## Tcl8.6.17/Tk8.6.17 Documentation > Tk C API > MainWin

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### NAME

Tk_MainWindow, Tk_GetNumMainWindows — 主の窓の情報を聞く為の函数　　functions for querying main window information

### SYNOPSIS

#include <tk.h>
Tk_Window
Tk_MainWindow(interp)
int
Tk_GetNumMainWindows()

### 引数 ARGUMENTS

Tcl_Interp *interp (入出力in/out)
  応用譜に関連する解釈実行機能｡ Interpreter associated with the application.

### 説明 DESCRIPTION

主窓は応用譜内の最も外の窓として使われる特別な種類の頂上水準窓である｡ A main window is a special kind of toplevel window used as the outermost window in an application.

もし interp が Tk 応用譜と結合している場合､ Tk_MainWindow は応用譜の主の窓を返す｡もし interp に結合した Tk 応用譜がない場合､Tk_MainWindow は NULL を返し､解釈実行機能の結果の中に不都合伝言文が残される｡ 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 は現在の時分割片内に開かれている主窓の数の計数を返す｡ Tk_GetNumMainWindows returns a count of the number of main windows currently open in the current thread.

### KEYWORDS

application, main window
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