public HRESULT CreateBitmap(uint uiWidth, uint uiHeight, [NativeTypeName("REFWICPixelFormatGUID")] Guid *pixelFormat, WICBitmapCreateCacheOption option, IWICBitmap **ppIBitmap)
 {
     return(((delegate * unmanaged[Stdcall] < IWICImagingFactory2 *, uint, uint, Guid *, WICBitmapCreateCacheOption, IWICBitmap **, int >)(lpVtbl[17]))((IWICImagingFactory2 *)Unsafe.AsPointer(ref this), uiWidth, uiHeight, pixelFormat, option, ppIBitmap));
 }
 public int CreateBitmapFromSource(IWICBitmapSource *pIBitmapSource, WICBitmapCreateCacheOption option, IWICBitmap **ppIBitmap)
 {
     return(((delegate * unmanaged <IWICImagingFactory2 *, IWICBitmapSource *, WICBitmapCreateCacheOption, IWICBitmap **, int>)(lpVtbl[18]))((IWICImagingFactory2 *)Unsafe.AsPointer(ref this), pIBitmapSource, option, ppIBitmap));
 }