Public Overloads Sub FillRegion( _
   ByVal hdc As IntPtr, _
   ByVal xform As RasterRegionXForm, _
   ByVal color As RasterColor _
) 

Visual Basic (Usage)	Copy Code
Dim instance As RasterImage Dim hdc As IntPtr Dim xform As RasterRegionXForm Dim color As RasterColor   instance.FillRegion(hdc, xform, color)

public void FillRegion( 
   IntPtr hdc,
   RasterRegionXForm xform,
   RasterColor color
)

public:
void FillRegion( 
   IntPtr hdc,
   RasterRegionXForm^ xform,
   RasterColor color
) 

Parameters

hdc

Windows device context handle where the image is displayed and where the frame is to appear.

xform

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)

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.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference