QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Problem with Pt[Gen]List |
| Ref. No. |
QNX.000009800 |
| Category(ies) |
Development |
| Issue |
Is there a bug in Pt[Gen]List widget, because whenever I hit enter in an empty list which has focus, it leads to an SIGSEGV in a selection callback where you try to access x09x09x09x09x09x09x09((PtListCallback_t *)cbinfo->cbdata)->item;?
|
| Solution |
This is not a bug, it is just a feature that the docs forgot to mention.
If you hit Enter, cbdata->item points to the current item (the one with the dotted line around it). If there is no current item in the widget, cbinfo->item is NULL.
Depending on the selection mode, the current item may or may not be the one of the selected items in the widget. I guess the docs should not say that cbinfo->item is "the selected item" - there might be none or more than one.
Use cbinfo->sel_item_count and cbinfo->sel_items or cbinfo->sel_array (or the convenience functions) to get to the selected
item(s) more reliably.
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