private void CopyCommon(RenderTargetBitmap sourceBitmap) { _bitmapInit.BeginInit(); _pixelWidth = sourceBitmap._pixelWidth; _pixelHeight = sourceBitmap._pixelHeight; _dpiX = sourceBitmap._dpiX; _dpiY = sourceBitmap._dpiY; _format = sourceBitmap._format; // // In order to make a deep clone we need to // create a new bitmap with the contents of the // existing bitmap and then create a render target // from the new bitmap. // using (FactoryMaker myFactory = new FactoryMaker()) { // Create an IWICBitmap BitmapSourceSafeMILHandle newBitmapHandle = BitmapSource.CreateCachedBitmap( null, WicSourceHandle, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.OnLoad, null); lock (_syncObject) { WicSourceHandle = newBitmapHandle; } // Now create a Render target from that Bitmap HRESULT.Check(UnsafeNativeMethods.MILFactory2.CreateBitmapRenderTargetForBitmap( myFactory.FactoryPtr, newBitmapHandle, out _renderTargetBitmap )); } _bitmapInit.EndInit(); }