topic Re: Trouble detecting mouseClick event in Qt Maps SDK Questions

Trouble detecting mouseClick event

johnmarker — Wed, 09 Jun 2021 22:52:45 GMT

I'm developing in Qt with C++. I have displayed a map and want to be able to register when the mouse clicks on a location on the map. in my class .cpp file I have tried including the mouseClicked(QMouseEvent *event), but this is never called when I click.

Display_a_map.cpp void Display_a_map::mouseClicked(QMouseEvent *event) { if (event->button() == Qt::LeftButton) { qDebug() << "testing"; } }

Re: Trouble detecting mouseClick event

GuillaumeBelz — Wed, 09 Jun 2021 22:59:54 GMT

Hi John,

In QtWidgets, the name of event functions are "mouseXxxEvent": https://doc.qt.io/qt-5/qgraphicsview.html#mousePressEvent.

"mouseClicked" is a signal provided by map and scene views, not an event handler: https://developers.arcgis.com/qt/cpp/api-reference/esri-arcgisruntime-mapgraphicsview.html

You can use it like every signals:

Dispay_a_map::Dispay_a_map() { connect(this, &Dispay_a_map::mouseClicked, this, &Dispay_a_map::handleMouseClicked); } // defined as slot void Display_a_map::handleMouseClicked(QMouseEvent *event) { if (event->button() == Qt::LeftButton) { qDebug() << "testing"; } }

Re: Trouble detecting mouseClick event

johnmarker — Thu, 10 Jun 2021 16:33:24 GMT

Ahhh. That makes a lot of sense. Thanks