Re: Using GetActiveObject of OLEAUT32.DLL

Code for those who are interested ...

//---- START OleAut32.java
package org.jawin.win32;

import org.jawin.*;
import org.jawin.io.*;
import java.io.*;
import org.jawin.constants.WellKnownGUIDs;
import org.jawin.marshal.GenericStub;

public class OleAut32 {

    private static final FuncPtr funcGetActiveObject;
    private static final String instrGetActiveObject = "P16kA:H:L8N|4UU|";
    private static final int stackSizeGetActiveObject = 12;

    static {
        try {
            String oleaut32Dll = "OLEAUT32.DLL";
            funcGetActiveObject = new FuncPtr
(oleaut32Dll, "GetActiveObject");
        } catch (COMException ce) {
            throw new COMError("Unable to load OleAut32 entry points (" +
ce.getMessage() + ")");
        }
    }

    private OleAut32() {
    }

    public static IUnknown GetActiveObject(String progID)
        throws COMException
    {
        try {
            //--- needs a package private CLSIDFromProgID (orig. version in
Ole32.java is private)
            GUID clsid = Ole32.CLSIDFromProgID(progID);

            Ole32.CoCreateInstance
(clsid,Ole32.CLSCTX_ALL,WellKnownGUIDs.IID_IUnknown);

            System.out.println(clsid);
            System.out.flush();

            NakedByteStream nbs = new NakedByteStream();
            LittleEndianOutputStream baos = new LittleEndianOutputStream
(nbs);
            clsid.marshal(baos, null);
            byte[] result = funcGetActiveObject.invoke(instrGetActiveObject,

stackSizeGetActiveObject,
                                                       nbs,
                                                       null,

ReturnFlags.CHECK_HRESULT);

            return (IUnknown) IdentityManager.getCOMPtr(result, 0,
WellKnownGUIDs.IID_IUnknown);
        } catch (IOException ioe) {
            throw new COMException(ioe);
        }
    }

}
//---- END