Example #1
        /// <summary>
        /// Presents the contents of the next buffer in the sequence of back buffers to the screen.
        /// </summary>
        /// <param name="flags">The flags.</param>
        /// <param name="sourceRectangle">The area of the back buffer that should be presented.</param>
        /// <param name="destinationRectangle">The area of the front buffer that should receive the result of the presentation.</param>
        /// <param name="windowOverride">The destination window whose client area is taken as the target for this presentation.</param>
        /// <param name="region">Specifies a region on the back buffer that contains the minimal amount of pixels that need to be updated.</param>
        /// <unmanaged>HRESULT IDirect3DSwapChain9::Present([In, Optional] const void* pSourceRect,[InOut, Optional] const void* pDestRect,[In] HWND hDestWindowOverride,[In] const RGNDATA* pDirtyRegion,[In] unsigned int dwFlags)</unmanaged>
        public void Present(Present flags, Rectangle sourceRectangle, Rectangle destinationRectangle, IntPtr windowOverride, System.Drawing.Region region)
                var graphics = System.Drawing.Graphics.FromHwnd(windowOverride);
                var regionPtr = region.GetHrgn(graphics);

                var srcPtr = IntPtr.Zero;
                if (sourceRectangle != Rectangle.Empty)
                    srcPtr = new IntPtr(&sourceRectangle);

                var destPtr = IntPtr.Zero;
                if (destinationRectangle != Rectangle.Empty)
                    destPtr = new IntPtr(&destinationRectangle);

                Present(srcPtr, destPtr, windowOverride, regionPtr, (int)flags);
Example #2
 public void SetRegion(System.Drawing.Graphics graphics, System.Drawing.Region region)
     hRgnBlur = region.GetHrgn(graphics);
     dwFlags |= BlurBehindFlags.BlurRegion;