Description Paul Watson 2007-11-30 19:57:47 EST

Hi,

I use a 3rd party chemical structure drawing ActiveX component in an eclipse RCP application. This has worked really well in the past (up to and including version 3.3). On trying version 3.4M3 I found that the ActiveX component no longer appears and I get no errors. Here is a snippet. This runs perfectly under 3.3, but for 3.4M3 this simply opens an empty shell with no errors. 

import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.ole.win32.OLE;
import org.eclipse.swt.ole.win32.OleControlSite;
import org.eclipse.swt.ole.win32.OleFrame;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class ChemicalStructureActiveXTest {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Chemical Structure ActiveX Example");
        shell.setLayout(new FillLayout());
        try {
            OleFrame frame = new OleFrame(shell, SWT.NO_BACKGROUND);
            OleControlSite site = new OleControlSite(frame, SWT.NONE,
                    "{60257C74-D60B-41D6-9296-A08BD51F15B5}");
            int ok = site.doVerb(OLE.OLEIVERB_SHOW);
            if (ok == OLE.S_OK) {
                System.out.println("Was OK apparently");
            } else {
                System.out.println("Was NOT OK apparently");
            }
        } catch (SWTError e) {
            System.out.println("Unable to open activeX control");
            return;
        }
        shell.setSize(800, 600);
        shell.open();
       
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
} 

You can download the 3rd part chemical drawing plugin here (click on the free windows download button on the RHS). Simply run the installer to install the software.

http://scistore.cambridgesoft.com/software/product.cfm?pid=4012

After you have installed this, run the snippet I provided in version 3.3 and 3.4M3. Under 3.3 everything works you should get a white drawing area and popup toolbar should appear. Under 3.4M3 it doesn't seem to work. 

Can you replicate the behavior I am seeing? 

Many thanks,

Paul Watson