QExposeEvent class contains event parameters for expose events. 更多...
| 头： | #include <QExposeEvent> |
| qmake: | QT += gui |
| Since: | Qt 5.0 |
| 继承： | QEvent |
| QExposeEvent (const QRegion & exposeRegion ) | |
| const QRegion & | region () const |
QExposeEvent class contains event parameters for expose events.
Expose events are sent to windows when an area of the window is invalidated or window visibility in the windowing system changes.
事件处理程序 QWindow::exposeEvent () 接收曝光事件。
构造曝光事件为给定 exposeRegion 其必须在本地坐标中。
Returns the window area that has been exposed. The region is given in local coordinates.
