[platform-swt-dev] GC operations outside paint callback

[Knut Radloff <knut_radloff@xxxxxxxxxx>]

Is it valid for an application to render
directly on a GC, outside a paint callback? E.g., given the code below
am I guaranteed to get the expected line on all SWT implementations? I
don't think this is spec'd anywhere. Is this "implementation dependent"
behavior?

shell = new Shell()
shell.open()
gc = new GC(shell);
gc.drawLine(0, 0, 10, 0);

The JUnit tests don't call GC operations
inside a paint callback but they also don't test if a call actually rendered
the expected output.

Thanks, Knut