[QGIS-Developer] where is qgsmaptoolselect.h

[weskerjiang at sina.cn]

Hello,I'm developing a standalone application with QGIS 3.0,I want to create a select tool,so I use  
 QgsMapTool* mSelect = new QgsMapToolSelectFeatures(mapCanvas),


but i can't include <qgsmaptoolselect.h> file because there is no this file ,i build from source,
so my question is how to get the .h file or create a select tool in QGIS 3.0?
 
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