Difference ui->tableWidget->mapFromGlobal(QCursor::pos()); and on_tableWidget_customContextMenuRequested (const QPoint &pos)

Taz742

Hello.
I have tableWidget and i installed on EventFilter.
I'm interested in the place where clicked, does there item?

When I observed these events I noticed such a thing.
For Example:

QPoint eventPos = ui->tableWidget->mapFromGlobal(QCursor::pos());
QPoint contextMenuPos = //What it will be

To check whether I really had an item or not I had to change my eventPos.

eventPos.setX(eventPos.x() - 15);
eventPos.setY(eventPos.y() - 22);

15 and 22 are derived from contextMenuPos.x () - eventPos.x () and contextMenuPos.y () - eventPos.y () ;

All of this works well.
my question: But should I be sure it will always work?

bool dlgAutomaticSend::eventFilter(QObject *obj, QEvent *event){
    if (obj == ui->tableWidget->viewport()) {
        if (event->type() == QEvent::MouseButtonPress) {
            LastWidget = TemplateWidget;
            QPoint pos = ui->tableWidget->mapFromGlobal(QCursor::pos());
            pos.setX(pos.x() - 15);
            pos.setY(pos.y() - 22);
            auto &&item = ui->tableWidgetTemplate->itemAt(pos);

            ui->btnEdit->setEnabled(!(item) ? false : true);
            ui->btnRemove->setEnabled(!(item) ? false : true);

            ui->btnPlus->setEnabled(true);
            ui->btnHistory->setEnabled(false);
        }
    }

    return QDialog::eventFilter(obj, event);
}

Taz742

@mrjj said in Difference ui->tableWidget->mapFromGlobal(QCursor::pos()); and on_tableWidget_customContextMenuRequested (const QPoint &pos):

QPoint pos = ui->tableWidget->viewport()->mapFromGlobal(QCursor::pos());

its work :) thank.
when i click on the same point QPoint pos = ui->tableWidget->mapFromGlobal(QCursor::pos()) and customcontextmenu point is different. and difference between them X = customPOS.x - pos.x = 15 and customPOS.y - pos.y = 22.

SGaist

Hi,

The customContextMenuRequested provides the position over the specific widget that emitted it.

mrjj

Hi
I was wondering where the 22 and 15 comes

can you try
QPoint pos = ui->tableWidget->mapFromGlobal(QCursor::pos());
--->
QPoint pos = ui->tableWidget->viewport()->mapFromGlobal(QCursor::pos());

Taz742

@mrjj said in Difference ui->tableWidget->mapFromGlobal(QCursor::pos()); and on_tableWidget_customContextMenuRequested (const QPoint &pos):

QPoint pos = ui->tableWidget->viewport()->mapFromGlobal(QCursor::pos());

its work :) thank.
when i click on the same point QPoint pos = ui->tableWidget->mapFromGlobal(QCursor::pos()) and customcontextmenu point is different. and difference between them X = customPOS.x - pos.x = 15 and customPOS.y - pos.y = 22.