Sets the blend shape of a linear gradient brush to create a custom blend based on a bell-shaped curve
#include <GDIPlus.au3>
_GDIPlus_LineBrushSetSigmaBlend ( $hLineGradientBrush, $fFocus [, $fScale = 1] )
| $hLineGradientBrush | Pointer to a LinearGradientBrush object |
| $fFocus | Number in the range 0.0 to 1.0 that specifies the position of the ending color |
| $fScale | [optional] Number in the range 0.0 to 1.0 that specifies the percentage of the gradient's ending |
| Success: | True. |
| Failure: | False and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPIP_ERR* see GPIPlusConstants.au3). |
Search GdipSetLineSigmaBlend in MSDN Library.
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
Example()
Func Example()
_GDIPlus_Startup() ;initialize GDI+
Local Const $iWidth = 600, $iHeight = 300, $iBgColor = 0x303030 ;$iBgColor format RRGGBB
Local $hGUI = GUICreate("GDI+ Example (" & @ScriptName & ")", $iWidth, $iHeight) ;create a test GUI
GUISetBkColor($iBgColor, $hGUI) ;set GUI background color
GUISetState(@SW_SHOW)
Local $hGraphics = _GDIPlus_GraphicsCreateFromHWND($hGUI) ;create a graphics object from a window handle
_GDIPlus_GraphicsSetSmoothingMode($hGraphics, $GDIP_SMOOTHINGMODE_HIGHQUALITY) ;sets the graphics object rendering quality (antialiasing)
Local $hBrush = _GDIPlus_LineBrushCreate(0, 0, 0, 280, 0xFFFFFF00, 0xFF0000FF, 1) ;create line brush
_GDIPlus_GraphicsFillRect($hGraphics, 10, 10, 280, 280, $hBrush) ;draw the filled rectangle
_GDIPlus_LineBrushSetSigmaBlend($hBrush, 0.333, .85)
_GDIPlus_GraphicsFillRect($hGraphics, 310, 10, 280, 280, $hBrush) ;draw the filled rectangle
_GDIPlus_GraphicsDrawString($hGraphics, "w/o sigma blend", 14, 14)
_GDIPlus_GraphicsDrawString($hGraphics, "w/ sigma blend", 314, 14)
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
;cleanup GDI+ resources
_GDIPlus_BrushDispose($hBrush)
_GDIPlus_GraphicsDispose($hGraphics)
_GDIPlus_Shutdown()
GUIDelete($hGUI)
EndFunc ;==>Example