其他

EventTest/main.cpp

@@ -1,11 +1,38 @@
 #include "mainwindow.h"
 
 #include <QApplication>
+#include <QLabel>
+#include <QMouseEvent>
+
+class EventLabel : public QLabel
+{
+protected:
+    void mouseMoveEvent(QMouseEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+    void mouseReleaseEvent(QMouseEvent *event);
+};
+
+void EventLabel::mouseMoveEvent(QMouseEvent *event){
+    this->setText(QString("<center><h1>Move: (%1, %2)</h1></center>").arg(QString::number(event->x()),QString::number(event->y)));
+}
+
+void EventLabel::mousePressEvent(QMouseEvent *event){
+    this->setText(QString("<center><h1>Press: (%1, %2)</h1></center>").arg(QString::number(event->x()),QString::number(event->y)));
+}
+
+void EventLabel::mouseReleaseEvent(QMouseEvent *event){
+    QString msg;
+    msg.sprintf("<center><h1>Release: (%d, %d)</h1></center>", event->x(), event->y());
+}
 
 int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
-    MainWindow w;
-    w.show();
+
+    EventLabel *label = new EventLabel;
+    label->setWindowTitle("MouseEvent Demo");
+    label->resize(300,200);
+    label->show();
+
     return a.exec();
 }