TListBox add and remove ithems

[jordiperezartigues]

I have two TListBox and i want to move ithems from one to the other.
i am doing:

ithemSelected = (char*)this->sourceLB->list()->at(indexSelected);
destListBox->list()->atInsert(this->destLB->list()->getCount(), ithemSelected);
sourceListBox->list()->atRemove(indexSelected);

seems to doesn't do nothing and crashed the app when i click over.

[magiblot]

Hola, @jordiperezartigues!

You have to call setRange on the TListBox every time you change the size of the underlying collection. Otherwise, the TListBox will try to access out-of-bounds items of the list, causing the program to exit.

The setRange exists so that the scroll bar state gets correctly updated when the data collection size changes. Unfortunately, you have to call it manually.

So, after moving the item from one collection to the other, you have to do the following:

sourceListBox->setRange(sourceListBox->list()->getCount());
destListBox->setRange(destListBox->list()->getCount());

Cheers.