little logical question........

[sudheer]

Hi

i had connected about 15 QActions to a common SLOT, but i am not able to find in my slot function from which QAction the SIGNAL is coming . I had coded something like this

for(int i=0; i<15; i++)
    { 
      play_add_Act[i] = new QAction(this);
      play_add_Act[i]->setText("Play list");
      connect(play_add_Act[i], SIGNAL(triggered()), this, SLOT(addplaylist()));
    }

for(int i=0; i<15; i++)
    { 
      play_add_Act[i] = new QAction(this);
      play_add_Act[i]->setText("Play list");
      connect(play_add_Act[i], SIGNAL(triggered()), this, SLOT(addplaylist()));
    }

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i also tried to pass index variable in slot function, but Wysota said that we shouldn't pass parameters names or values in SIGNAL or SLOT macros

so how can i identify signal sender action??????

[sudheer]

how can i pass signal emitting object as a parameter in SLOT macro so i can easily access slot function

(is it possible like this )

connect(play_add_Act[0], SIGNAL(triggered()), this, SLOT(addplaylist(QAction *play_add_Act[0])));

connect(play_add_Act[0], SIGNAL(triggered()), this, SLOT(addplaylist(QAction *play_add_Act[0])));

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[wysota]

You can try one of two things. Either use QObject::sender() to determine which action sent the signal or use QSignalMapper to identify the sending action using a number or string.

[sudheer]

thank q sir

hey guys whoever uses a single slot to a no' of connections it will be very very useful

see the syntax of it

QAction *action = qobject_cast<QAction *>(sender());

QAction *action = qobject_cast<QAction *>(sender());

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