error with QList<my_labels *> handling

[navid]

Hello

my application crash with the following error:

ASSERT failure in QList<T>::at: "index out of range", file c:/Qt/2009.04/qt/include/QtCore/../../src/corelib/tools/qlist.h, line 395

================================================
//header
struct my_labels
{
QLabel * label_a;
QLabel * label_b;
QLabel * label_c;
};

private:
QList<my_labels *> my_labels_list;

//cpp
my_labels_list.clear();;
my_labels_list.at(0)->label_a = ui->label1; //<- error

==========================================
i going to have a list of (pointer to) my labels widgets

i will be appreciated with your comments in this regard.
n navid

[jano_alex_es]

if you remove all the items from your list and you try to access to them, of course it's going to crash :P

my_labels_list.clear();
//fill your list first!!!!
my_labels_list << label_a;
my_labels_list << label_b;
my_labels_list << label_c;
my_labels_list[0] = ui->label1

my_labels_list.clear();
//fill your list first!!!!
my_labels_list << label_a;
my_labels_list << label_b;
my_labels_list << label_c;
my_labels_list[0] = ui->label1

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[navid]

thanks
navid

[jano_alex_es]

agh! sorry; don't use [], use QList::insert instead.