[SOLVED] Connecting two subclassed widgets using signal/slots

Michal

Hi! It may be a silly question but I have been struggling with this for some time...

I have a MainWindow with 2xQPushButton: button1 and button2. I click on button1 and object from ClassA (QWidget) is created and shown. In newly opened window I have another QPushButton - buttonA. I would like to click on it and emit a signal to MainWindow's button2.

The general idea is to use connect(buttonA, SIGNAL(emittedSignalFromClassA()), this, SLOT(doSomethingInMainWindow)));
The question is how to get a pointer to dynamically created obcject to be "visible" in mainwindow??

I created this example to understand how to solve my problem, my code requires similar solution. I appreciate any of Your help!

Regards, Michael.

mcosta

Hi and welcome to devnet,

I suggest to change your approach to the problem; the simplest way to do this is:

Create a signal in your ClassA:

Q_SIGNALS:
    void buttonClicked();

Connect the buttonA clicked() signal to that signal

connect(buttonA, SIGNAL(clicked()), this, SIGNAL(buttonClicked()));

In your MainWindow connect the buttonClicked signal coming from ClassA to your slot

_classA = new ClassA();
connect(_classA, SIGNAL(buttonClicked()), this, SLOT(mySlot()));
_classA->show();

Happy Programming

Michal

Thank you, connecting 2 signals did the job! I spent hours to make this work...Have a nice day! ;)

mcosta

You're welcome

Happy Programming