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method 1:
cout << QDir::currentPath().toUtf8().constData(); //home/tjiang/Workspace/TestQT/build-TestCGAL-Desktop_Qt_5_3_0_GCC_64bit-Debug
method 2:
define a macro in pro file
message($${PWD}) #/home/tjiang/Workspace/TestQT/TestCGAL#message($(PWD)) #/home/tjiangDEFINES += CGAL_EIGEN3_ENABLEDDEFINES += PROJECT_PATH=\\\"$${PWD}\\\" then use this macro to define a variable in cpp file QString projectPath(PROJECT_PATH); cout << projectPath.toUtf8().constData();
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