cdef extern from "gtk/gtk.h" nogil:

ctypedef void* GtkWidget

cdef GtkWidget* gtk_plug_new(unsigned long socket_id)

cdef void gtk_widget_show(GtkWidget* widget)

ctypedef char* XPointer

ctypedef struct XImage:

int width

int height

int xoffset # number of pixels offset in X direction

int format # XYBitmap, XYPixmap, ZPixmap

char *data # pointer to image data

int byte_order # data byte order, LSBFirst, MSBFirst

int bitmap_unit # quant. of scanline 8, 16, 32

int bitmap_bit_order # LSBFirst, MSBFirst

int bitmap_pad # 8, 16, 32 either XY or ZPixmap

int depth # depth of image

int bytes_per_line # accelerator to next scanline

int bits_per_pixel # bits per pixel (ZPixmap)

unsigned long red_mask # bits in z arrangement

unsigned long green_mask

unsigned long blue_mask

XPointer *obdata

void *funcs

void XDestroyImage(XImage *ximage)

unsigned long XGetPixel(XImage* image, int x, int y)