I used 1.8.o version, when I add *.qgs file, the result is 'true', but the
layercount is 0. The detail code is like this:
QString fullPath1="D:/ProgramTest/vMap/data/newProject.qgs";
mpMapCanvas->freeze( true );
QgsMapLayerRegistry::instance()->removeAllMapLayers();
QgsProject::instance()->setFileName( fullPath1 );
bool result=QgsProject::instance()->read();
mpMapCanvas->freeze( false );
mpMapCanvas->refresh();
int t=mpMapCanvas->layerCount();
QList<QgsMapLayer*>layers=mpMapCanvas->layers();
I don't know what's wrong with it._______________________________________________
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