how to know which is the class that sends the signal in qt ?

**sliverTwist** · 23rd April 2013, 11:55

i know the method QSignalMapper but don't konw how to use it with this code

Qt Code:

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connect( ui->welcome, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->credentials, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->config, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->syncwindow, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->loaduser, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );

connect( ui->welcome, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->credentials, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->config, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->syncwindow, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );
    connect( ui->loaduser, SIGNAL(changeStackedWidgetIndex(int)),
             ui->stackedWidget, SLOT(setCurrentIndex(int)) );

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