Creates a Bitmap object based on a Graphics object, a width, and a height
#include <GDIPlus.au3>
_GDIPlus_BitmapCreateFromGraphics ( $iWidth, $iHeight, $hGraphics )
| $iWidth | Specifies the width, in pixels, of the bitmap |
| $iHeight | Specifies the height, in pixels, of the bitmap |
| $hGraphics | Handle to a Graphics object |
| Success: | a handle to a Bitmap object Q . |
| Failure: | 0 and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPIP_ERR* see GPIPlusConstants.au3). |
When you are done with the Bitmap object, call _GDIPlus_BitmapDispose() to release the resources.
Search GdipCreateBitmapFromGraphics in MSDN Library.
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
Global $g_hGUI, $g_hBrush, $g_hGfx, $g_hGfxCtxt, $g_hBitmap
Example()
Func Example()
AutoItSetOption("GUIOnEventMode", 1)
_GDIPlus_Startup() ;initialize GDI+
Local Const $iWidth = 600, $iHeight = 600, $iBgColor = 0x303030 ;$iBGColor format RRGGBB
$g_hGUI = GUICreate("GDI+ Example (" & @ScriptName & ")", $iWidth, $iHeight) ;create a test GUI
GUISetBkColor($iBgColor, $g_hGUI) ;set GUI background color
GUISetState(@SW_SHOW)
;create buffered graphics frame set for smoother gfx object movements
$g_hGfx = _GDIPlus_GraphicsCreateFromHWND($g_hGUI) ;create a graphics object from a window handle
$g_hBitmap = _GDIPlus_BitmapCreateFromGraphics($iWidth, $iHeight, $g_hGfx) ;create a Bitmap object based on a graphics object
$g_hGfxCtxt = _GDIPlus_ImageGetGraphicsContext($g_hBitmap) ;get the graphics context of the image / bitmap to draw on image / bitmap
_GDIPlus_GraphicsSetSmoothingMode($g_hGfxCtxt, $GDIP_SMOOTHINGMODE_HIGHQUALITY) ;sets the graphics object rendering quality (antialiasing)
$g_hBrush = _GDIPlus_BrushCreateSolid(0xFF8080FF) ;create a solid Brush object
GUISetOnEvent($GUI_EVENT_CLOSE, "_Exit")
Local Const $iDeg = ACos(-1) / 180 ;ACos(-1) is nearly pi
Local $iSize = 50, $iX_Center = ($iWidth - $iSize) / 2, $iY_Center = ($iHeight - $iSize) / 2, $iXPos, $iYPos, $iAngle = 0
Local Const $iDots = 16, $iAngelDist = 360 / $iDots, $iRadius = 200
Do
_GDIPlus_GraphicsClear($g_hGfxCtxt, 0xFF000000 + $iBgColor) ;clear bitmap with given color (AARRGGBB format)
For $i = 1 To $iDots
$iXPos = $iX_Center + Cos($iAngle * $iDeg) * $iRadius
$iYPos = $iY_Center + Sin($iAngle * $iDeg) * $iRadius
_GDIPlus_GraphicsFillEllipse($g_hGfxCtxt, $iXPos, $iYPos, $iSize, $iSize, $g_hBrush) ;draw dots in a circle
$iAngle += $iAngelDist ;increase angle to next dot
Next
$iAngle += 1 ;increase overall angle
_GDIPlus_GraphicsDrawImageRect($g_hGfx, $g_hBitmap, 0, 0, $iWidth, $iHeight) ;copy drawn bitmap to GUI
Until Not Sleep(20) ;Sleep() always returns 1 and Not 1 is 0
EndFunc ;==>Example
Func _Exit() ;cleanup GDI+ resources
_GDIPlus_BrushDispose($g_hBrush)
_GDIPlus_GraphicsDispose($g_hGfxCtxt)
_GDIPlus_GraphicsDispose($g_hGfx)
_GDIPlus_BitmapDispose($g_hBitmap)
_GDIPlus_Shutdown()
GUIDelete($g_hGUI)
Exit
EndFunc ;==>_Exit