mainwin(3Tk)

NAME
     Tk_MainWindow - find the main window for an application

SYNOPSIS
     #include <tk.h>

     Tk_Window
     Tk_MainWindow(interp)

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


DESCRIPTION
     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.


KEYWORDS
     application, main window