Custom controls not working

[TlighT]

I can't get custom controls to work. What I do is:

- Create a new SWT Project using the wizard
- Create a new Composite using the wizard (changing nothing to the generated code)
- Create a new Application Window using the wizard
- In the designer "Choose Composite"
- Select the composite I just created

And then nothing happens. I should be able to drop the custom composite on the application shell, right? I cannot use custom composites or other custom controls. They show up in the preferences page under "Custom Controls", but not in the designer palette. Also, when I manually add the custom control to the code, the designer doesn't show it.

Is there any code I should add to the controls so that the designer recognizes them?

I've tried different builds of the designer (4.1.0 and 4.1.1) but none worked. I'm using Eclipse 3.1 (build id: I20050627-1435).

I'm using a lot of custom controls, so the designer becomes unusable when I can't use them in it.

[Eric Clayberg]

Make sure that your custom control is complied (a .class file should exist) so that it can be instantiated.

Try refreshing/rebuilding your project. I would expect it to work after that.

[TlighT]

The problem was that Eclipse was running with jre 1.4, but all my projects were compiled for 1.5, so the designer was unable to load the generated .class files.

Running eclipse with the 1.5 jre solved the problem.