- change: Prevent mouse wheel change combobox's current selection.

NEWS.md

@@ -11,8 +11,9 @@ Red Panda C++ Version 3.3
   - fix: Can't show definitions in iconv.h in the completion list.
   - fix: Color scheme's "Indent Guide Line" item is not used by the editor.
   - fix: "Indent Guide Line" item doesn't show in the option / editor / color scheme page.
-  - fix: Remove not used option "indent guide line" in the option / editor / general page . 
-
+  - fix: Remove not used option "indent guide line" in the option / editor / general page. 
+  - change: Prevent mouse wheel change combobox's current selection.
+
 Red Panda C++ Version 3.2
 
   - change: The way to calcuate astyle path.

RedPandaIDE/main.cpp

@@ -461,6 +461,9 @@ int main(int argc, char *argv[])
         WindowLogoutEventFilter filter;
         app.installNativeEventFilter(&filter);
 #endif
+        //Event filter to prevent QCombobox receive wheel event;
+        app.installEventFilter(pMainWindow);
+
         if (lockFile.isLocked()) {
             lockFile.unlock();
         }

RedPandaIDE/mainwindow.cpp

@@ -5844,6 +5844,17 @@ bool MainWindow::event(QEvent *event)
     return QMainWindow::event(event);
 }
 
+bool MainWindow::eventFilter(QObject *watched, QEvent *event)
+{
+    //Prevent QComboBox wheel event
+    if (event->type() == QEvent::Wheel) {
+        QComboBox *p=qobject_cast<QComboBox*>(watched);
+        if (p && !(p->view() && p->view()->isVisible()))
+            return true;
+    }
+    return false;
+}
+
 //void MainWindow::dragEnterEvent(QDragEnterEvent *event)
 //{
 //    if (event->mimeData()->hasUrls()){

RedPandaIDE/mainwindow.h

@@ -1042,12 +1042,15 @@ private slots:
     // QObject interface
 public:
     bool event(QEvent *event) override;
+    bool eventFilter(QObject *watched, QEvent *event) override;
+
     bool isClosingAll() const;
     bool isQuitting() const;
     const std::shared_ptr<VisitHistoryManager> &visitHistoryManager() const;
     bool closingProject() const;
     bool openingFiles() const;
     bool openingProject() const;
+
 };
 
 extern MainWindow* pMainWindow;