LEADTOOLS GDI/GDI+ (Leadtools.Drawing assembly)
LEAD Technologies, Inc

FillRegion(RasterImage,Graphics,RasterRegionXForm,RasterColor) Method






The source image.
Graphics object where the image is displayed and where the frame is to appear.
Leadtools.RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates.
The color value to be XORed with colors within a region to determine the new colors for displaying the region. The color corresponding to a particular part of the region is determined as follows: Region Color Displayed = (color of pixel in region) XOR (crRgnColor)
Highlights a region by displaying a filled, color representation of the region in the given System.Drawing.Graphics object.
Syntax
public static void FillRegion( 
   RasterImage image,
   Graphics graphics,
   RasterRegionXForm xform,
   RasterColor color
)
'Declaration
 
Public Overloads Shared Sub FillRegion( _
   ByVal image As RasterImage, _
   ByVal graphics As Graphics, _
   ByVal xform As RasterRegionXForm, _
   ByVal color As RasterColor _
) 
'Usage
 
Dim image As RasterImage
Dim graphics As Graphics
Dim xform As RasterRegionXForm
Dim color As RasterColor
 
RasterImagePainter.FillRegion(image, graphics, xform, color)
public static void FillRegion( 
   RasterImage image,
   Graphics graphics,
   RasterRegionXForm xform,
   RasterColor color
)
 function Leadtools.Drawing.RasterImagePainter.FillRegion(RasterImage,Graphics,RasterRegionXForm,RasterColor)( 
   image ,
   graphics ,
   xform ,
   color 
)
public:
static void FillRegion( 
   RasterImage^ image,
   Graphics^ graphics,
   RasterRegionXForm^ xform,
   RasterColor color
) 

Parameters

image
The source image.
graphics
Graphics object where the image is displayed and where the frame is to appear.
xform
Leadtools.RasterRegionXForm object that LEADTOOLS uses to translate between display coordinates and image coordinates.
color
The color value to be XORed with colors within a region to determine the new colors for displaying the region. The color corresponding to a particular part of the region is determined as follows: Region Color Displayed = (color of pixel in region) XOR (crRgnColor)
Remarks

This method is particularly useful when displaying regions with black and white images. All black pixels in a region are displayed with color specified by color. and all white pixels are displayed ~(color). For example, suppose that color is light green (BGR 0x80FF40). All black pixels in the region are displayed as color. All white pixels in the region are displayed as 0xFFFFFF XOR 0x80FF40 = 0x7F00BF, which is purple.

For more information refer to RasterImage and GDI/GDI+.

Example
For an example, refer to FrameRegion(RasterImage,Graphics,RasterRegionXForm,Int32).
Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

RasterImagePainter Class
RasterImagePainter Members
Overload List

 

 


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