这个例子演示了如何使用QPainter的转换和缩放特性来简化绘图. 值得学习的: 定时器事件ID检查: 在定时器事件中检查定时器id是比较好的实践. QPainter抗锯齿: We call QPainter::setRenderHint() with QPainter::Antialiasing to turn on antialiasing. This makes drawing of diagonal lines much smoother. 画笔的平移/缩放: p->translate(…
The Application example shows how to implement a standard GUI application with menus, toolbars, and a status bar. The example itself is a simple text editor program built around QPlainTextEdit. Nearly all of the code for the Application example is in…