Examples with IDispatchCallback com.sun.jna.platform.win32.COM.IDispatchCallback used on opensource projects

Example 1 with IDispatchCallback

use of com.sun.jna.platform.win32.COM.IDispatchCallback in project jna by java-native-access.

the class ProxyObject method advise.

public IComEventCallbackCookie advise(Class<?> comEventCallbackInterface, final IComEventCallbackListener comEventCallbackListener) {
    assert COMUtils.comIsInitialized() : "COM not initialized";
    try {
        ComInterface comInterfaceAnnotation = comEventCallbackInterface.getAnnotation(ComInterface.class);
        if (null == comInterfaceAnnotation) {
            throw new COMException("advise: Interface must define a value for either iid via the ComInterface annotation");
        }
        final IID iid = this.getIID(comInterfaceAnnotation);
        final ConnectionPoint rawCp = this.fetchRawConnectionPoint(iid);
        // create the dispatch listener
        final IDispatchCallback rawListener = factory.createDispatchCallback(comEventCallbackInterface, comEventCallbackListener);
        // store it the comEventCallback argument, so it is not garbage
        // collected.
        comEventCallbackListener.setDispatchCallbackListener(rawListener);
        // set the dispatch listener to listen to events from the connection
        // point
        final DWORDByReference pdwCookie = new DWORDByReference();
        HRESULT hr = rawCp.Advise(rawListener, pdwCookie);
        // release before check in case check
        int n = rawCp.Release();
        // throws exception
        COMUtils.checkRC(hr);
        // return the cookie so that a call to stop listening can be made
        return new ComEventCallbackCookie(pdwCookie.getValue());
    } catch (Exception e) {
        throw new COMException("Error occured in advise when trying to connect the listener " + comEventCallbackListener, e);
    }
}