Callback not happening when called from code.

QNX DEVELOPERS General Programming
1

Hi,
I set up a callback in PhAb, so when an item is selected from a listbox, I can find out what the text is in that list item, this works fine, but when I use

PtListSelectPos(ABW_ListOfNetworks,num);

To select an item in code, the item is selected visually, but the callback is not called. Is this supposed to happen? How can I get the callback to be called when the even happens from within code, rather than the user clicking?

Thanks

Garry

2

what’s the callback you use?

3

I’ve hit the same situation with other widgets. I don’t think there is any convenience functions to do this.

PtListSelectPos() does select the item but, to take a stab, your app would have to inject a button release event into the event space at the coordinates of the list item to get the desired callback to trigger.

4

You have to set a flag to enable callbacks to be invoked from changes due to programmatically changing a widget resource. I forget the name of the flag, but it is something like Pt_ENABLE_CALLBACKS.

5

Thanks to all who replied, cdm’s suggestion looks perfect!

Garry