NAME

       Tk_MainWindow, Tk_GetNumMainWindows - functions for query­
       ing 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
       interp->result.

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



KEYWORDS

       application, main window