GDIPlus_GraphicsFillPolygon

[Lakes 242]

This one is included in the GDIP include

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; #FUNCTION# ====================================================================================================================
; Name...........: _GDIPlus_GraphicsFillPolygon2
; Description ...: Uses a brush to fill the interior of a polygon
; Syntax.........: _GDIPlus_GraphicsFillPolygon2($hGraphics, $aPoints[, $hBrush = 0[, $iFillMode = 0]])
; Parameters ....: $hGraphics - Pointer to a Graphics object
;                 $aPoints   - Array that specify the vertices of the polygon:
;                 |[0][0] - Number of vertices
;                 |[1][0] - Point 1 X position
;                 |[1][1] - Point 1 Y position
;                 |[2][0] - Point 2 X position
;                 |[2][1] - Point 2 Y position
;                 |[n][0] - Point n X position
;                 |[n][1] - Point n Y position
;                 $hBrush   - Pointer to a Brush object that is used to paint the interior of the polygon. If 0, a black brush
;                 +will be used.
;                 $iFillMode - Fill mode of the interior of the polygon:
;                 |0 - The areas are filled according to the even-odd parity rule
;                 |1 - The areas are filled according to the nonzero winding rule
; Return values .: Success    - True
;                 Failure     - False and either:
;                 |@error and @extended are set if DllCall failed
;                 |$GDIP_STATUS contains a non zero value specifying the error code
; Remarks .......: None
; Related .......: _GDIPlus_GraphicsFillPolygon
; Link ..........; @@MsdnLink@@ GdipFillPolygon
; Example .......; No
; ===============================================================================================================================
Func _GDIPlus_GraphicsFillPolygon2($hGraphics, $aPoints, $hBrush = 0, $iFillMode = 0)
Local $iI, $iCount, $iTmpErr, $iTmpExt, $pPoints, $tPoints, $aResult
__GDIPlus_BrushDefCreate($hBrush)
$iCount = $aPoints[0][0]
$tPoints = DllStructCreate("float[" & $iCount * 2 & "]")
$pPoints = DllStructGetPtr($tPoints)
For $iI = 1 To $iCount
  DllStructSetData($tPoints, 1, $aPoints[$iI][0], (($iI - 1) * 2) + 1)
  DllStructSetData($tPoints, 1, $aPoints[$iI][1], (($iI - 1) * 2) + 2)
Next
$aResult = DllCall($ghGDIPDll, "uint", "GdipFillPolygon", "hwnd", $hGraphics, "hwnd", $hBrush, "ptr", $pPoints, "int", $iCount, "int", $iFillMode)
$iTmpErr = @error
$iTmpExt = @extended
__GDIPlus_BrushDefDispose()
If $iTmpErr Then Return SetError($iTmpErr, $iTmpExt, False)
$GDIP_STATUS = $aResult[0]
Return $aResult[0] = 0
EndFunc   ;==>_GDIPlus_GraphicsFillPolygon2

But this one is not

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; #FUNCTION# ===================================================================================
; Name...........: _GDIPlus_GraphicsFillPolygon
; Description ...: Fill a polygon
; Syntax.........: _GDIPlus_GraphicsFillPolygon($hGraphics, $aPoints[, $hBrush = 0])
; Parameters ....: $hGraphics - Handle to a Graphics object
; $aPoints - Array that specify the vertices of the polygon:
; |[0][0] - Number of vertices
; |[1][0] - Vertice 1 X position
; |[1][1] - Vertice 1 Y position
; |[2][0] - Vertice 2 X position
; |[2][1] - Vertice 2 Y position
; |[n][0] - Vertice n X position
; |[n][1] - Vertice n Y position
; $hBrush - Handle to a brush object that is used to fill the polygon.
; - If $hBrush is 0, a solid black brush is used.
; Return values .: Success - True
; Failure - False
; Author ........:
; Modified.......: smashly
; Remarks .......:
; Related .......:
; Link ..........; @@MsdnLink@@ GdipFillPolygonI
; Example .......; Yes
; ===============================================================================================
Func _GDIPlus_GraphicsFillPolygon($hGraphics, $aPoints, $hBrush = 0)
Local $iI, $iCount, $pPoints, $tPoints, $aResult, $tmpError, $tmpExError
$iCount = $aPoints[0][0]
$tPoints = DllStructCreate("int[" & $iCount * 2 & "]")
$pPoints = DllStructGetPtr($tPoints)
For $iI = 1 To $iCount
DllStructSetData($tPoints, 1, $aPoints[$iI][0], (($iI - 1) * 2) + 1)
DllStructSetData($tPoints, 1, $aPoints[$iI][1], (($iI - 1) * 2) + 2)
Next
_GDIPlus_BrushDefCreate($hBrush)
$aResult = DllCall($ghGDIPDll, "int", "GdipFillPolygonI", "hWnd", $hGraphics, "hWnd", $hBrush, _
"ptr", $pPoints, "int", $iCount, "int", "FillModeAlternate")
$tmpError = @error
$tmpExError = @extended
_GDIPlus_BrushDefDispose()
If $tmpError Then Return SetError($tmpError, $tmpExError, False)
Return SetError($aResult[0], 0, $aResult[0] = 0)
EndFunc ;==>_GDIPlus_GraphicsFillPolygon

