c/gtk convert structure to the type of GtkWindow

Question

Hello I have structure:

typedef struct _MainWin
{
    GtkWindow parent;
    GtkWidget* scroll;
    GtkWidget* box;
}MainWin;

I created application main window from this structure. Now i need in main window full screen. When i try to call:

gtk_window_fullscree(GTK_WINDOW(mw);

Where mw is object of MainWin i see: **gtk_window_fullscreen: assertion `GTK_IS_WINDOW (window)' fail**ed

How can i lead mw to GtkWindow ?

Thank you

Answer 1

This seems wrong. Your GtkWindow should be a pointer too, and created using gtk_window_new() like any other GTK+ widget. This looks like you're trying to "subclass" the GtkWindow struct, which I don't think you can do like this.

Answer 2

What they did in the Viewnior code that you posted is to make a subclass of GtkWindow. You have copied part of the code to do that properly, but not all of it. You should read the tutorial part of the GObject documentation on how to define new classes. You can find it online here.