("L1", $GuiSize, $GuiSize, -1, -1, 0, BitOR($WS_EX_LAYERED, $WS_EX_TOPMOST))
    GUIRegisterMsg($WM_LBUTTONDOWN, "_WinMove"); Drag Window 2 of 3 addin
    GUISetState()

    _GDIPlus_Startup()
    $hWnd = _WinAPI_GetDC(0)
    $hDC = _WinAPI_CreateCompatibleDC($hWnd)
    $hBitmap = _WinAPI_CreateCompatibleBitmap($hWnd, $GuiSize, $GuiSize); $iWidth, $iHeight)
    _WinAPI_SelectObject($hDC, $hBitmap)
    $hGraphic = _GDIPlus_GraphicsCreateFromHDC($hDC)
;$iPath =  "C:\file.png"
;$hImage2 = _GDIPlus_ImageLoadFromFile($iPath)
    $Pinsel = _GDIPlus_PenCreate(0xFF0000FF, 20)
    _GDIPlus_GraphicsDrawArc($hGraphic, 10, 10, $GuiSize - 20, $GuiSize - 20, 180, 360, $Pinsel)
    $tSize = DllStructCreate($tagSIZE)
    $pSize = DllStructGetPtr($tSize)
    DllStructSetData($tSize, "X", $GuiSize);$iWidth )
    DllStructSetData($tSize, "Y", $GuiSize);$iHeight)
    $tSource = DllStructCreate($tagPOINT)
    $pSource = DllStructGetPtr($tSource)
    $tBlend = DllStructCreate($tagBLENDFUNCTION)
    $pBlend = DllStructGetPtr($tBlend)
    DllStructSetData($tBlend, "Alpha", $iOpacity)
    DllStructSetData($tBlend, "Format", 1)
    _WinAPI_UpdateLayeredWindow($hGui, $hWnd, 0, $pSize, $hDC, $pSource, 0, $pBlend, $ULW_ALPHA)
    $t1 = _Timer_SetTimer(0, 300, "move")
    Do
        If _IsPressed("11") Then; CTRL key
            Do
                Sleep(10)
            Until Not _IsPressed("11")
            If $flg Then
                _GDIPlus_GraphicsClear($hGraphic)
                _GDIPlus_GraphicsDrawArc($hGraphic, 10, 10, $GuiSize - 20, $GuiSize - 20, 180, 180, $Pinsel)
                _WinAPI_UpdateLayeredWindow($hGui, $hWnd, 0, $pSize, $hDC, $pSource, 0, $pBlend, $ULW_ALPHA)
            Else
                _GDIPlus_GraphicsClear($hGraphic)
                _GDIPlus_GraphicsDrawArc($hGraphic, 10, 10, $GuiSize - 20, $GuiSize - 20, 180, 360, $Pinsel)
                _WinAPI_UpdateLayeredWindow($hGui, $hWnd, 0, $pSize, $hDC, $pSource, 0, $pBlend, $ULW_ALPHA)
            EndIf
            $flg = Not $flg
        EndIf
        Sleep(10)
    Until _IsPressed("1B"); ESC key
    DllClose($dll)
    _GDIPlus_GraphicsDispose($hGraphic)
    _WinAPI_ReleaseDC(0, $hWnd)
    _WinAPI_DeleteObject($hBitmap)
    _WinAPI_DeleteDC($hDC)
    _GDIPlus_Shutdown()
EndFunc  ;==>Main

Func move($a, $b, $c, $d)
    $ballpos1 += $BewegungWagrecht * $Speed
    $ballpos2 += $BewegungSenkrecht * $Speed
    WinMove($hGui, "", $ballpos1, $ballpos2)
    If $ballpos1 >= @DesktopWidth - $GuiSize And $BewegungWagrecht > 0 Then $BewegungWagrecht = Random(-7, -5, 1)
    If $ballpos1 < 10 And $BewegungWagrecht < 0 Then $BewegungWagrecht = Random(5, 7, 1)
    If $ballpos2 >= @DesktopHeight - 95 And $BewegungSenkrecht > 0 Then $BewegungSenkrecht = Random(-7, -5, 1)
    If $ballpos2 < 30 And $BewegungSenkrecht < 0 Then $BewegungSenkrecht = Random(5, 7, 1)
EndFunc  ;==>move

; =================================================================
; Drag Window 3 of 3 addin
; =================================================================
Func _WinMove($hWnd, $Command, $wParam, $lParam)
    If BitAND(WinGetState($hWnd), 32) Then Return $GUI_RUNDEFMSG
;DllCall("user32.dll", "long", "SendMessage", "hwnd", $HWnd, "int", $WM_SYSCOMMAND, "int", 0xF009, "int", 0)
    DllCall("user32.dll", "int", "SendMessage", "hWnd", $hWnd, "int", $WM_NCLBUTTONDOWN, "int", $HTCAPTION, "int", 0)
EndFunc  ;==>_WinMove

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hm ok, hard to find a good solution for this :S

thx,

Greek

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@Malkey Can you tell me what a 'handle to the update region' is for the third parameter of the RedrawWindow function?

