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Resolved How to detect a change in the contents of a richtext edit control
  1. How-to
0 Votes
  1. Miguel Leeuwe
  2. PowerBuilder
  3. Friday, 4 December 2020 05:10 PM UTC

I have a richtext edit control and I'm trying to figure out if a user has done any changes or not, before closing the window.

I've tried the modified event without success. I rarely seems to fire.

I've tried the key-event (pbm_rnkey) without success: it only seems to be triggered for keys like ctrl, shift, alt, backspace, etc.

I've tried the pbm_keyup and -down, no success.

If I just typ an 's' those events aren't fired. Is this a bug maybe?

I know that edit controls have a more limited information in the key events. Like you cannot ask for the keyflags in combination with the key parameter.

I need to set a boolean like ib_changed = true, to be able to know whether I have to ask to save changes or not, when a user does ALT+F4. (mind that ALT would trigger the key event).

When / Where could I set this?

The only way out that I see at this moment, is to save the original contents when opening the window and comparing it against whatever contents there is at the moment of saving.

I was hoping for a more elegant way of doing this.

Any ideas are welcome,

TIA

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