How to Get CurrentWidget ObjectName

[Taz742]

connect(qApp, SIGNAL(focusChanged(QWidget*, QWidget*)), this, SLOT(WidgetChanged(QWidget*, QWidget*)));

void dlgAutomaticSend::WidgetChanged(QWidget *prev, QWidget *)
{
    if(!prev)
        return;

    QString objName = prev->objectName();

    if (objName == "treeWidget" || objName == "tableWidgetContact" || objName == "tableWidgetTemplate"){
        lastWidget = prev;
    }
}

void dlgAutomaticSend::closeEvent(QCloseEvent *){
    qApp->blockSignals(true);
}

It works but when the dialogue starts for the first time its crashed.
Because when I pressed the button then there was no "prev" - widget.

[sierdzio]

@Taz742 said in How to Get CurrentWidget ObjectName:

if(!prev)
return;

So that guard does not protect you in this case?

Can you show how you declare WidgetChanged() in your header file? Does "prev" default to nullptr?

[Taz742]

@sierdzio said in How to Get CurrentWidget ObjectName:

Can you show how you declare WidgetChanged() in your header file?

it is private slot:

    void WidgetChanged(QWidget *prev, QWidget *now);

i solved this.

void dlgAutomaticSend::WidgetChanged(QWidget *prev, QWidget *now)
{

    if(prev == ui->tableWidgetContact){
        objName = "tableWidgetContact";
    }

    if(prev == ui->tableWidgetTemplate){
        objName = "tableWidgetTemplate";
    }

    if(prev == wdgTree){
        objName = "wdgTree";
    }
}

void dlgAutomaticSend::on_btnPlus_clicked()
{
    if (objName == "treeWidget") {
        wdgTree->AddSLOT();
    } else if (objName == "tableWidgetContact") {
        AddContactSLOT();
    } else if (objName == "tableWidgetTemplate") {
        AddTemplateSLOT();
    }
}

void dlgAutomaticSend::on_btnEdit_clicked()
{
    if (objName == "treeWidget") {
        wdgTree->EditSLOT();
    } else if (objName == "tableWidgetTemplate") {
        EditTemplateSLOT();
    }
}

void dlgAutomaticSend::on_btnRemove_clicked()
{
    if (objName == "treeWidget") {
        wdgTree->RemoveSLOT();
    } else if (objName == "tableWidgetTemplate") {
        RemoveTemplateSLOT();
    }
}

[sierdzio]

@Taz742 said in How to Get CurrentWidget ObjectName:

void WidgetChanged(QWidget *prev, QWidget *now);

perhaps void WidgetChanged(QWidget *prev = nullptr, QWidget *now = nullptr); would have worked better.

Anyway, your solution is good, too. Congrats and happy coding :-)

[Taz742]

@sierdzio
In this case I leave it unchanged, but I know your advice. thank you very much.