Qapplication::alert If the window is not the active window, a warning is displayed to the window (very useful, as is the case with TeamViewer)

Source: Internet
Author: User

void Qapplication::alert (Qwidget * widget, int msec = 0)
If the window is not the active window, a warning is displayed to the window. The alert will display msec milliseconds.
If the millisecond is zero, the blink will stop after a period of time, and the taskbar icon will remain lit.

Widget.h

  1. #ifndef Widget_h
  2. #define Widget_h
  3. #include <QWidget>
  4. #include <QTimer>
  5. #include <QTime>
  6. Namespace Ui {
  7. Class Widget;
  8. }
  9. Class Widget:public Qwidget
  10. {
  11. Q_object
  12. Public
  13. Explicit Widget (Qwidget *parent = 0);
  14. ~widget ();
  15. void Setms (int m);
  16. Public Slots:
  17. void Start ();
  18. Private
  19. Ui::widget *ui;
  20. int MS;
  21. Qtimer *timer;
  22. };
  23. #endif//Widget_h

Widget.cpp

  1. #include "Widget.h"
  2. #include "Ui_widget.h"
  3. Widget::widget (Qwidget *parent):
  4. Qwidget (parent),
  5. UI (New Ui::widget)
  6. {
  7. UI->SETUPUI (this);
  8. Timer = new Qtimer ();
  9. Timer->setinterval (1000);
  10. Timer->start ();
  11. Connect (timer, SIGNAL (), this, SLOT (Start ()));
  12. }
  13. Widget::~widget ()
  14. {
  15. Delete UI;
  16. }
  17. void Widget::start ()
  18. {
  19. Qapplication::alert (this, MS);
  20. }
  21. void Widget::setms (int m)
  22. {
  23. Ms=m;
  24. }

Main.cpp

      1. #include "Widget.h"
      2. #include <QApplication>
      3. int main (int argc, char *argv[])
      4. {
      5. Qapplication A (argc, argv);
      6. Widget W;
      7. W.SETMS (1000);
      8. W.show ();
      9. return A.exec ();
      10. }

Http://blog.chinaunix.net/uid-29994589-id-5207150.html

Qapplication::alert If the window is not the active window, a warning is displayed to the window (very useful, as is the case with TeamViewer)

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