[Glade-users] Checking if a window exists

[Olexiy Avramchenko]

Alef T Veld wrote:

>I'm trying to check if a window is visible on the screen. This because i'm using one function
>for both the main screen buttons and the buttons in the window that displays once one pushes
>the buttons on the main screen.
>
You can check mapped flag of widget (window or button or any other GTK+ 
widget):
http://developer.gnome.org/doc/API/gtk/GtkWidget.html#GTK-WIDGET-MAPPED-CAPS

>I thought of something like this:
>
>Window w;
>
>        /* Check if the window already exists. If it does, we
>        skip this and parse the data, else we realize the widget */
>        if((w=GDK_WINDOW_XWINDOW(GTK_WIDGET(app1)->window1))==NULL) {
>
In this line you can check whether app1 is realized (realized widget may 
be hidden by gtk_widget_hide() function, so you'll not see it on 
screen). The same check (but more portable) you can do with:
http://developer.gnome.org/doc/API/gtk/GtkWidget.html#GTK-WIDGET-REALIZED-CAPS

>but it doesn't work. What would be a good way to do this. Also, if one wants to change
>the property set in the xml file, for example, Visible=True, how does one change that
>in the code?
>  
>
gtk_widget_show() call:
http://developer.gnome.org/doc/API/gtk/GtkWidget.html#gtk-widget-show

    Olexiy