I don't understand why the colour doesn't appear as transparent for the layered window. If I draw a rectangle filled with green say, and then draw a line through it with the transparent colour then the line is transparent as I expected, but when I draw the circle in the transoarent colour over the old circle it shows as the colour and not transparent. The size of the window doesn't affect this. If you can explain I would be grateful.


Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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#12 ·  Posted (edited)

A i have another question:

This code works fine:

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

HotKeySet("{ESC}", "_ende")

Global $ballpos1=@DesktopWidth/2
Global $ballpos2=@DesktopHeight/2
Global $BewegungSenkrecht=Random(5, 7, 1)
Global $BewegungWagrecht=Random(5, 7, 1)
Global $Speed=10

_GDIPlus_Startup()

Global $hGui = GUICreate("Rahmen", @DesktopWidth, @DesktopHeight, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
GUISetBkColor(0xABCDEF)
_WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255)
GUISetState()
Global $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGui)
$Pinsel = _GDIPlus_PenCreate(0xFF0000FF, 20)
Global $vanish = _GDIPlus_PenCreate(0xFF000000, 20)
$t1 = _Timer_SetTimer(0, 10, "move")
$begin=TimerInit()

While 1
    Sleep(40)
WEnd
    _GDIPlus_GraphicsDispose($hGraphic)
    _GDIPlus_BrushDispose($Pinsel)
    _GDIPlus_BrushDispose($vanish)

Func _ende()
    _GDIPlus_Shutdown()
    Exit
EndFunc  ;==>_ende

Func move($a, $b, $c, $d)
    _GDIPlus_GraphicsDrawLine ( $hGraphic, $ballpos1, $ballpos2, $ballpos1+50, $ballpos2+50, $vanish )
    $ballpos1+=$BewegungWagrecht * $Speed
    $ballpos2+=$BewegungSenkrecht * $Speed
    _GDIPlus_GraphicsDrawLine ( $hGraphic, $ballpos1, $ballpos2, $ballpos1+50, $ballpos2+50, $Pinsel )
    If $ballpos1 >= @DesktopWidth - 80 And $BewegungWagrecht > 0 Then $BewegungWagrecht = Random(-7, -5, 1)
    If $ballpos1 < 10 And $BewegungWagrecht < 0 Then $BewegungWagrecht = Random(5, 7, 1)
    If $ballpos2 >= @DesktopHeight - 95 And $BewegungSenkrecht > 0 Then $BewegungSenkrecht = Random(-7, -5, 1)
    If $ballpos2 < 30 And $BewegungSenkrecht < 0 Then $BewegungSenkrecht = Random(5, 7, 1)
    If _GDIPlus_PenGetColor ( $vanish )=0xFF000000 Then
    _GDIPlus_PenSetColor ( $vanish, 0xFFFFFF00 )
    ElseIf _GDIPlus_PenGetColor ( $vanish )=0xFFFFFF00 Then
    _GDIPlus_PenSetColor ( $vanish, 0xFFFF0000 )
    ElseIf _GDIPlus_PenGetColor ( $vanish )=0xFFFF0000 Then
    _GDIPlus_PenSetColor ( $vanish, 0xFF00FF00 )
    ElseIf _GDIPlus_PenGetColor ( $vanish )=0xFF00FF00 Then
    _GDIPlus_PenSetColor ( $vanish, 0xFF000000 )
    EndIf
;~     $dif=TimerDiff( $begin )
;~  If $dif>12000 Then
;~      _GDIPlus_GraphicsClear ( $hGraphic, 0xFFABCDEF )
;~      $begin=TimerInit()
;~  EndIf
EndFunc  ;==>move



