Re: Drawing area feature?

[CALMELS Clement <calmels_clement stna dgac fr>]

Thanks for your explanation but I will appreciate more details.

> Use a double buffer and draw your objects in the back buffer,
> (exactly as in a normal draw), each object with a different color.
> Then you just have to compare the color of the pixel where the
> user clicked with the color of the objects, to see which one
> was selected.

I know the gdk_image_get_pixel function but it applies on a GdkImage. I
can build the GdkImage with something like that:
gdk_image_get(  widget->window,
                event->button.x,
                event->button.y, 1, 1);
Where widget is the drawing area. But I don't find a way to retrieve the
pixel color on a GdkPixmap (the back buffer). A clue?

Clement.