internal static GifPropertyItem[] ConvertFromMemory(IntPtr propdata, int count) { var props = new GifPropertyItem[count]; for (var i = 0; i < count; i++) { GifPropertyItemInternal propcopy = null; try { propcopy = (GifPropertyItemInternal)ExternDllHelper.PtrToStructure(propdata, typeof(GifPropertyItemInternal)); props[i] = new GifPropertyItem { Id = propcopy.id, Len = propcopy.len, Type = propcopy.type, Value = propcopy.Value }; // this calls Marshal.Copy and creates a copy of the original memory into a byte array. propcopy.value = IntPtr.Zero; // we dont actually own this memory so dont free it. } finally { propcopy?.Dispose(); } propdata = (IntPtr)((long)propdata + Marshal.SizeOf(typeof(GifPropertyItemInternal))); } return(props); }
private void GetBitmapSource() { var handle = IntPtr.Zero; try { handle = GetHbitmap(); Source = Imaging.CreateBitmapSourceFromHBitmap(handle, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); } catch { // ignored } finally { if (handle != IntPtr.Zero) { ExternDllHelper.DeleteObject(handle); } } }