enum TernaryRasterOperations : uint {

Enum TernaryRasterOperations As UInteger

   int nHeight, IntPtr hObjSource, int nXSrc, int nYSrc,  TernaryRasterOperations dwRop);    

static extern bool BitBlt([In] IntPtr hdc, int nXDest, int nYDest, int nWidth, int nHeight, [In] IntPtr hdcSrc, int nXSrc, int nYSrc, TernaryRasterOperations dwRop);

Private Shared Function BitBlt(ByVal hdc As IntPtr, ByVal nXDest As Integer, ByVal nYDest As Integer, ByVal nWidth As Integer, ByVal nHeight As Integer, ByVal hdcSrc As IntPtr, ByVal nXSrc As Integer, ByVal nYSrc As Integer, ByVal dwRop As TernaryRasterOperations) As Boolean

TernaryRasterOperations

   int nHeight, IntPtr hObjSource, int nXSrc, int nYSrc,  TernaryRasterOperations dwRop);    

public enum TernaryRasterOperations : uint {

    BitBlt(pTarget, 0,0, bmp.Width, bmp.Height, pSource,0,0,TernaryRasterOperations.SRCCOPY);

static extern bool PatBlt(IntPtr hdc, int nXLeft, int nYLeft, int nWidth, int nHeight, TernaryRasterOperations dwRop);

Private Shared Function PatBlt(hdc As IntPtr, nXLeft As Integer, nYLeft As Integer, nWidth As Integer, nHeight As Integer, dwRop As TernaryRasterOperations) As Boolean

TernaryRasterOperations

    TernaryRasterOperations dwRop );

Private Shared Function StretchBlt(hdcDest As IntPtr, nXOriginDest As Integer, nYOriginDest As Integer, nWidthDest As Integer, nHeightDest As Integer, hdcSrc As IntPtr, nXOriginSrc As Integer, nYOriginSrc As Integer, nWidthSrc As Integer, nHeightSrc As Integer, dwRop As TernaryRasterOperations) As Boolean

TernaryRasterOperations

                    0,0,bmp.Width,  bmp.Height,TernaryRasterOperations.SRCCOPY);

            TernaryRasterOperations dwRop );

        public enum TernaryRasterOperations