1Tk_MainWindow(3)             Tk Library Procedures            Tk_MainWindow(3)
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NAME

8       Tk_MainWindow,  Tk_GetNumMainWindows - functions for querying main win‐
9       dow information
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SYNOPSIS

12       #include <tk.h>
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14       Tk_Window
15       Tk_MainWindow(interp)
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17       int
18       Tk_GetNumMainWindows()
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ARGUMENTS

22       Tcl_Interp *interp (in/out)        Interpreter  associated   with   the
23                                          application.
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DESCRIPTION

28       A  main  window is a special kind of toplevel window used as the outer‐
29       most window in an application.
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31       If interp is  associated  with  a  Tk  application  then  Tk_MainWindow
32       returns  the  application's  main window. If there is no Tk application
33       associated with interp then Tk_MainWindow returns NULL  and  leaves  an
34       error message in interp->result.
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36       Tk_GetNumMainWindows returns a count of the number of main windows cur‐
37       rently open in the process.
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KEYWORDS

41       application, main window
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45Tk                                    7.0                     Tk_MainWindow(3)