byte[] GenerateByteArrayFromBitmapHandle(IntPtr bitmapHandle)
{
var bitmap = new IconNativeApi.BITMAP();
AllocateBitmapSpace(bitmapHandle, ref bitmap);
try
{
FillBitmapBitsIntoHandle(bitmap);
var bitmapSource = CreateBitmapSourceFromHandle(bitmapHandle, bitmap);
return imagePersistenceService.ConvertBitmapSourceToByteArray(bitmapSource);
}
finally
{
iconNativeApi.DeleteObject(bitmapHandle);
}
}
byte[] GenerateByteArrayFromBitmapHandle(IntPtr bitmapHandle)
{
var bitmap = new IconNativeApi.BITMAP();
AllocateBitmapSpace(bitmapHandle, ref bitmap);
try
{
FillBitmapBitsIntoHandle(bitmap);
var bitmapSource = CreateBitmapSourceFromHandle(bitmapHandle, bitmap);
return(imagePersistenceService.ConvertBitmapSourceToByteArray(bitmapSource));
}
finally
{
iconNativeApi.DeleteObject(bitmapHandle);
}
}
static BitmapSource CreateBitmapSourceFromHandle(IntPtr bitmapHandle, IconNativeApi.BITMAP bitmap)
{
var bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(
bitmapHandle,
IntPtr.Zero,
new Int32Rect(
0,
0,
bitmap.Width,
bitmap.Height),
BitmapSizeOptions
.FromWidthAndHeight(
bitmap
.Width,
bitmap
.Height));
bitmapSource.Freeze();
return(bitmapSource);
}
void AllocateBitmapSpace(IntPtr bitmapHandle, ref IconNativeApi.BITMAP bitmap)
{
var bufferSize = Marshal.SizeOf(bitmap);
iconNativeApi.GetObject(bitmapHandle, bufferSize, out bitmap);
}
static void FillBitmapBitsIntoHandle(IconNativeApi.BITMAP bitmap)
{
var bytes = new byte[bitmap.WidthBytes * bitmap.Height];
Marshal.Copy(bitmap.Bits, bytes, 0, bytes.Length);
}
