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

21       Tcl_Interp *interp (in/out)        Interpreter associated with the  ap‐
22                                          plication.
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DESCRIPTION

26       A  main  window is a special kind of toplevel window used as the outer‐
27       most window in an application.
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29       If interp is associated with a Tk application  then  Tk_MainWindow  re‐
30       turns  the application's main window. If there is no Tk application as‐
31       sociated with interp then Tk_MainWindow returns NULL and leaves an  er‐
32       ror message in interpreter interp's result.
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34       Tk_GetNumMainWindows returns a count of the number of main windows cur‐
35       rently open in the current thread.
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KEYWORDS

38       application, main window
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42Tk                                    7.0                     Tk_MainWindow(3)