鼠标取色器，取值取色值源码，鼠标全屏幕取点取色。switch (e->type()) { case QEvent::MouseMove: MouseMoveColorPicker((QMouseEvent *)e); break; case QEvent::MouseButtonPress: m_wid->setCursor(Qt::CrossCursor); break; case QEvent::MouseButtonRelease: m_wid->setCursor(Qt::ArrowCursor); break; default: break; } return QObject::eventFilter(obj, e);

取色器，鼠标放在哪里，就显示哪里的RGB颜色值，轻松获取各种颜色值