Tk_MainWindow(3)

NAME
Tk_MainWindow, Tk_GetNumMainWindows - functions for querying main window information

SYNOPSIS
#include <tk.h>

Tk_Window
Tk_MainWindow(interp)

int
Tk_GetNumMainWindows()

ARGUMENTS
Interpreter associated with the application.

DESCRIPTION

A main window is a special kind of toplevel window used as the outermost window in an application.

If interp is associated with a Tk application then Tk_MainWindow returns the application's main window. If there is no Tk application associated with interp then Tk_MainWindow returns NULL and leaves an error message in interpreter interp's result.

Tk_GetNumMainWindows returns a count of the number of main windows currently open in the current thread.

KEYWORDS
application, main window