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