Deselecting selection on QTableWidget

[grantbj74]

Hi,

I would like to deselect what I have currently selected on a QTableWidget. My code goes through and removes some rows from the table. If all rows are removed while a row is selected it crashes. If nothing is selected when everything is removed it doesn't crash.

I have tried the following with no luck:

table->setCurrentCell(-1,-1);
table->clearSelection();

table->setCurrentCell(-1,-1);
table->clearSelection();

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Thanks
Brendan

[Lykurg]

Please, could you provide a minimal compilable program that reproduce your issue.

[grantbj74]

It's bit of a mess because I have a pair of vector arrays one for labels on the table another for pointers to endpoints.

You will need to substitute something for TestEndpoint.

std::vector<QLabel*> m_endpoint_labels;
std::vector<TestEndpoint*> m_testendpoint_items;
//QTableWidget *endpoint_table;
 
void Add_Data(string serial_num, TestEndpoint*e)
{
        endpoint_table->setRowCount(endpoint_table->rowCount() + 1);
 
        QLabel *lbl = new QLabel(serial_num.c_str());
        endpoint_table->setCellWidget(endpoint_table->rowCount() - 1, 0, lbl);
 
        m_endpoint_labels.push_back(lbl);
        m_testendpoint_items.push_back(e->getEndpoint());
}
 
void MyQtApp::onRemoveFailedButton()
{
    unsigned int count = 0;
        // Look through all endpoints...
    while(count < m_testendpoint_items.size()) {
            // Is the endpoint offline?
        if(!m_testendpoint_items[count]->getEndpoint().isOnline()) {
 
            delete m_endpoint_labels[count];
            m_testendpoint_items.erase(m_testendpoint_items.begin() + count);
            m_endpoint_labels.erase(m_endpoint_labels.begin() + count);
 
            endpoint_table->removeRow(count);
 
        } else count ++;
    }
}

std::vector<QLabel*> m_endpoint_labels;
std::vector<TestEndpoint*> m_testendpoint_items;
//QTableWidget *endpoint_table;

void Add_Data(string serial_num, TestEndpoint*e)
{
        endpoint_table->setRowCount(endpoint_table->rowCount() + 1);

        QLabel *lbl = new QLabel(serial_num.c_str());
        endpoint_table->setCellWidget(endpoint_table->rowCount() - 1, 0, lbl);

        m_endpoint_labels.push_back(lbl);
        m_testendpoint_items.push_back(e->getEndpoint());
}

void MyQtApp::onRemoveFailedButton()
{
    unsigned int count = 0;
        // Look through all endpoints...
    while(count < m_testendpoint_items.size()) {
            // Is the endpoint offline?
        if(!m_testendpoint_items[count]->getEndpoint().isOnline()) {

            delete m_endpoint_labels[count];
            m_testendpoint_items.erase(m_testendpoint_items.begin() + count);
            m_endpoint_labels.erase(m_endpoint_labels.begin() + count);

            endpoint_table->removeRow(count);

        } else count ++;
    }
}

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[grantbj74]

I found the problem.

I had a currentCellChanged() event that was being called.

Passing me currentRow = -1.

I was then doing the following, which I think crashed it.

QLabel* lbl = (QLabel *) endpoint_table->cellWidget(currentRow, ENDPOINT_DATA_COL);

QLabel* lbl = (QLabel *) endpoint_table->cellWidget(currentRow, ENDPOINT_DATA_COL);

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