API Guide > Command plug-ins >

# MFnPlugin

The following is a new version of the hello command which uses MFnPlugin to register itself instead of using the macros in MSimple.h.

    #include <stdio.h>
    #include <maya/MString.h>
    #include <maya/MArgList.h>
    #include <maya/MFnPlugin.h>
    #include <maya/MPxCommand.h>
    #include <maya/MIOStream.h>
    class hello : public MPxCommand
    {
        public:
            MStatus doIt( const MArgList& args );
            static void* creator();
    };

    MStatus hello::doIt( const MArgList& args ) {
        cout << "Hello " << args.asString( 0 ).asChar() << endl;
        return MS::kSuccess;
    }

    void* hello::creator() {
        return new hello;
    }

    MStatus initializePlugin( MObject obj ) {
        MFnPlugin plugin( obj, "Autodesk", "1.0", "Any" );
        plugin.registerCommand( "hello", hello::creator );
        return MS::kSuccess;
    }

    MStatus uninitializePlugin( MObject obj ) {
        MFnPlugin plugin( obj );
        plugin.deregisterCommand( "hello" );
        return MS::kSuccess;
    }

Note

initializePlugin() and uninitializePlugin() must be present in all plug-ins. If both or either is absent the plug-in will not be loaded and the creator is necessary to allow Maya to create instances of the class. See the following for details.