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Delphi

public
  procedure UnlockBits( const Data: TRSGPBitmapData ); virtual;
 

LockBits and UnlockBits must be used as a pair. A call to the LockBits method of a Bitmap object establishes a temporary buffer that you can use to read or write pixel data in a specified format. After you write to the temporary buffer, a call to UnlockBits copies the pixel data in the buffer to the Bitmap object. If the pixel format of the temporary buffer is different from the pixel format of the Bitmap object, the pixel data is converted appropriately.

Reference

•RSGdiPlusGraphics.TRSGPBitmap.LockBits(TRectF,TRSGPImageLockFlags,TRSGPPixelFormatRec,TRSGPBitmapData)

•TRSGPBitmap

•RSGdiPlusGraphics