CODEWITHSUNDEEP
gtkgtk2
sandun dhammika
sandun dhammika

Reputation: 921

How to find when GtkWidget was validated in Gtk+2

I need to know when a GtkWidget was redrawn and validated after I change it's content (schedule a redraw).

Is anyway to get whether it's redrawn complete or need to wait more to get redrawn.

Upvotes: 0

Views: 42

Answers (1)

user6943963
user6943963

Reputation:

The way to get around what you need is to delay the scroll until GTK knowns how big the scroll area is. Probably the easiest way is to use g_idle_add(). Call-backs added to it will be executed in priority order when there are no other tasks needed to be done. GTK does use the idle functions at a high priority to do its redraws, but a default priority should be OK for you.

gboolena my_delayed_function(gpointer user_data)
{
    // The function that does the scroll goes here.

    return FALSE;
}

void my_function_that_shows_something()
{
    // Do some drawing.

    // ...

    // Schedule a scroll.
    g_idle_add(my_delayed_function, NULL);
}

As a note you must return FALSE from that call-back otherwise it will be called repeatedly.

Upvotes: 1

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