Question

Qt中如何判断一个点在一个区域

bool Window::handleMousePressEvent(QWidget * widget, QWidget *managedWidget, QMouseEvent *e)
{
我想判断 e.pos.x()是否在(100,100,200,200) 区域内，要怎么判断？
}

Answer 1

其实判断的很简单，你只需要调用QRect的
bool QRect::contains ( const QPoint & point, bool proper = false ) const
方法即可，列子代码如下
QPoint topLeft(100,100);
QPoint rightBottom(200,200);
QRect rect(topLeft,rightBottom);
if(rect.contains(e->pos()))
{
qDebug()<<"inner of rect";
//to do something
}else
{
qDebug()<<"outer of rect";
//to do something
}