General information
Category:
Forms & Form designer
Title:
How can you tell what forms are open?
I need a way to detect whether a given form is currently in use or even better to generate a list of open forms.
The reasons are two-fold. First, I want to restrict the user to one instance of a form and if he tries to open it again, I want the application to detect that fact and activate the existing instance rather than opening a second copy.
Second, I want to be able to do a cleanup procedure when the application is closed. This procedure would close all open forms and notify the user is there is any trouble closing any of the forms.
I cannot find any function or other mechanism to list the open form objects in an application, but I firmly believe that there has to be something.
Thanks for any help.
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