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Tk_MainWindow(3)             Tk Library Procedures            Tk_MainWindow(3)

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NAME
       Tk_MainWindow, Tk_GetNumMainWindows - functions for querying main
       window information

SYNOPSIS
       #include <tk.h>

       Tk_Window
       Tk_MainWindow(interp)

       int
       Tk_GetNumMainWindows()

ARGUMENTS
       Tcl_Interp *interp (in/out)        Interpreter associated with the
                                          application.
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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

Tk                                    7.0                     Tk_MainWindow(3)