So I should be able to replace _GDIPlus_GraphicsFillPolygon with _GDIPlus_GraphicsFillPolygon2 and just add a zero at the end, but it crashes autoit.

Here`s the example I`m looking at, with the _GDIPlus_GraphicsFillPolygon2 commented out.

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#include <GDIPlus.au3>
#include <WindowsConstants.au3>
#include <GuiConstants.au3>
#include <GDIP.au3>
Global $width = 700
Global $height = 300
Global $iTrans
$hwnd = GUICreate("test", $width, $height)
GUISetState()
If Not FileExists(@DesktopDir & "\bitmap.png") Then InetGet("http://www.autoitscript.com/forum/uploads/monthly_10_2008/post-31256-1224504936_thumb.png", _
                                                                                @DesktopDir & "\bitmap.png")
_GDIPlus_Startup()
$graphics = _GDIPlus_GraphicsCreateFromHWND($hwnd)
_GDIPlus_GraphicsClear($graphics, 0xFF008800)
$image = _GDIPlus_ImageLoadFromFile(@DesktopDir & "\bitmap.png")
$iwidth = _GDIPlus_ImageGetWidth($image)
$iheight = _GDIPlus_ImageGetHeight($image)
$hGraphicGUI = _GDIPlus_GraphicsCreateFromHWND($hwnd)
$hBMPBuff = _GDIPlus_BitmapCreateFromGraphics($width, $height, $hGraphicGUI)
$hGraphic = _GDIPlus_ImageGetGraphicsContext($hBMPBuff)
$brush = _GDIPlus_BrushCreateSolid(0xFF000000)
$family = _GDIPlus_FontFamilyCreate("Arial")
$font = _GDIPlus_FontCreate($family, 24)
$layout = _GDIPlus_RectFCreate(0, 250, $width, $height)
$format = _GDIPlus_StringFormatCreate()
_GDIPlus_StringFormatSetAlign($format, 2)
_GDIPlus_GraphicsDrawStringEx($graphics, "Normal   ", $font, $layout, $format, $brush)
_GDIPlus_GraphicsDrawImageRect($graphics, $image, 480, 20, $iwidth, $iheight)
_GDIPlus_StringFormatSetAlign($format, 1)
_GDIPlus_GraphicsDrawStringEx($graphics, "Top and Bottom Fade ", $font, $layout, $format, $brush)
GDIPlus_TopBotFade($hGraphic, $image, $iheight / 2 - 20, 30, 0xFF666666, 0xFF333333)
_GDIPlus_GraphicsDrawImage($graphics, $hBMPBuff, 250, 20)
_GDIPlus_StringFormatSetAlign($format, 0)
_GDIPlus_GraphicsDrawStringEx($graphics, "  Bevelled", $font, $layout, $format, $brush)
;GDIPlus_AddBevel($graphics, $image, 30, 0xFF606060, 0xFFAFAFAF)
_GDIPlus_GraphicsDrawImage($graphics, $hBMPBuff, 20, 20)
Do
    sleep(10)
Until GUIGetMsg() = -3
_GDIPlus_ImageDispose($image)
_GDIPlus_BrushDispose($brush)
_GDIPlus_GraphicsDispose($graphics)
_GDIPlus_GraphicsDispose($hGraphic)
_WinAPI_DeleteObject($hBMPBuff)
_GDIPlus_FontDispose($font)
_GDIPlus_FontFamilyDispose($family)
_GDIPlus_StringFormatDispose($format)
_GDIPlus_Shutdown()
Func GDIPlus_TopBotFade($hGraphic, $image, $topless, $Botless, $TopColor, $iBotColor, $TotTrans = 1)
    Local $iwidth = _GDIPlus_ImageGetWidth($image)
    Local $iheight = _GDIPlus_ImageGetHeight($image)
    Local $aPoints[5][2] = [[4, 0],[0, 0],[$iwidth, 0],[$iwidth, $topless],[0, $topless]]
; _GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $TopColor,0)
    GDIPlus_GraphicsFillPolygon($hGraphic, $aPoints, $TopColor)
    Local $aPoints[5][2] = [[4, 0],[0, $iheight - $Botless],[$iwidth, $iheight - $Botless],[$iwidth, $iheight],[0, $iheight]]
; _GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $iBotColor,0)
GDIPlus_GraphicsFillPolygon($hGraphic, $aPoints, $iBotColor)
    For $n = 0 To $iheight - 1
        If ($iheight - $n) <= $Botless Then ; Bottom invisible up $topless
            $iTrans = (($iheight - $n) / $Botless)
        ElseIf $n <= $topless Then ; Top invisible down $topless
            $iTrans = $n / $topless
        Else
            $iTrans = $TotTrans
        EndIf
        If $iTrans > $TotTrans Then $iTrans = $TotTrans
        _GDIPlus_GraphicsDrawImageRectRectTrans($hGraphic, $image, 1, $n, $iwidth, 1, 1, $n, $iwidth, 1, 2, $iTrans)
    Next
    Return
EndFunc   ;==>GDIPlus_TopBotFade
Func GDIPlus_AddBevel($graphics, $image, $iBdr, $iTopLeftColor, $iBotRightColor)
    Local $iwidth = _GDIPlus_ImageGetWidth($image)
    Local $iheight = _GDIPlus_ImageGetHeight($image)
    Local $aPoints[4][2] = [[3, 0],[0, 0],[$iwidth, 0],[0, $iheight]]
; _GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $iTopLeftColor, 0)
     GDIPlus_GraphicsFillPolygon($hGraphic, $aPoints, $iTopLeftColor)
    Local $aPoints[4][2] = [[3, 0],[$iwidth, 0],[$iwidth, $iheight],[0, $iheight]]
; _GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $iBotRightColor, 0)
     GDIPlus_GraphicsFillPolygon($hGraphic, $aPoints, $iBotRightColor)
    For $n = 0 To $iBdr
        $iTrans = Round($n / $iBdr, 3)
        ;ConsoleWrite(" $iTrans  = " & $iTrans & "   $n = "& $n  & @CRLF)

