Ron,

You can check _Screen.Forms collection for the presence of the form. For example, Re: Testing an open form Message #697568.
The best way would be to create a Form Manager that handles such stuff and launch all forms through it.

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>How can I check if the user starts a form before. I want the user not to be able to start the same form again, because the form is already open? I start my forms from a pull down menu.
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