QTableWidget - how do I initialize items?

**frankiefrank** · 11th January 2011, 15:55

Sorry, still having trouble with this, and getting Read Access error, I'm thinking it's scope related but I don't really understand how I'm supposed to be doing it.

I have a table widget and I'm trying to initialize an item inside it:

Qt Code:

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void TableTry::on_btnDoWork_clicked()
{
 
int foundIdx = getOrCreateMeasurementRowIdx(ui.txtMeasurementName->text());
 
// Here is the code executed inside getOrCreateMeasurementRowIdx:
int insertAt = ui.tblMyTable->rowCount();
ui.tblMyTable->insertRow(insertAt);
ui.tblMyTable->setItem(insertAt, 0, new QTableWidgetItem(measurementName)); // Parameter is the lineEdit.text()
 
// Back in on_btnDoWork_clicked():
ui.tblMyTable->item(foundIdx,0)->setText("boooooooo"); // THIS causes error: Access violation reading location 0x00000000
}

void TableTry::on_btnDoWork_clicked()
{

int foundIdx = getOrCreateMeasurementRowIdx(ui.txtMeasurementName->text());

// Here is the code executed inside getOrCreateMeasurementRowIdx:
int insertAt = ui.tblMyTable->rowCount();
ui.tblMyTable->insertRow(insertAt);
ui.tblMyTable->setItem(insertAt, 0, new QTableWidgetItem(measurementName)); // Parameter is the lineEdit.text()

// Back in on_btnDoWork_clicked():
ui.tblMyTable->item(foundIdx,0)->setText("boooooooo"); // THIS causes error: Access violation reading location 0x00000000
}

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Is it possible I'm not supposed to be editing items I've already added? Should I always create a new item and then use setItem?

Why can't I access the item I dynamically created?