public static unsafe int SetDIBitsToDevice(IntPtr hdc, int xDest, int yDest, uint
dwWidth, uint dwHeight, int xSrc, int ySrc, uint uStartScan, uint cScanLines,
byte[] lpvBits, ref BitmapInfoHeader bitmapInfoHeader, DibBmiColorUsageFlag fuColorUse)
{
fixed(BitmapInfoHeader *bitmapInfoHeaderPtr = &bitmapInfoHeader)
{
return(Gdi32Methods.SetDIBitsToDevice(hdc, xDest, yDest,
dwWidth, dwHeight, xSrc, ySrc, uStartScan, cScanLines, lpvBits, new IntPtr(bitmapInfoHeaderPtr),
fuColorUse));
}
}
public static int SetDIBitsToDevice(IntPtr hdc, int xDest, int yDest, uint
dwWidth, uint dwHeight, int xSrc, int ySrc, uint uStartScan, uint cScanLines,
byte[] lpvBits, ref BitmapInfo bitmapInfo, DibBmiColorUsageFlag fuColorUse)
{
using (var pbmi = BitmapInfo.NativeAlloc(ref bitmapInfo))
{
return(Gdi32Methods.SetDIBitsToDevice(hdc, xDest, yDest,
dwWidth, dwHeight, xSrc, ySrc, uStartScan, cScanLines, lpvBits, pbmi.GetDangerousHandle(),
fuColorUse));
}
}
public static unsafe int SetRgbBitsToDevice(IntPtr hdc, int width, int height, IntPtr pixelBufferPtr,
int xSrc = 0,
int ySrc = 0, int xDest = 0, int yDest = 0, bool isRgba = true, bool isImageTopDown = true)
{
var bi = new BitmapInfoHeader
{
Size = (uint)Marshal.SizeOf <BitmapInfoHeader>(),
Width = width,
Height = isImageTopDown ? -height : height,
CompressionMode = BitmapCompressionMode.BI_RGB,
BitCount = isRgba ? (ushort)32 : (ushort)24,
Planes = 1
};
return(Gdi32Methods.SetDIBitsToDevice(hdc, xDest, yDest, (uint)width, (uint)height, xSrc, ySrc, 0,
(uint)height, pixelBufferPtr, new IntPtr(&bi),
DibBmiColorUsageFlag.DIB_RGB_COLORS));
}