Let Qt keep track of top-level windows.

glabels/File.cpp

@@ -204,8 +204,11 @@ void File::close( MainWindow *window )
 ///
 void File::exit()
 {
-	foreach ( MainWindow* window, MainWindow::windowList() )
+	foreach ( QWidget* qwidget, QApplication::topLevelWidgets() )
+	{
+		if ( MainWindow* window = qobject_cast<MainWindow*>(qwidget) )
 		{
 			window->close();
 		}
+	}
 }

glabels/MainWindow.cpp

@@ -52,12 +52,6 @@
 #include "Help.h"
 
 
-///
-/// Static window list
-///
-QList<MainWindow*> MainWindow::smWindowList;
-
-
 ///
 /// Constructor
 ///
@@ -146,8 +140,6 @@ MainWindow::MainWindow()
 #endif
 
 	readSettings();
-
-	smWindowList.push_back( this );
 }
 
 
@@ -156,7 +148,6 @@ MainWindow::MainWindow()
 ///
 MainWindow::~MainWindow()
 {
-	smWindowList.removeOne( this );
 }
 
 
@@ -208,14 +199,6 @@ bool MainWindow::isEmpty() const
 	return mModel == 0;
 }
 
-///
-/// Get window list
-///
-QList<MainWindow*> MainWindow::windowList()
-{
-	return smWindowList;
-}
-
 
 ///
 /// Close Event Handler

glabels/MainWindow.h

@@ -70,8 +70,6 @@ public:
 	void setModel( LabelModel* label );
 	bool isEmpty() const;
 
-	static QList<MainWindow *> windowList();
-
 
 	/////////////////////////////////////
 	// Events
@@ -186,8 +184,6 @@ private:
 	// Private Data
 	/////////////////////////////////////
 private:
-	static    QList<MainWindow*> smWindowList;
-
 	QMenu*    fileMenu;
 	QMenu*    editMenu;
 	QMenu*    viewMenu;