I have a qgis plugin (c++) that adds a map tool inherits from QgsMapTool. My tool does nothing, juste I can activate my tool by triggering. I test my plugin in Qgis 2.4; when I activate my tool the I passed to another tool Qgis crash and write a minimum dump file.

Dump File: qgis-20140915-111427-2760-1564-8fdd08a.dmp : C:\Users\Admin\AppData\Local\Temp\qgis-20140915-111427-2760-1564-8fdd08a.dmp Last Write Time: 15/09/2014 11:14:28 Process Name: qgis-bin.exe : C:\Program Files (x86)\QGIS Chugiak\bin\qgis-bin.exe Process Architecture: x86 Exception Code: 0xC0000005 Exception Information: The thread tried to read from or write to a virtual address for which it does not have the appropriate access. Heap Information: Not Present

System Information

OS Version: 6.1.7601 CLR Version(s):


Module Name Module Path Module Version

qgis-bin.exe C:\Program Files (x86)\QGIS Chugiak\bin\qgis-bin.exe ntdll.dll C:\Windows\SysWOW64\ntdll.dll 6.1.7601.18247 ....

this is the C++ code:

MapToolAdvancedEditPolygons::MapToolAdvancedEditPolygons( QgisInterface *ptInterface )
    : QgsMapTool( ptInterface->mapCanvas () )
    , m_ptInterface ( ptInterface )


I initialised my plugin as below:

void GeoAdvancedEditTool::initGui ()
 m_ptAdvancedEditAction = new QAction ( QIcon ( ":/geoadvancededittool/images/AdvancedEditAction.png" ), tr ( "advanced edit polygons tool" ), this);
 m_ptAdvancedEditAction->setCheckable ( true );
 m_ptAdvancedEditAction->setActionGroup ( m_ptInterface->actionMoveFeature()->actionGroup() );
 m_ptInterface->digitizeToolBar()->addAction ( m_ptAdvancedEditAction );

 connect( m_ptAdvancedEditAction, SIGNAL( triggered() ), this, SLOT( advancedEditActivated() ) );

 m_ptMapToolAdvancedEditPolygons = new MapToolAdvancedEditPolygons( m_ptInterface );
 m_ptMapToolAdvancedEditPolygons->setObjectName( "GEOAdvancedEditPolygonsTool" );
 m_ptMapToolAdvancedEditPolygons->setAction( m_ptAdvancedEditAction );

void GeoAdvancedEditTool::advancedEditActivated()
 m_ptInterface->mapCanvas()->setMapTool( m_ptMapToolAdvancedEditPolygons );
 m_ptInterface->mapCanvas()->setCursor( QCursor( Qt::CrossCursor ) );

I don't understand why Qgis crash!


Problem solved, I must use Qgis libraries shipped with OSGeo4W.

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