_GDIPlus_GraphicsDrawImageRectRectTrans($hGraphic, $image, $n, $n, $iwidth - 2 * $n, $iheight - 2 * $n, $n, $n, $iwidth - 2 * $n, $iheight - 2 * $n, 2, $iTrans)
    Next
    Return
EndFunc   ;==>GDIPlus_AddBevel
Func _GDIPlus_GraphicsDrawImageRectRectTrans($hGraphics, $hImage, $iSrcX, $iSrcY, $iSrcWidth = "", $iSrcHeight = "", _
        $iDstX = "", $iDstY = "", $iDstWidth = "", $iDstHeight = "", $iUnit = 2, $nTrans = 1)
  
    Local $tColorMatrix, $x, $hImgAttrib, $iW = _GDIPlus_ImageGetWidth($hImage), $iH = _GDIPlus_ImageGetHeight($hImage)
    If $iSrcWidth = 0 Or $iSrcWidth = "" Then $iSrcWidth = $iW
    If $iSrcHeight = 0 Or $iSrcHeight = "" Then $iSrcHeight = $iH
    If $iDstX = "" Then $iDstX = $iSrcX
    If $iDstY = "" Then $iDstY = $iSrcY
    If $iDstWidth = "" Then $iDstWidth = $iSrcWidth
    If $iDstHeight = "" Then $iDstHeight = $iSrcHeight
    If $iUnit = "" Then $iUnit = 2
    ;;create color matrix data
    $tColorMatrix = DllStructCreate("float[5];float[5];float[5];float[5];float[5]")
    ;blending values:
    $x = DllStructSetData($tColorMatrix, 1, 1, 1) * DllStructSetData($tColorMatrix, 2, 1, 2) * DllStructSetData($tColorMatrix, 3, 1, 3) * _
            DllStructSetData($tColorMatrix, 4, $nTrans, 4) * DllStructSetData($tColorMatrix, 5, 1, 5)
    ;;create an image attributes object and update its color matrix
    $hImgAttrib = DllCall($ghGDIPDll, "int", "GdipCreateImageAttributes", "ptr*", 0)
    $hImgAttrib = $hImgAttrib[1]
    DllCall($ghGDIPDll, "int", "GdipSetImageAttributesColorMatrix", "ptr", $hImgAttrib, "int", 1, _
            "int", 1, "ptr", DllStructGetPtr($tColorMatrix), "ptr", 0, "int", 0)
  
    ;draw image into graphic object with alpha blend
    DllCall($ghGDIPDll, "int", "GdipDrawImageRectRectI", "hwnd", $hGraphics, "hwnd", $hImage, "int", $iDstX, "int", _
           $iDstY, "int", $iDstWidth, "int", $iDstHeight, "int", $iSrcX, "int", $iSrcY, "int", $iSrcWidth, "int", _
            $iSrcHeight, "int", $iUnit, "ptr", $hImgAttrib, "int", 0, "int", 0)
    ;;clean up
    DllCall($ghGDIPDll, "int", "GdipDisposeImageAttributes", "ptr", $hImgAttrib)
_GDIPlus_ImageAttributesDispose($hImgAttrib)
Return
EndFunc   ;==>_GDIPlus_GraphicsDrawImageRectRectTrans
Func GDIPlus_GraphicsFillPolygon($hGraphics, $aPoints, $iARGB = -1)
    Local $iI, $iCount, $pPoints, $tPoints, $aResult, $tmpError, $tmpExError
