Public Overloads Sub PaintRegionBuffer( _
   ByVal hdc As IntPtr, _
   ByVal srcRect As Rectangle, _
   ByVal srcClipRect As Rectangle, _
   ByVal destRect As Rectangle, _
   ByVal destClipRect As Rectangle, _
   ByVal buffer() As Byte, _
   ByVal bufferOffset As Integer, _
   ByVal row As Integer, _
   ByVal count As Integer, _
   ByVal properties As RasterPaintProperties _
) 

Visual Basic (Usage)

Copy Code

Dim instance As RasterImage Dim hdc As IntPtr Dim srcRect As Rectangle Dim srcClipRect As Rectangle Dim destRect As Rectangle Dim destClipRect As Rectangle Dim buffer() As Byte Dim bufferOffset As Integer Dim row As Integer Dim count As Integer Dim properties As RasterPaintProperties   instance.PaintRegionBuffer(hdc, srcRect, srcClipRect, destRect, destClipRect, buffer, bufferOffset, row, count, properties)

public void PaintRegionBuffer( 
   IntPtr hdc,
   Rectangle srcRect,
   Rectangle srcClipRect,
   Rectangle destRect,
   Rectangle destClipRect,
   byte[] buffer,
   int bufferOffset,
   int row,
   int count,
   RasterPaintProperties properties
)

public:
void PaintRegionBuffer( 
   IntPtr hdc,
   Rectangle srcRect,
   Rectangle srcClipRect,
   Rectangle destRect,
   Rectangle destClipRect,
   array<byte>^ buffer,
   int bufferOffset,
   int row,
   int count,
   RasterPaintProperties properties
) 

Parameters

hdc

The destination Windows device context handle where the image data will be displayed.

srcRect

A Rectangle object that specifies the part of the image to use as the display source.

The coordinates in the srcRect rectangle are relative to the image. You can pass Rectangle.Empty to use the default, which matches the image.

srcClipRect

A Rectangle object specifies the portion of the display source to paint. Generally, this is used for updating the display when part of the source image has changed.

The coordinates in the srcClipRect rectangle are relative to the image. You can pass Rectangle.Empty to use the default, which matches the image

destRect

A Rectangle object that determines how the source rectangle is scaled and how the image is positioned in the destination hdc handle.

The coordinates in the destRect object are relative to the hdc handle. There is no default for this parameter. You must specify the Rectangle object.

destClipRect

A Rectangle object that specifies the portion of the display rectangle to paint. Generally, this is used for updating changes in the display surface, such as when a user moves another window, uncovering a part of the image that had been covered up.

The coordinates in the destClipRect are relative to the device context handle. You can pass Rectangle.Empty to use the default, which matches the device context handle. In most cases, however, you should use the rectangle returned by the .NET PaintEventArgs.ClipRectangle or Windows WM_PAINT message.

buffer

The buffer that contains the image data to paint

bufferOffset

Offset into buffer where the data starts.

row

The first row to paint. The painted portion of any row may be limited by the rectangle parameters.

count

The number of rows to paint. The painted portion of any row may be limited by the rectangle parameters.

If the image data in buffer is compressed 1-bit data, you can specify the number of lines as a negative value (-lines), as explained in Speeding Up 1-Bit Documents.

properties

Options for the display.

This method works the same as PaintBuffer, except that only the image region is painted

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

Reference