Ich weiß, viele verstehen GDI+ erstmal nicht so ganz und wollen/können sich nicht so intensiv damit beschäftigen.
Deswegen habe ich jetzt eine Funktion gebastelt (die leider nicht sehr schnell ist), die ein Bild dreht.
Und auch Funktionen wie auf ein Bild eine Maske setzen sind dabei und ein paar Funktionen um Teile vom Bild mit Alpha zu transparentieren ( Ein paar Funktionen habe ich glaube ich schonmal vorgestellt, aber sie sind in der gleichen Datei 
)
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#include-once
#include <DLLshow.au3>
#include <GDIP.au3>
;#test
_GDIPlus_Startup()
$bmp=_GDIPlus_BitmapCreateFromFile("zzz.bmp")
$alpha=100
$bmp=_BmpTEllipse($bmp,$alpha)
_GDIPlus_Imageshow($bmp)
_GDIPlus_BitmapDispose($bmp)
$bmp=_GDIPlus_BitmapCreateFromFile("zzz.bmp")
$bmp=_TBmpFromBmp($bmp,$alpha,0,10,-1,10)
$bmp=_TBmpFromBmp($bmp,$alpha,0,30,-1,10)
$bmp=_TBmpFromBmp($bmp,$alpha,0,50,-1,10)
$bmp=_TBmpFromBmp($bmp,$alpha,0,70,-1,10)
$bmp=_TBmpFromBmp($bmp,$alpha,0,90,-1,10)
$bmp=_TBmpFromBmp($bmp,$alpha,10,0,10,-1)
$bmp=_TBmpFromBmp($bmp,$alpha,30,0,10,-1)
$bmp=_TBmpFromBmp($bmp,$alpha,50,0,10,-1)
$bmp=_TBmpFromBmp($bmp,$alpha,70,0,10,-1)
$bmp=_TBmpFromBmp($bmp,$alpha,90,0,10,-1)
$bmp=_TBmpFromBmp($bmp,$alpha,110,0,10,-1)
_GDIPlus_Imageshow($bmp)
_GDIPlus_BitmapDispose($bmp)
$bmp=_GDIPlus_BitmapCreateFromFile("zzz.bmp")
$bmp=_TBmpFromBmpDll($bmp,$alpha)
$bmp=_CreateTurnedImage($bmp,45)
_GDIPlus_Imageshow($bmp)
_GDIPlus_BitmapDispose($bmp)
_GDIPlus_Shutdown()
;#
Func _CreateTurnedImage($bmp,$winkel)
if $bmp=0 then return 0
Local $gra,$buffer,$backgra
Local $matrix=_GDIPlus_MatrixCreate()
Local $w,$h
$w=_GDIPlus_ImageGetWidth($bmp)
$h=_GDIPlus_ImageGetHeight($bmp)
_GDIPlus_MatrixTranslate($matrix, $w/2, $h/2)
$gra=_GDIPlus_ImageGetGraphicsContext($bmp)
$buffer=_GDIPlus_BitmapCreateFromGraphics($w,$h,$gra)
$backgra=_GDIPlus_ImageGetGraphicsContext($buffer)
_GDIPlus_MatrixRotate($matrix,$winkel)
_GDIPlus_GraphicsSetTransform($backgra, $matrix)
$color=_getnotincolor($bmp,$w,$h)
_GDIPlus_GraphicsClear($backgra,$color)
_GDIPlus_GraphicsDrawImage($backgra,$bmp,-$w/2,-$h/2)
_MaskImage($buffer,$color)
_GDIPlus_GraphicsDrawImage($gra,$buffer,0,0)
_GDIPlus_MatrixDispose($matrix)
_GDIPlus_GraphicsDispose($backgra)
_GDIPlus_BitmapDispose($buffer)
_GDIPlus_GraphicsDispose($gra)
Return $bmp
EndFunc
Func _MaskImage($bmp,$color="0xFF000000")
If $bmp=0 Then Return 0
Local $w,$h
$w=_GDIPlus_ImageGetWidth($bmp)
$h=_GDIPlus_ImageGetHeight($bmp)
For $x=0 to $w
For $y=0 to $h
$farbe="0x"&Hex(_gdiplus_Bitmapgetpixel($bmp,$x,$y))
if $farbe=$color Then _gdiplus_Bitmapsetpixel($bmp,$x,$y,"0x00"&StringRight($color,6))
Next
Next
Return $bmp
EndFunc
Func _BmpTEllipse($bmp,$alpha=100,$px=0,$py=0,$width=-1,$height=-1)
If $bmp=0 Then Return 0
Local $w,$h
$w=_GDIPlus_ImageGetWidth($bmp)-1
$h=_GDIPlus_ImageGetHeight($bmp)-1
If $width=-1 Then $width=$w
If $height=-1 Then $height=$h
Local $tmpbmp=_GDIPlus_BitmapCloneArea($bmp,0,0,$w,$h)
Local $color
$color=_getnotincolor($bmp,$w,$h)
Local $gra=_GDIPlus_ImageGetGraphicsContext($bmp)
Local $brush=_GDIPlus_BrushCreateSolid($color)
