public static extern XImagePtr XCreateImage(
DisplayPtr display,
VisualPtr visual,
uint depth,
XImageFormat format,
int offset,
IntPtr data,
uint width,
uint height,
int bitmap_pad,
int bytes_per_line
);
public static extern XImagePtr XGetSubImage(
DisplayPtr display,
Drawable d,
int x,
int y,
uint width,
uint height,
ulong plane_mask,
XImageFormat format,
XImagePtr dest_image,
int dest_x,
int dest_y
);
