[dev] what's the deference between "defaultBootstrap_InitialComponentContext();" and " ::cppu::bootstrap()" ?

[Qzi er]

”defaultBootstrap_InitialComponentContext();  “ is failed below ,  I don't
know why ?

what's the deference between "defaultBootstrap_InitialComponentContext();"
and " ::cppu::bootstrap()" ?

int main(){

    // get the remote office component context
    Reference< XComponentContext > xContext( ::cppu::bootstrap() );
    //Reference< XComponentContext > xContext =
    //    defaultBootstrap_InitialComponentContext();
                //if ( !xContext.is() )
                //{
                //    fprintf(stderr, "no component context!\n");
                //    return 1;
                //}

    // get the remote office service manager
    Reference< XMultiComponentFactory > rOfficeServiceManager(
        xContext->getServiceManager() );
                //if ( !rOfficeServiceManager.is() )
                //{
                //    fprintf(stderr, "no service manager!\n");
                //    return 1;
                //}
    //Obtaining a desktop interface
    Reference< XInterface > xDesktop =
rOfficeServiceManager->createInstanceWithContext(
        OUString::createFromAscii( "com.sun.star.frame.Desktop" ),xContext);

    // query a XcomponentLoader Interface

    Reference< XComponentLoader > rComponentLoader (xDesktop, UNO_QUERY);

                //if( rComponentLoader.is() )
                //{
                //    printf( "XComonentloader succesfully instanciated\n"
);
                //}

    Reference< XComponent > xcomponent =
rComponentLoader->loadComponentFromURL(
        OUString::createFromAscii("private:factory/scalc"),
        OUString::createFromAscii("_blank"),
        0,
        Sequence < ::com::sun::star::beans::PropertyValue >());

    return 0;

}

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