Question

Greetings all,

I am trying to implement a QT Plugin with CMake. But this “Q_EXPORT_PLUGIN2” directive stops my class from compiling. I can compile the plugin if I commented this out,but it won’t work as a plugin if I do so.

QT doc says:

Q_EXPORT_PLUGIN2 ( PluginName, ClassName ) 

The value of PluginName should
correspond to the TARGET specified in
the plugin’s project file

What about in CMake case? What should be the value for ‘PluginName’?

Here is my Plugin Interface :

#ifndef RZPLUGIN3DVIEWERFACTORY_H_
#define RZPLUGIN3DVIEWERFACTORY_H_
#include <QObject>
#include "plugin/IRzPluginFactory.h"



class RzPlugin3DViewerFactory :public QObject,public IRzPluginFactory{
      Q_OBJECT
      Q_INTERFACES(IRzPluginFactory)
private:
    QString uid;
public:
    RzPlugin3DViewerFactory();
    virtual ~RzPlugin3DViewerFactory();

    IRzPlugin* createPluginInstance();
    IRzPluginContext* createPluginContextInstance();
    QString & getPluginUID();
};

#endif /* RZPLUGIN3DVIEWERFACTORY_H_ */

And implementation

#include "RzPlugin3DViewerFactory.h"
#include "RzPlugin3DViewer.h"


RzPlugin3DViewerFactory::RzPlugin3DViewerFactory() {
    uid.append("RzPlugin3DView");

}

RzPlugin3DViewerFactory::~RzPlugin3DViewerFactory() {
    // TODO Auto-generated destructor stub
}
IRzPlugin* RzPlugin3DViewerFactory::createPluginInstance(){
    RzPlugin3DViewer *p=new RzPlugin3DViewer;
    return p;
}

IRzPluginContext* RzPlugin3DViewerFactory::createPluginContextInstance()
{
 return NULL;
}

QString & RzPlugin3DViewerFactory::getPluginUID()
{
    return uid;
}

Q_EXPORT_PLUGIN2(pnp_extrafilters, RzPlugin3DViewerFactory)

Error Message is :

[ 12%] Building CXX object
CMakeFiles/RzDL3DView.dir/RzPlugin3DViewerFactory.cpp
.obj
C:\svn\osaka3d\trunk\osaka3d\rinzo-platform\src\dlplugins\threedviewer\RzPlugin3
DViewerFactory.cpp:36: error: expected
constructor, destructor, or type
conversi on before ‘(‘ token make[2]:
*** [CMakeFiles/RzDL3DView.dir/RzPlugin3DViewerFactory.cpp.obj]
Error 1

make[1]: *
[CMakeFiles/RzDL3DView.dir/all] Error
2 make: * [all] Error 2

Answer 1

Ok , I fixed the problem by giving the project name specified in Cmake file.

PROJECT (RinzoDLPlugin3DViewer CXX C)

So,now in CPP file its

Q_EXPORT_PLUGIN2(RinzoDLPlugin3DViewer , RzPlugin3DViewerFactory)

and included qpluginh.h

#include <qplugin.h>