_GDIPlus_GraphicsFillEllipse($gra,$px,$py,$width,$height,$brush)
_GDIPlus_BrushDispose($brush)
_GDIPlus_GraphicsDispose($gra)
For $x=0 To $w
For $y=0 To $h
$hex="0x"&Hex(_gdiplus_Bitmapgetpixel($bmp,$x,$y))
If $hex=$color Then
$ncolor="0x"&Hex($alpha,2)&StringRight(Hex(_gdiplus_Bitmapgetpixel($tmpbmp,$x,$y)),6)
_gdiplus_Bitmapsetpixel($bmp,$x,$y,$ncolor)
EndIf
Next
Next
_GDIPlus_BitmapDispose($tmpbmp)
Return $bmp
EndFunc
Func _getnotincolor($bmp,$w,$h)
Local $color,$farben[$w+1][$h+1]
For $x=0 To $w
For $y=0 To $h
$farben[$x][$y]="0x"&Hex(_gdiplus_Bitmapgetpixel($bmp,$x,$y))
Next
Next
$color="0xFF000000"
For $b=0 to 255
For $g=0 to 255
For $r=0 to 255
$isin=0
For $x=0 To $w
For $y=0 To $h
If StringRight($farben[$x][$y],6)=Hex($r,2)&Hex($g,2)&Hex($b,2) Then $isin=1
Next
Next
If $isin=0 Then
$color="0xFF"&Hex($r,2)&Hex($g,2)&Hex($b,2)
ExitLoop 3
EndIf
Next
Next
Next
Return $color
EndFunc
Func _TBmpFromBmp($bmp,$alpha=100,$px=0,$py=0,$width=-1,$height=-1)
If $bmp=0 Then Return 0
Local $w=_GDIPlus_ImageGetWidth($bmp)
Local $h=_GDIPlus_ImageGetHeight($bmp)
If $height<>-1 Then $h=$height
If $width<>-1 Then $w=$width
For $x=$px To $w+$px
For $y=$py To $h+$py
$pixel=_gdiplus_Bitmapgetpixel($bmp,$x,$y)
$hex=Hex($pixel)
$npixel="0x"&Hex($alpha,2)&StringRight($hex,6)
_gdiplus_Bitmapsetpixel($bmp,$x,$y,$npixel)
Next
Next
Return $bmp
EndFunc
Func _TBmpFromBmpDll($bmp,$alpha=100,$altesweg=1)
If $bmp=0 Then Return 0
Local $dat=@TempDir&"\tmp.bmp"
Local $clsid=_GDIPlus_EncodersGetCLSID("BMP")
_GDIPlus_ImageSaveToFileEx($bmp,$dat,$clsid)
If $altesweg=1 Then _GDIPlus_BitmapDispose($bmp)
DllCall("transbitmapx86.dll","none","_BmpToTBmp","str",$dat,"int",$alpha,"str",$dat)
Local $tbmp=_GDIPlus_BitmapCreateFromFile($dat)
Return $tbmp
EndFunc
Func Diashow($img,$mswechsel=1000,$titel="",$x=-1,$y=-1)
If Not IsArray($img) Then Return -1
Local $frames=UBound($img,1)-1
Local $frame=0
Local $timer=TimerInit()
Local $skill
Local $wx,$wy
If $x=-1 Then
$x=_GDIPlus_ImageGetWidth($img[0])
EndIf
If $x>@DesktopWidth Then $x=@DesktopWidth
If $y=-1 Then
$y=_GDIPlus_ImageGetHeight($img[0])
EndIf
if $y>@DesktopHeight-50 Then $y=@DesktopHeight-50
$wx=$x
$wy=$y
Local $gui=GUICreate($titel,$x,$y,Default,Default,BitOR(0x00C00000,0x00080000)) ;bitor($WS_CAPTION,$WS_SYSMENU)
GUISetState(@SW_SHOW,$gui)
Local $gra=_GDIPlus_GraphicsCreateFromHWND($gui)
Local $buffer=_GDIPlus_BitmapCreateFromGraphics($wx,$wy,$gra)
Local $backgra=_GDIPlus_ImageGetGraphicsContext($buffer)
_GDIPlus_GraphicsSetSmoothingMode($backgra,2)
While GUIGetMsg()<>-3 ;$GUI_EVENT_CLOSE
_WinAPI_RedrawWindow($gui, "", "", 1280) ;$RDW_UPDATENOW + $RDW_FRAME
If TimerDiff($timer)-$skill>=$mswechsel Then
$skill=TimerDiff($timer)
$frame+=1
If $frame>$frames Then $frame=0
EndIf
_GDIPlus_GraphicsClear($backgra)
_GDIPlus_GraphicsDrawImageRect($backgra,$img[$frame],0,0,$wx,$wy)
_GDIPlus_GraphicsDrawImageRect($gra,$buffer,0,0,$wx,$wy)
Sleep(10)
WEnd
_GDIPlus_GraphicsDispose($backgra)
_GDIPlus_BitmapDispose($buffer)
_GDIPlus_GraphicsDispose($gra)
GUIDelete($gui)
Return 1
EndFunc
Ich freue mich Kritik, Anregungen, usw.. 
