GTK+ Forums

pradee · Joined: 15 Jun 2007 Posts: 3

hi i have to read a file and update the window based on the file? is there any fucntion that will be called when window is in open

openldev · Posted: Fri Jun 15, 2007 8:52 pm Post subject:

If you mean you want to run a function every time the window is shown, use GtkWidget's "show" signal.

pradee · Joined: 15 Jun 2007 Posts: 3

i am new to gtk. i dont know how to use this. pls explain me

openldev · Posted: Sun Jun 17, 2007 12:54 pm Post subject:

You can use this to connect your window to the show signal:

Code: (Plaintext)
1	g_signal_connect (G_OBJECT (window), "show", G_CALLBACK (window_is_visible), (gpointer) data);

The first parameter is the widget that you want to monitor for the "show" signal. When the window is shown to the user, window_is_visible() will be called. The fourth parameter allows you to send one pointer to the callback function, or NULL to ignore it. The callback function should look like this:

Code: (Plaintext)
1 2 3 4	void window_is_visible (GtkWindow window, gpointer data) { / Do something now that the window is shown. */ }

Hope this helps!