    $iCount = $aPoints[0][0]
    $tPoints = DllStructCreate("int[" & $iCount * 2 & "]")
    $pPoints = DllStructGetPtr($tPoints)
    For $iI = 1 To $iCount
        DllStructSetData($tPoints, 1, $aPoints[$iI][0], (($iI - 1) * 2) + 1)
        DllStructSetData($tPoints, 1, $aPoints[$iI][1], (($iI - 1) * 2) + 2)
    Next
    $hBrush = _GDIPlus_BrushCreateSolid($iARGB)
    $aResult = DllCall($ghGDIPDll, "int", "GdipFillPolygonI", "hWnd", $hGraphics, "hWnd", $hBrush, _
            "ptr", $pPoints, "int", $iCount, "int", "FillModeAlternate")
    $tmpError = @error
    $tmpExError = @extended
    _GDIPlus_BrushDispose($hBrush)
    If $tmpError Then Return SetError($tmpError, $tmpExError, False)
    Return SetError($aResult[0], 0, $aResult[0] = 0)
EndFunc   ;==>GDIPlus_GraphicsFillPolygon

[UEZ 1,278]

The reason for the crash is that you call the function Func GDIPlus_TopBotFade($hGraphic, $image, $topless, $Botless, $TopColor, $iBotColor, $TotTrans = 1) with wrong parameter.

$TopColor is not a brush handle for the function.

Try this instead:

Func GDIPlus_TopBotFade($hGraphic, $image, $topless, $Botless, $TopColor, $iBotColor, $TotTrans = 1, $hBrush = 0)
    Local $iwidth = _GDIPlus_ImageGetWidth($image)
    Local $iheight = _GDIPlus_ImageGetHeight($image)
    Local $aPoints[5][2] = [[4, 0],[0, 0],[$iwidth, 0],[$iwidth, $topless],[0, $topless]]
    _GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $hBrush, 0)
;~     GDIPlus_GraphicsFillPolygon($hGraphic, $aPoints, $TopColor)
    Local $aPoints[5][2] = [[4, 0],[0, $iheight - $Botless],[$iwidth, $iheight - $Botless],[$iwidth, $iheight],[0, $iheight]]
 _GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $hBrush, 0)
;~ GDIPlus_GraphicsFillPolygon($hGraphic, $aPoints, $iBotColor)
    For $n = 0 To $iheight - 1
        If ($iheight - $n) <= $Botless Then ; Bottom invisible up $topless
            $iTrans = (($iheight - $n) / $Botless)
        ElseIf $n <= $topless Then ; Top invisible down $topless
            $iTrans = $n / $topless
        Else
            $iTrans = $TotTrans
        EndIf
        If $iTrans > $TotTrans Then $iTrans = $TotTrans
        _GDIPlus_GraphicsDrawImageRectRectTrans($hGraphic, $image, 1, $n, $iwidth, 1, 1, $n, $iwidth, 1, 2, $iTrans)
    Next
    Return
EndFunc   ;==>GDIPlus_TopBotFade

