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hiDisplayProgressBox callback function and more

ToMWUT

I've got a question concerning hiDisplayProgressBox function. I have a code which creates the progress box, where I use the ?callback argument with the function name:

hiDisplayProgressBox(?name 'pb ?banner nazwa ?text opis ?callback ''inscheme(gui_package->cancel()'' ?totalSteps liczba_krokow ?autoClose auto_close)

Now the problem is that callback function isn't called either I press the „Cancel” button on the progress box nor the progress indicator reaches 100%. Even when I put into the callback name of the function that doesn't exists nothing happens, no error or anything... Where is the problem?

I thought that when I'll be able to solve this problem with your help I've got other questions. First of all according to the manual the progress box callback function is called when I press cancel button or when the progress indicator reaches 100%. My question now is if it is possible to call some function only when I press cancel button? The reason why I would like to do this, is that I call a function which creates progress box everywhere in my code when I'm expecting that some long operations might occur – it is quite obvious. And now after pressing this cancel button I would like to call a procedure which would stop all the actions. Is it even possible in SKILL to write such a procedure? I mean procedure that wouldn't kill Cadence and just stop all SKILL actions?

Thanks ToM

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  • Hi ToM,

    I think the problem is that you have made a typo in your callback. It should be inScheme() not inscheme(). Also, if you do an importSkillVar(gui_package) at the top of your SKILL++ code you don't need to do the inScheme() at all. The trouble is that errors in the callback function are swallowed (with errset) so you're not seeing the error. I managed to have a callback invoked from both the cancel button and completion of the progress bar when I tried it.

    Since SKILL is single threaded, there's no concept of being able to stop SKILL actions. Assuming that your application allows some interaction with the GUI whilst it's running, then the way to do this is probably to set some kind of semaphore to indicate that the action has been cancelled, and have lengthy SKILL code periodically check this semaphore and then exit what it is doing. 

    Regards,

    Andrew.

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  • Hi ToM,

    I think the problem is that you have made a typo in your callback. It should be inScheme() not inscheme(). Also, if you do an importSkillVar(gui_package) at the top of your SKILL++ code you don't need to do the inScheme() at all. The trouble is that errors in the callback function are swallowed (with errset) so you're not seeing the error. I managed to have a callback invoked from both the cancel button and completion of the progress bar when I tried it.

    Since SKILL is single threaded, there's no concept of being able to stop SKILL actions. Assuming that your application allows some interaction with the GUI whilst it's running, then the way to do this is probably to set some kind of semaphore to indicate that the action has been cancelled, and have lengthy SKILL code periodically check this semaphore and then exit what it is doing. 

    Regards,

    Andrew.

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