Func _WinAPI_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $dwFlages = 0x03, $isColorRef = False)
   ; progandy
    If $dwFlages = Default Or $dwFlages = "" Or $dwFlages < 0 Then $dwFlages = 0x03
    If Not $isColorRef Then
        $i_transcolor = Hex(String($i_transcolor), 6)
        $i_transcolor = Execute('0x00' & StringMid($i_transcolor, 5, 2) & StringMid($i_transcolor, 3, 2) & StringMid($i_transcolor, 1, 2))
    EndIf
    Local $Ret = DllCall("user32.dll", "int", "SetLayeredWindowAttributes", "hwnd", $hwnd, "long", $i_transcolor, "byte", $Transparency, "long", $dwFlages)
    Select
        Case @error
            Return SetError(@error, 0, 0)
        Case $Ret[0] = 0
            Return SetError(4, _WinAPI_GetLastError(), 0)
        Case Else
            Return 1
    EndSelect
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Edited by Greek

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@Malkey Can you tell me what a 'handle to the update region' is for the third parameter of the RedrawWindow function?

martin

The third parameter of the RedrawWindow function, I believe, accepts the handles returned from_WinAPI_CreateRectRgn, _WinAPI_CreateRoundRectRgn wrappers or any of the "CreateTypeRgn" functions in gdi32.dll. I can not remember entering anything other than 0 in this third parameter. The only times I played around with regions which may require the RedrawWindow function, the region/s have been converted to a window handle with "SetWindowRgn".

I don't understand why the colour doesn't appear as transparent for the layered window. If I draw a rectangle filled with green say, and then draw a line through it with the transparent colour then the line is transparent as I expected, but when I draw the circle in the transoarent colour over the old circle it shows as the colour and not transparent. The size of the window doesn't affect this. If you can explain I would be grateful.

I think of a transparent colour as a colour with the alpha channel, AA equal to 00 in the hex colour format 0xAARRGGBB. With partial transparency, the alpha channel ranges between (1 to 254) or (0x01 to 0xFE), 0x00 being completely transparent and 0xFF being completely opaque.

I think you are referring to an apparent transparent colour, where the graphic's colour used is the same as the background colour. Your question makes more sense, kind of.

When you say the line through the green rectangle is transparent, do you mean you can not see the line, or, is there an etched invisible line showing the background colour through the green?

Either way I look at the problem you stated, there seems to be conflicting results. An example may clarify things.

The second example, draw circle on a circle, makes me think you need to use _WinAPI_UpdateLayeredWindow() to update the layered window. But the green rectangle example appears it is being updated.

I don't know.

Malkey

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#14 ·  Posted (edited)

martin

The third parameter of the RedrawWindow function, I believe, accepts the handles returned from_WinAPI_CreateRectRgn, _WinAPI_CreateRoundRectRgn wrappers or any of the "CreateTypeRgn" functions in gdi32.dll. I can not remember entering anything other than 0 in this third parameter. The only times I played around with regions which may require the RedrawWindow function, the region/s have been converted to a window handle with "SetWindowRgn".

I think of a transparent colour as a colour with the alpha channel, AA equal to 00 in the hex colour format 0xAARRGGBB. With partial transparency, the alpha channel ranges between (1 to 254) or (0x01 to 0xFE), 0x00 being completely transparent and 0xFF being completely opaque.

I think you are referring to an apparent transparent colour, where the graphic's colour used is the same as the background colour. Your question makes more sense, kind of.

When you say the line through the green rectangle is transparent, do you mean you can not see the line, or, is there an etched invisible line showing the background colour through the green?

Either way I look at the problem you stated, there seems to be conflicting results. An example may clarify things.

The second example, draw circle on a circle, makes me think you need to use _WinAPI_UpdateLayeredWindow() to update the layered window. But the green rectangle example appears it is being updated.

I don't know.

Malkey

Thanks for your repl Malkey.Here is an example.

#include <GUIConstantsEx.au3>
   #include <WindowsConstants.au3>
   #include <GDIPlus.au3>
   #include <timers.au3>
   #include <winapi.au3>
   
   HotKeySet("{ESC}", "_ende")
   
   Global $ballpos1=@DesktopWidth/2
   Global $ballpos2=@DesktopHeight/2
   Global $BewegungSenkrecht=Random(5, 7, 1)
   Global $BewegungWagrecht=Random(5, 7, 1)
   Global $Speed=10
   
   _GDIPlus_Startup()
   
