解决按键扫描工具主界面最小化后扫描，弹窗未显示的问题BUG 1261

app/scantool/mainwindow.cpp

@@ -1266,6 +1266,27 @@ void MainWindow::timerEvent(QTimerEvent *e)
     }
 }
 
+void MainWindow::changeEvent(QEvent *e)
+{
+    if (QEvent::WindowStateChange == e->type())
+    {
+        QWindowStateChangeEvent *event = dynamic_cast<QWindowStateChangeEvent*>(e);
+        if (nullptr != event)
+        {
+            if (this->isMinimized())
+            {
+                if (m_dlgScanInfo->isVisible())
+                {
+                    m_dlgScanInfo->setWindowFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
+                    m_dlgScanInfo->show();
+                    m_dlgScanInfo->activateWindow();
+                    m_dlgScanInfo->raise();
+                }
+            }
+        }
+    }
+}
+
 void MainWindow::on_deviceArrive(QString devName)
 {
     if (devName.contains("306") || devName.contains("307") || devName.contains("358") || devName.contains("9225"))

app/scantool/mainwindow.h

@@ -50,6 +50,7 @@ private:
 protected:
     virtual void closeEvent(QCloseEvent *e) override;
     virtual void timerEvent(QTimerEvent* e) override;
+    virtual void changeEvent(QEvent* e) override;
 
 signals:
     void deviceArrive(QString devName);