qt下的屏保程序，模拟时钟显示。包含了键盘和鼠标的事件-qt under the screen saver, analog clock display. Includes keyboard and mouse events

qt下的软键盘功能，可以用鼠标模拟键盘操作，对深入理解qt功能很有帮助-Virtual keyboard done with Qt 4.x and QtQuick when it was in beta. Does work as onscreen keyboard under Windows- does not work with X11 (empty implementation). Key remmaping code found somwhere on the n