How to perform some operations after pressing the X button

[Daniel_Chile]

Hi. This is a basic question about building a "pro" application.

Let's suppose I have an application (VI or built executable), which is commonly structured as a while loop.

When the user wants to exit, I need the application to perform some operations (file writing and closing, for example) and then exit. I can easily put a "close" control on the front panel and that would do it, but now I would like to do it with the X button of the title bar, as most "pro" applications do.

As you may know, the problem is that when you press the X button the aplication exits inmediatly aborting the execution, whithout performing the desired operations.

Any comments appreciated. Thank you.

Daniel R.

[altenbach]

You can use an event structure with a filtering event for "panel close?" In that event case, you could do whatever you want (e.g. create a popup) and then you can either process or discard the panel close operation depending on your needs. Try it!

[Daniel_Chile]

Perfect. That did it.

Thank you!

Daniel R.