On 17/05/2012 04:07, Andy Gilman wrote:
> I am trying to write an extremely simple program, which will be animated by
> showing an image, then redrawing it one pixel over, etc.
>
> I have followed the clock example in the tutorial with the following
> successes:
>
> the image is displayed.
> the timer works
> the timer connects to a function (following the clock example),
>
> But I can't figure out how to redraw the image.
>
> Here is the function that I thought would lead to the image disappearing
> (Header
> is the drawing area):
>
> bool Header::update()
> {
> Glib::RefPtr<Gdk::Window> win = get_window();
> if (win)
> {
> Gdk::Rectangle r(600, 2, 70,70);// this is the rectangle where the image
> is displayed
> win->invalidate_rect(r, false);
> };
> return TRUE;
> }
>
> Thanks for any help.
>
> Andy GilmanHow about just queue_draw()? I'm assuming that the clock example uses the draw signal for drawing. -- Kind regards, Loong Jin
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