Can gdk image attach to a window?

[Binary Chen <binary chen gmail com>]

Hi,

I am writing a video player using a commercial codec library. The
library will callback my function when one frame of video has been
decoded. The decoded frame is placed in a memory which is set by me. And
the callback is started in another thead different from main thread.

I know xlib has big problem when using in multi threaded environment. So
I can't update a widget that is created in main thread.

The problem comes, if I create all the widget in main thread, then I
can't manipulate the widget in the callback.

So GdkImage helps me, because I can tell the library to put the decoded
bitmap in GdkImage->mem. But how can GdkImage draw to screen
automatically? I only know I can use gdk_draw_image to draw a GdkImage
to a drawing area, this means I need to call this function in main
thread to display the GdkImage, damn!!

Is there any better way? I think if I can "attach" a GdkImage to a
widget then the problem resolved.

Thanks.
Bin