Br,

UEZ

[Lakes 242]

Thanks UEZ, donno how I missed that...

Solved.

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#include <GDIPlus.au3>
#include <WindowsConstants.au3>
#include <GuiConstants.au3>
#include <GDIP.au3>
Global $width = 700
Global $height = 300
Global $iTrans
$hwnd = GUICreate("test", $width, $height)
GUISetState()
If Not FileExists(@DesktopDir & "bitmap.png") Then InetGet("http://www.autoitscript.com/forum/uploads/monthly_10_2008/post-31256-1224504936_thumb.png", _
                                                                                @DesktopDir & "bitmap.png")
_GDIPlus_Startup()
$graphics = _GDIPlus_GraphicsCreateFromHWND($hwnd)
_GDIPlus_GraphicsClear($graphics, 0xFF008800)
$image = _GDIPlus_ImageLoadFromFile(@DesktopDir & "bitmap.png")
$iwidth = _GDIPlus_ImageGetWidth($image)
$iheight = _GDIPlus_ImageGetHeight($image)
$hGraphicGUI = _GDIPlus_GraphicsCreateFromHWND($hwnd)
$hBMPBuff = _GDIPlus_BitmapCreateFromGraphics($width, $height, $hGraphicGUI)
$hGraphic = _GDIPlus_ImageGetGraphicsContext($hBMPBuff)
$brush = _GDIPlus_BrushCreateSolid(0xFF000000)
$family = _GDIPlus_FontFamilyCreate("Arial")
$font = _GDIPlus_FontCreate($family, 24)
$layout = _GDIPlus_RectFCreate(0, 250, $width, $height)
$format = _GDIPlus_StringFormatCreate()
_GDIPlus_StringFormatSetAlign($format, 2)
_GDIPlus_GraphicsDrawStringEx($graphics, "Normal   ", $font, $layout, $format, $brush)
_GDIPlus_GraphicsDrawImageRect($graphics, $image, 480, 20, $iwidth, $iheight)
_GDIPlus_StringFormatSetAlign($format, 1)
_GDIPlus_GraphicsDrawStringEx($graphics, "Top and Bottom Fade ", $font, $layout, $format, $brush)
GDIPlus_TopBotFade($hGraphic, $image, $iheight / 2 - 20, 30, 0xFF666666, 0xFF333333)
_GDIPlus_GraphicsDrawImage($graphics, $hBMPBuff, 250, 20)
_GDIPlus_StringFormatSetAlign($format, 0)
_GDIPlus_GraphicsDrawStringEx($graphics, "  Bevelled", $font, $layout, $format, $brush)
;GDIPlus_AddBevel($graphics, $image, 30, 0xFF606060, 0xFFAFAFAF)
_GDIPlus_GraphicsDrawImage($graphics, $hBMPBuff, 20, 20)
Do
    sleep(10)
Until GUIGetMsg() = -3
_GDIPlus_ImageDispose($image)
_GDIPlus_BrushDispose($brush)
_GDIPlus_GraphicsDispose($graphics)
_GDIPlus_GraphicsDispose($hGraphic)
_WinAPI_DeleteObject($hBMPBuff)
_GDIPlus_FontDispose($font)
_GDIPlus_FontFamilyDispose($family)
_GDIPlus_StringFormatDispose($format)
_GDIPlus_Shutdown()
Func GDIPlus_TopBotFade($hGraphic, $image, $topless, $Botless, $TopColor, $iBotColor, $TotTrans = 1, $hBrush = 0)
    Local $iwidth = _GDIPlus_ImageGetWidth($image)
    Local $iheight = _GDIPlus_ImageGetHeight($image)
    Local $aPoints[5][2] = [[4, 0],[0, 0],[$iwidth, 0],[$iwidth, $topless],[0, $topless]]
    _GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $hBrush, 0)
    Local $aPoints[5][2] = [[4, 0],[0, $iheight - $Botless],[$iwidth, $iheight - $Botless],[$iwidth, $iheight],[0, $iheight]]
_GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $hBrush, 0)
    For $n = 0 To $iheight - 1
        If ($iheight - $n) <= $Botless Then ; Bottom invisible up $topless
            $iTrans = (($iheight - $n) / $Botless)
        ElseIf $n <= $topless Then ; Top invisible down $topless
            $iTrans = $n / $topless
        Else
            $iTrans = $TotTrans
        EndIf
        If $iTrans > $TotTrans Then $iTrans = $TotTrans
        _GDIPlus_GraphicsDrawImageRectRectTrans($hGraphic, $image, 1, $n, $iwidth, 1, 1, $n, $iwidth, 1, 2, $iTrans)
    Next
    Return
EndFunc   ;==>GDIPlus_TopBotFade

