Sets the starting color and ending color of a linear gradient brush
#include <GDIPlus.au3>
_GDIPlus_LineBrushSetColors ( $hLineGradientBrush, $iARGBStart, $iARGBEnd )
| $hLineGradientBrush | Pointer to a LinearGradientBrush object |
| $iARGBStart | Alpha, Red, Green and Blue components of the starting color |
| $iARGBEnd | Alpha, Red, Green and Blue components of the ending color |
| Success: | True. |
| Failure: | False and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPIP_ERR* see GPIPlusConstants.au3). |
None.
Suche nach GdipSetLineColors in der MSDN Bibliothek.
#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
Example()
Func Example()
_GDIPlus_Startup() ;initialize GDI+
Local Const $iWidth = 600, $iHeight = 600, $iBgColor = 0x303030 ;$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, 280, 570, 0xFFFFFF00, 0xFF4020FF, 1) ;create linear gradient flipped brush
Local $aBlends[5][2]
$aBlends[0][0] = 4 ; Using 4 factors and position
$aBlends[1][0] = 0 ; Factor
$aBlends[1][1] = 0 ; Position
$aBlends[2][0] = 1 ; The percentage of the blending is 100% (red to green is gradually completed in just 20% from the left)
$aBlends[2][1] = 0.2 ; The distance percentage from the left boundary of the brush is 20%
$aBlends[3][0] = 0 ; The percentage of the blending is 0% (green to red is gradually completed from 20% to 70% from the left)
$aBlends[3][1] = 0.7 ; The distance percentage from the left boundary of the brush is 70%
$aBlends[4][0] = 1 ; The percentage of the blending is 100% (red to green is gradually completed from 70% to 100% from the left)
$aBlends[4][1] = 1 ; The distance percentage from the left boundary of the brush is 100%
_GDIPlus_LineBrushSetBlend($hBrush, $aBlends); set the linear gradient brush color positions and factors
_GDIPlus_GraphicsFillEllipse($hGraphics, 100, 50, 380, 500, $hBrush) ;draw the egg
Sleep(2000)
_GDIPlus_GraphicsClear($hGraphics, 0xFF000000 + $iBgColor) ;clear bitmap
_GDIPlus_LineBrushSetColors($hBrush, 0xFFFFFFFF, 0xFF000000) ;change the color values to greyscale
_GDIPlus_GraphicsFillEllipse($hGraphics, 100, 50, 380, 500, $hBrush) ;draw the egg again
Do
Until GUIGetMsg() = $GUI_EVENT_CLOSE
;cleanup GDI+ resources
_GDIPlus_BrushDispose($hBrush)
_GDIPlus_GraphicsDispose($hGraphics)
_GDIPlus_Shutdown()
GUIDelete($hGUI)
EndFunc ;==>Example