ListBox problem

[Baal80]

Hi,

I have a following problem. When I double click on an item in a ListBox, this item is moved to another ListBox - (but this is not important here). The problem is - when I doubleclick on a ListBox when NO ITEM is selected (I click ona an empty space) an error occurs. I tried to avoid this by checking in the ListBoxDoubleClick procedure:
if (ListBox->ItemIndex!=-1) [move item] but it's strange - EVEN when an item IS selected, when I debug the program it says that ItemIndex is -1. I don;t know what causes the problem... Can somebody help?
Thanks,
Baal.

 

[PerFnurt]

Hmmm, something's fishy here. Neither the list box control (CListBox) nor the list control (CListCtrl) have an ItemIndex member, hence

ListBox->ItemIndex!=-1

doesn't make sense. But since you don't seem to get a compilation error, what kind of control are you using, really?

Assuming you're using a CListBox, getting the current selection is:

  int selIndex = theListBox.GetCurSel();
  if (selIndex != LB_ERR)
  {
    // Something is selected
  }

/Per

_{"It was a work of art, flawless, sublime. A triumph equaled only by its monumental failure."}