[cairo] How to draw Cairo graphic in a Motif drawing widget

[Adam Jackson]

On Tue, 2016-05-10 at 16:54 +0000, George Wu wrote:

>     dpy = XtDisplay(draw);
>     win = XtWindow(draw);

win is 0 here, which isn't a valid ID, so...

>     sfc = cairo_xlib_surface_create(dpy, win, DefaultVisual(dpy, scrnum),
> Width, Height);

... this creates an invalid surface.

Now, why win is zero, I couldn't say.

- ajax