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query state of a control in GUI of external application

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Hey all.  I want to know if there is a way to query the state of a control in the GUI of an external application.  Like, for example, if a checkbox control in an external GUI is checked or not.  Looking at the available functions under "Window management" functions (and the control functions subsection), I am not seeing any built in functionality that would allow for this.  Is this the case, or is there some way to accomplish this that is just not a built in function?  Thanks.

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If you need much more options than ControlCommand, you can use SendMessage directly to the control.  To get a list of all the possibilities see :


Look under Control Library for a detailed list of all available messages.  Remember that some messages cannot be sent between threads (mostly when trying to set some attributes), but reading should not be a problem.

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