Func GDIPlus_AddBevel($graphics, $image, $iBdr, $iTopLeftColor, $iBotRightColor, $hBrush = 0)
    Local $iwidth = _GDIPlus_ImageGetWidth($image)
    Local $iheight = _GDIPlus_ImageGetHeight($image)
    Local $aPoints[4][2] = [[3, 0],[0, 0],[$iwidth, 0],[0, $iheight]]
_GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $hBrush, 0)
    Local $aPoints[4][2] = [[3, 0],[$iwidth, 0],[$iwidth, $iheight],[0, $iheight]]
_GDIPlus_GraphicsFillPolygon2($hGraphic, $aPoints, $hBrush, 0)
    For $n = 0 To $iBdr
        $iTrans = Round($n / $iBdr, 3)
        ;ConsoleWrite(" $iTrans  = " & $iTrans & "   $n = "& $n  & @CRLF)
_GDIPlus_GraphicsDrawImageRectRectTrans($hGraphic, $image, $n, $n, $iwidth - 2 * $n, $iheight - 2 * $n, $n, $n, $iwidth - 2 * $n, $iheight - 2 * $n, 2, $iTrans)
    Next
    Return
EndFunc   ;==>GDIPlus_AddBevel

; #FUNCTION# ===================================================================================================
; Name...........: _GDIPlus_GraphicsDrawImageRectRectTrans
; Description ...: Draw an Image object with transparency
; Syntax.........: _GDIPlus_GraphicsDrawImageRectRect($hGraphics, $hImage, $iSrcX, $iSrcY, [$iSrcWidth, _
;                                  [$iSrcHeight, [$iDstX, [$iDstY, [$iDstWidth, [$iDstHeight[, [$iUnit = 2]]]]]]])
; Parameters ....: $hGraphics   - Handle to a Graphics object
;                 $hImage     - Handle to an Image object
;                 $iSrcX       - The X coordinate of the upper left corner of the source image
;                 $iSrcY       - The Y coordinate of the upper left corner of the source image
;                 $iSrcWidth   - Width of the source image
;                 $iSrcHeight  - Height of the source image
;                 $iDstX       - The X coordinate of the upper left corner of the destination image
;                 $iDstY       - The Y coordinate of the upper left corner of the destination image
;                 $iDstWidth   - Width of the destination image
;                 $iDstHeight  - Height of the destination image
;                 $iUnit       - Specifies the unit of measure for the image
;                 $nTrans     - Value range from 0 (Zero for invisible) to 1.0 (fully opaque)
; Return values .: Success    - True
;                 Failure     - False
; Author ........: Siao
; Modified.......: Malkey
; Remarks .......:
; Related .......:
; Link ..........; http://www.autoitscript.com/forum/index....=&showtopic=70573&view=findpos
; Example .......; Yes
Func _GDIPlus_GraphicsDrawImageRectRectTrans($hGraphics, $hImage, $iSrcX, $iSrcY, $iSrcWidth = "", $iSrcHeight = "", _
        $iDstX = "", $iDstY = "", $iDstWidth = "", $iDstHeight = "", $iUnit = 2, $nTrans = 1)

