我上课,派生自QChartView
,我已启用橡皮筋选择
MyChartView::MyChartView(QChart* chart)
:QChartView(chart)
{
setMouseTracking(true);
setInteractive(true);
setRubberBand(RectangleRubberBand);
}
Qt文档说明
如果松开鼠标左键并启用橡皮筋,则接受事件并将视图缩放到橡皮筋指定的矩形中。如果是鼠标右键事件,则视图缩小。
我不想让右键缩小。我试图覆盖mouseReleaseEvent
void MyChartView::mouseReleaseEvent(QMouseEvent *e)
{
if(e->buttons() == Qt::RightButton)
{
std::cout << "my overriden event" << std::endl;
return; //event doesn't go further
}
QChartView::mouseReleaseEvent(e);//any other event
}
但它不会打印任何内容。
如何更改此行为?
答案 0 :(得分:2)
问题解决方案非常简单。我刚刚混合了button()
和buttons()
个函数。以下代码正常运行:
void MyChartView::mouseReleaseEvent(QMouseEvent *e)
{
if(e->button() == Qt::RightButton)
{
std::cout << "my overriden event" << std::endl;
return; //event doesn't go further
}
QChartView::mouseReleaseEvent(e);//any other event
}