   Global $hGui = GUICreate("Rahmen", @DesktopWidth, @DesktopHeight, -1, -1, $WS_POPUP, $WS_EX_LAYERED)
   GUISetBkColor(0xABCDEF)
   GUICtrlCreateLabel("",@DesktopWidth - 280,0,280,@DesktopHeight)
   GUICtrlSetBkColor(-1,0x555555)
   GUICtrlSetState(-1,$GUI_DISABLE)
   $BtnGreenRect = GUICtrlCreateButton("make green rect",@DesktopWidth - 240,80,180,20)
   $BtnTransParentRect = GUICtrlCreateButton("make 0xFFABCDEF rect",@DesktopWidth - 240,160,180,20)
;$BtnTransParentcircle = GUICtrlCreateButton("make 0xFFABCDEF circle",@DesktopWidth - 240,240,180,20)
   $BtnTransParentLine = GUICtrlCreateButton("make 0xFFABCDEF line",@DesktopWidth - 240,300,180,20)
   $BtnUpdate = GUICtrlCreateButton("update",@DesktopWidth - 240,380,180,20)
   $chkBox = GUICtrlCreateCheckbox("cover pen (else use brush)",@DesktopWidth - 240,460,180,20)
   $BtnDone = GUICtrlCreateButton("Exit",@DesktopWidth - 240,520,180,20)
   _WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255)
   GUISetState()
   Global $paintarc = true
   Global $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGui)
   Global $Pinsel = _GDIPlus_PenCreate(0xFF0000FF, 20)
   Global $vanish = _GDIPlus_PenCreate(0xFFABCDEF, 20)
   Global $hbrush1 = _GDIPlus_BrushCreateSolid(0xFFABCDEF)
   Global $hbrush2 = _GDIPlus_BrushCreateSolid(0xFF00FF00)
;_GDIPlus_GraphicsDrawArc ( $hGraphic, @DesktopWidth/2, @DesktopHeight/2, 70, 70, 180, 360, $Pinsel )
   $t1 = _Timer_SetTimer(0, 300, "move")
   
   While 1
   $msg = GUIGetMsg()
   switch $msg
   case $BtnGreenRect
       _GDIPlus_GraphicsFillRect($hGraphic, 1,100,@DesktopWidth - 280,300, $hBrush2)
   case $BtnTransParentRect
       _GDIPlus_GraphicsFillRect($hGraphic, 0,100,@DesktopWidth - 280,300, $hBrush1)
   case $BtnTransParentLine
       $v2 = _GDIPlus_PenCreate(0xFFABCDEF, 20);just in case something was going wrong with the $vanish pen
       _GDIPlus_GraphicsDrawLine($hGraphic, 0,0,@DesktopWidth - 280,@DesktopHeight, $v2)
       _GDIPlus_BrushDispose($v2)
   case $BtnUpdate
       _WinAPI_RedrawWindow($hGui)
   case $chkBox 
       $paintarc = Not $paintarc
   Case $BtnDone
       _ende()
   EndSwitch
   
   WEnd
   
   
   Func _ende()
       _GDIPlus_GraphicsDispose($hGraphic)
   _GDIPlus_PenDispose($Pinsel)
   _GDIPlus_PenDispose($vanish)
   _GDIPlus_BrushDispose($hbrush1)
   _GDIPlus_BrushDispose($hbrush2)
       _GDIPlus_Shutdown()
       Exit
   EndFunc;==>_ende
   
   Func move($a, $b, $c, $d)
       if $paintarc then
       _GDIPlus_GraphicsDrawArc ( $hGraphic, $ballpos1, $ballpos2, 70, 70, 180, 360, $vanish )
       Else
      _GDIPlus_GraphicsFillRect($hGraphic, $ballpos1-10, $ballpos2-10, 90, 90, $hBrush1)
      EndIf
       $ballpos1+=$BewegungWagrecht * $Speed
       $ballpos2+=$BewegungSenkrecht * $Speed
       _GDIPlus_GraphicsDrawArc ( $hGraphic, $ballpos1, $ballpos2, 70, 70, 180, 360, $Pinsel )
       If $ballpos1 >= @DesktopWidth - 280 - 115 And $BewegungWagrecht > 0 Then $BewegungWagrecht = Random(-7, -5, 1)
       If $ballpos1 < 10 And $BewegungWagrecht < 0 Then $BewegungWagrecht = Random(5, 7, 1)
       If $ballpos2 >= @DesktopHeight - 95 And $BewegungSenkrecht > 0 Then $BewegungSenkrecht = Random(-7, -5, 1)
       If $ballpos2 < 30 And $BewegungSenkrecht < 0 Then $BewegungSenkrecht = Random(5, 7, 1)
   EndFunc;==>move
   
   
   
