Eclipse RCP ,why perspective bar not appear?

I called such method in WorkbenchWindowAdvisor's postWindowOpen method

windowConfigurer.setShowPerspectiveBar(true);

but perspective ba开发者_开发百科r stills not show itself

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Try calling it from preWindowOpen().

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Try to clean your workspace of your running product. These kind of preferences are saved and persisted in the workbenchlayout and are loaded from there instead from your code.