Changeset 858 for trunk/source/interfaces/basic

Timestamp:

Oct 2, 2008, 10:29:48 AM (16 years ago)

Author:

garnier

Message:

protection against no scene + Qapp could be now get on external app

File:

• trunk/source/interfaces/basic/src/G4UIQt.cc (modified) (2 diffs)

trunk/source/interfaces/basic/src/G4UIQt.cc

@@ -30 +30 @@
 // L. Garnier
 
-//define GEANT4_QT_DEBUG
+//#define GEANT4_QT_DEBUG
 
 #ifdef G4UI_BUILD_QT_SESSION
@@ -113 +113 @@
   if(UI!=NULL) UI->SetSession(this);
 
+  // Check if already define in external app QMainWindow
+  bool found = false;
+#if QT_VERSION < 0x040000
+  // theses lines does nothing exept this one "GLWindow = new QDialog(0..."
+  // but if I comment them, it doesn't work...
+  QWidgetList  *list = QApplication::allWidgets();
+  QWidgetListIt it( *list );         // iterate over the widgets
+  QWidget * widget;
+  while ( (widget=it.current()) != 0 ) {  // for each widget...
+    ++it;
+    if ((found== false) && (widget->inherits("QMainWindow"))) {
+      found = true;
+    }
+  }
+  delete list;                      // delete the list, not the widgets
+#else
+  foreach (QWidget *widget, QApplication::allWidgets()) {
+    if ((found== false) && (widget->inherits("QMainWindow"))) {
+      found = true;
+    }
+  }
+#endif
+
+  if (found) {
+    G4cout        << "G4UIQt : Found an external App with a QMainWindow already defined. Aborted" << G4endl;
+    return ;
+  }
   fMainWindow = new QMainWindow();