Tcl8.5.7/Tk8.5.7 Documentation > TkLib > MainWin

Tcl/Tk Applications | Tcl Commands | Tk Commands | Tcl Library | Tk Library

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.

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