    Local $tColorMatrix, $x, $hImgAttrib, $iW = _GDIPlus_ImageGetWidth($hImage), $iH = _GDIPlus_ImageGetHeight($hImage)
    If $iSrcWidth = 0 Or $iSrcWidth = "" Then $iSrcWidth = $iW
    If $iSrcHeight = 0 Or $iSrcHeight = "" Then $iSrcHeight = $iH
    If $iDstX = "" Then $iDstX = $iSrcX
    If $iDstY = "" Then $iDstY = $iSrcY
    If $iDstWidth = "" Then $iDstWidth = $iSrcWidth
    If $iDstHeight = "" Then $iDstHeight = $iSrcHeight
    If $iUnit = "" Then $iUnit = 2
 
;;create an image attributes object and update its color matrix 
Local  $iColorAdjustType = 1, $fEnable = 1
$hImgAttrib = _GDIPlus_ImageAttributesCreate()
; #FUNCTION# ====================================================================================================================
; Name...........: _GDIPlus_ColorMatrixCreateScale
; Description ...: Creates and initializes a scaling color matrix
; Syntax.........: _GDIPlus_ColorMatrixCreateScale($nRed, $nGreen, $nBlue[, $nAlpha = 1])
; Parameters ....: $nRed   - Red component scaling factor
;                 $nGreen - Green component scaling factor
;                 $nBlue  - Blue component scaling factor
;                 $nAlpha - Alpha component scaling factor
; Return values .: Success    - $tagGDIPCOLORMATRIX structure that contains a scaling color matrix
;                 Failure     - 0
; Remarks .......: A scaling color matrix is used to multiply components of a color by multiplier factors
;;create color matrix data
$tColorMatrix = _GDIPlus_ColorMatrixCreateScale(1, 1, 1, $nTrans)
$pColorMatrix = DllStructGetPtr($tColorMatrix) 
_GDIPlus_ImageAttributesSetColorMatrix($hImgAttrib, $iColorAdjustType, $fEnable, $pColorMatrix)

    ;draw image into graphic object with alpha blend
; #FUNCTION# ===================================================================================================
; Name...........: _GDIPlus_GraphicsDrawImageRectRectTrans
; Description ...: Draw an Image object with transparency
; Syntax.........: _GDIPlus_GraphicsDrawImageRectRect($hGraphics, $hImage, $iSrcX, $iSrcY, [$iSrcWidth, _
;                                  [$iSrcHeight, [$iDstX, [$iDstY, [$iDstWidth, [$iDstHeight[, [$iUnit = 2]]]]]]])
; Parameters ....: $hGraphics   - Handle to a Graphics object
;                 $hImage     - Handle to an Image object
;                 $iSrcX       - The X coordinate of the upper left corner of the source image
;                 $iSrcY       - The Y coordinate of the upper left corner of the source image
;                 $iSrcWidth   - Width of the source image
;                 $iSrcHeight  - Height of the source image
;                 $iDstX       - The X coordinate of the upper left corner of the destination image
;                 $iDstY       - The Y coordinate of the upper left corner of the destination image
;                 $iDstWidth   - Width of the destination image
;                 $iDstHeight  - Height of the destination image
;                 $iUnit       - Specifies the unit of measure for the image
;                 $nTrans     - Value range from 0 (Zero for invisible) to 1.0 (fully opaque)
; Return values .: Success    - True
;                 Failure     - False
; Author ........: Siao
; Modified.......: Malkey
; Remarks .......:
; Related .......:
; Link ..........; http://www.autoitscript.com/forum/index....=&showtopic=70573&view=findpos
; Example .......; Yes
    DllCall($ghGDIPDll, "int", "GdipDrawImageRectRectI", "hwnd", $hGraphics, "hwnd", $hImage, "int", $iDstX, "int", _
           $iDstY, "int", $iDstWidth, "int", $iDstHeight, "int", $iSrcX, "int", $iSrcY, "int", $iSrcWidth, "int", _
            $iSrcHeight, "int", $iUnit, "ptr", $hImgAttrib, "int", 0, "int", 0)
 
    ;;clean up
_GDIPlus_ImageAttributesDispose($hImgAttrib)
Return
EndFunc   ;==>_GDIPlus_GraphicsDrawImageRectRectTrans

Link to original example for refernce is

Edited November 10, 2011 by Lakes