Getting an item from an empty table widget

[ProTonS]

Hi, everybody, its my first time here.

I have a little problem, I am a beginner in qt, but I liking it. Well, to the problem:

QTableWidgetItem *item1;
QString helper;
item1 = ui.mywidget_table->item(0,1);
helper = item1->text();

QTableWidgetItem *item1;
QString helper;
item1 = ui.mywidget_table->item(0,1);
helper = item1->text();

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I´ve received a error in the last line because my cell is empty, but I think that I need to test if the cell is empty, how can I make that?

Thx in advance.

Jorge.

[gsmiko]

Hi ProTonS!

if there is no item on the location specified, the item function will return 0.
Just test the return value to see if it's a valid item or not.

QTableWidgetItem *item1;
QString helper;
item1 = ui.mywidget_table->item(0,1);
if(item1!=0)
{
   helper = item1->text();
}

QTableWidgetItem *item1;
QString helper;
item1 = ui.mywidget_table->item(0,1);
if(item1!=0)
{
   helper = item1->text();
}

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or check that the item exist before calling the item function.

QString helper;
if( ui.mywidget_table->rowCount() > 0  &&  ui.mywidget_table->columnCount() > 1)
{
   QTableWidgetItem *item1;
   item1 = ui.mywidget_table->item(0,1);
   helper = item1->text();
}

QString helper;
if( ui.mywidget_table->rowCount() > 0  &&  ui.mywidget_table->columnCount() > 1)
{
   QTableWidgetItem *item1;
   item1 = ui.mywidget_table->item(0,1);
   helper = item1->text();
}

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[ProTonS]

Thanks for your help, gsmiko.

I´m going to test it.

Bye Bye.