   Func _WinAPI_SetLayeredWindowAttributes($hwnd, $i_transcolor, $Transparency = 255, $dwFlages = 0x03, $isColorRef = False)
   ; progandy
       If $dwFlages = Default Or $dwFlages = "" Or $dwFlages < 0 Then $dwFlages = 0x03
       If Not $isColorRef Then
           $i_transcolor = Hex(String($i_transcolor), 6)
           $i_transcolor = Execute('0x00' & StringMid($i_transcolor, 5, 2) & StringMid($i_transcolor, 3, 2) & StringMid($i_transcolor, 1, 2))
       EndIf
       Local $Ret = DllCall("user32.dll", "int", "SetLayeredWindowAttributes", "hwnd", $hwnd, "long", $i_transcolor, "byte", $Transparency, "long", $dwFlages)
       Select
           Case @error
               Return SetError(@error, 0, 0)
           Case $Ret[0] = 0
               Return SetError(4, _WinAPI_GetLastError(), 0)
           Case Else
               Return 1
       EndSelect
   EndFunc;==>_WinAPI_SetLayeredWindowAttributes

My question is

"Why does the rectangle get shown correctly whether it is the transparent colour or not, when the arcs are not shown correctly if they are the transparent colour?"

I don't think (believe) that _WinAPI_RedrawWindow($hGui) is really the correct function because all that does is to obliterate everything.

It looks as though a pen is not shown as transparent but a brush is. As though the pen colour is not really the colour you think it is. ( I seem to have remembered incorrectly about the lines because they are the same as the arcs.)

EDIT:

I tried using GdipCreatePen2 but failedl.

$vanish =  DllCall($ghGDIPDll, "int", "GdipCreatePen2", "int",_WinAPI_GetStockObject($hbrush1), "int", 20, "int", 2, "int*", 0)
 $vanish = $vanish[0]
doesn't work :P

Anyone know how I should do it?

Edited by martin

Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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My question is

"Why does the rectangle get shown correctly whether it is the transparent colour or not, when the arcs are not shown correctly if they are the transparent colour?"

I don't think (believe) that _WinAPI_RedrawWindow($hGui) is really the correct function because all that does is to obliterate everything.

It looks as though a pen is not shown as transparent but a brush is. As though the pen colour is not really the colour you think it is. ( I seem to have remembered incorrectly about the lines because they are the same as the arcs.)

I believe I found a solution.

From here

http://msdn.microsoft.com/en-us/library/2ha2ha35(VS.80).aspx

and

http://www.autoitscript.com/forum/index.ph...st&p=541838

The parameters for the user32.dll function, SetLayeredWindowAttributes are:

;hwnd -[in] Handle to the layered window.

;crKey - [in] COLORREF structure that specifies the transparency color key to be used when composing the layered window.

;bAlpha -[in] Alpha value used to describe the opacity of the layered window.

;dwFlags -[in] Specifies an action to take: LWA_COLORKEY, LWA_ALPHA

If the colorKey only is to be used, change the dwFlags parameter to 0x01.

So use

_WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255, 0x01)

This link

http://msdn.microsoft.com/en-us/library/ms997507.aspx

has some good info about Layered Windows.

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I believe I found a solution.

From here

http://msdn.microsoft.com/en-us/library/2ha2ha35(VS.80).aspx

and

http://www.autoitscript.com/forum/index.ph...st&p=541838

The parameters for the user32.dll function, SetLayeredWindowAttributes are:

;hwnd -[in] Handle to the layered window.

;crKey - [in] COLORREF structure that specifies the transparency color key to be used when composing the layered window.

;bAlpha -[in] Alpha value used to describe the opacity of the layered window.

;dwFlags -[in] Specifies an action to take: LWA_COLORKEY, LWA_ALPHA

If the colorKey only is to be used, change the dwFlags parameter to 0x01.

So use

_WinAPI_SetLayeredWindowAttributes($hGui, 0xABCDEF, 255, 0x01)

This link

http://msdn.microsoft.com/en-us/library/ms997507.aspx

has some good info about Layered Windows.

Thanks for looking at this Malkey. But I don't see how it can be connected with the layered window becuase drawing with a brush works correctly. Drawing on a layered window in the transparent colour produces a transparent effect if you use a brush but not if you use a pencil. Or maybe it's my (lack of) understanding of what a pencil is.

I tried with the layered window dwFlags set to 0x01 but it made no difference.


Serial port communications UDF Includes functions for binary transmission and reception.printing UDF Useful for graphs, forms, labels, reports etc.Add User Call Tips to SciTE for functions in UDFs not included with AutoIt and for your own scripts.Functions with parameters in OnEvent mode and for Hot Keys One function replaces GuiSetOnEvent, GuiCtrlSetOnEvent and HotKeySet.UDF IsConnected2 for notification of status of connected state of many urls or IPs, without slowing the script.

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