Re: Get position of cursor in widget?

[Cédric Lucantis <omer no-log org>]

Le lundi 16 juillet 2007 12:50, charlesvpacker a écrit :
> I'm a GTK newbie who has successfully taken the very first
> steps toward building a custom image processing application.
> I've figured out how to read and display an image using
> a GtkImage and GtkPixbuf. I've also modified a block of pixels
> in the existing pixbuf and updated the displayed image
> via gtk_image_set_from_pixbuf. Now I want to get the pixel
> position of the mouse cursor resting on the image. I don't recall
> seeing a GTK tutorial on capturing pointer position or motion.
> Could somebody, um, point me to one?

If you want this from within a mouse event handler, you can use the 
(x,y) and (x_root,y_root) members provided by all the mouse event 
types. The first pair gives the position of the mouse relative to the 
event window and the second the position relative to the screen origin. 

If you're not in a handler, you still have gdk_window_get_pointer() and 
gdk_display_get_pointer(). See the Gdk reference manual for more infos 
(sections 'Event structures', 'Windows' and 'Display').

-- 
Cédric Lucantis