public unsafe static Bitmap ConvertPixelByPixel(IntPtr ipd)
{
ThumbnailGenerator.DIBSECTION dIBSECTION = default(ThumbnailGenerator.DIBSECTION);
ThumbnailGenerator.GetObjectDIBSection(ipd, Marshal.SizeOf(dIBSECTION), ref dIBSECTION);
int bmWidth = dIBSECTION.dsBm.bmWidth;
int bmHeight = dIBSECTION.dsBm.bmHeight;
Bitmap result;
if (bmWidth <= 0 || bmHeight <= 0)
{
result = null;
}
else
{
FastBitmap fastBitmap = new FastBitmap(bmWidth, bmHeight);
fastBitmap.LockBitmap();
ThumbnailGenerator.RGBQUAD *ptr = (ThumbnailGenerator.RGBQUAD *)((void *)dIBSECTION.dsBm.bmBits);
for (int i = 0; i < dIBSECTION.dsBmih.biWidth; i++)
{
for (int j = 0; j < dIBSECTION.dsBmih.biHeight; j++)
{
int num = j * dIBSECTION.dsBmih.biWidth + i;
if (ptr[num].rgbReserved != 0)
{
fastBitmap.SetPixel(i, j, ptr[num].rgbReserved, ptr[num].rgbRed, ptr[num].rgbGreen, ptr[num].rgbBlue);
}
}
}
fastBitmap.UnlockBitmap();
result = fastBitmap;
}
return(result);
}
public static extern int GetObjectDIBSection(IntPtr hObject, int nCount, ref ThumbnailGenerator.DIBSECTION lpObject);