Function Reference


_GDIPlus_LineBrushSetColors

Sets the starting color and ending color of a linear gradient brush

#include <GDIPlus.au3>
_GDIPlus_LineBrushSetColors ( $hLineGradientBrush, $iARGBStart, $iARGBEnd )

Parameters

$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

Return Value

Success: True.
Failure: False and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPID_ERR*).

Related

_GDIPlus_LineBrushGetColors

See Also

Search GdipSetLineColors in MSDN Library.

Example

#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