I found
QgsMapToolEmitPoint , QgsMapTool and canvas.setMapTool(...) So I declared my class as AoiSizeValidator(QgsMapToolEmitPoint) But gave that a try and it gets me x,y, initially but when I select an add layer from the qgis edit menu, I guess it sets a new map tool so mine gets overridden. So looks like I need a different approach to get xy from the map canvas. From: QGIS-Developer <qgis-developer-boun...@lists.osgeo.org> On Behalf Of Catania, Luke A ERDC-RDE-GRL-VA CIV via QGIS-Developer Sent: Wednesday, April 5, 2023 11:27 AM To: qgis-developer@lists.osgeo.org Subject: [QGIS-Developer] Detect a Map Canvas Mouse Event Trying to get a map canvas event when canvas is clicked and mouse is dragged. I have code that creates an empty layer, but I use the QGIS edit menu to add the actually layer. I want to be able to track the mouse movement so I can calculated the area of the feature being drawn in real time so I can make sure the area is within a defined range. Is there an event I can connect to so I can run my custom code when the even occurs?
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