Designer doesn't connect the widgets

[martinb0820]

In Designer with Qt 4.4.3, I'm creating QPushButtons inside a QGBoxLayout, which is in turn inside a QGroupBox. The ui_*.h file that is generated contains these objects, but I have to manually connect the pushbuttons to the layout, and the layout to the group box in my code or the pushbuttons don't work:

speedHorizontalLayout->addWidget(speed1PushButton);
speedHorizontalLayout->addWidget(speedPoint1PushButton);
speedHorizontalLayout->addWidget(speedPoint01PushButton);
speedGroupBox->setLayout(speedHorizontalLayout);

Am I doing something wrong, or is this a possible bug?

Thanks,
Martin

[wysota]

You are surely doing something wrong. What does "don't work" mean in this case? You can't see the buttons or you can't press them or what? BTW. There is no such thing as QGBoxLayout. Did you mean QGridLayout? Could you post the UI file or at least its screenshot?

[martinb0820]

You are surely doing something wrong. What does "don't work" mean in this case? You can't see the buttons or you can't press them or what? BTW. There is no such thing as QGBoxLayout. Did you mean QGridLayout? Could you post the UI file or at least its screenshot?

That was a typo - I meant QHBoxLayout.

The buttons are visible but can't be pressed. If you click on them, nothing at all happens.

As noted, Designer did not auto-generate the code to put the pieces together. I had to add the following code to add the buttons to the layout, and to set the layout for the group box:

speedHorizontalLayout->addWidget(speed1PushButton);
speedHorizontalLayout->addWidget(speedPoint1PushButton);
speedHorizontalLayout->addWidget(speedPoint01PushButton);
speedGroupBox->setLayout(speedHorizontalLayout);

It seems like adding the widgets to the layout and setting the group box's layout are things that Designer should do, but maybe they aren't.

Thanks,
Martin

[pastor]

If you click on them, nothing at all happens.

You have to create a connection from clicked() signal in the QPushButton object to the method in the receiver object. Please see description of QObject::connect() n Qt Assistant for more details.

[martinb0820]

You have to create a connection from clicked() signal in the QPushButton object to the method in the receiver object. Please see description of QObject::connect() n Qt Assistant for more details.

I had connections and the buttons work fine if they are not inside the QGroupBox. Once inside the QGroupBox, they no longer work because Designer does not generate code to add them to the layout, and to set the QGroupBox's layout. Instead, I have to do the following manually:

speedHorizontalLayout->addWidget(speed1PushButton);
speedGroupBox->setLayout(speedHorizontalLayout);

I can certainly do this for all the group boxes I'm using, but it's tedious and something for which I'd hope to get some help from Designer to increase my productivity.

So the question is: Should Designer be generating this code for me, or do I have to do it manually? If Designer should be generating this code, could there be something in the objects' properties that needs to be set differently?

Thanks,
Martin

[pastor]

I'm using Qt 4.4.3 (Windows, Lininux) and I don't have any problems with QPushButton inside QGroupBox. All works fine for me.

Designer shouldn't generate any code. All code generated by UIC tool.

Can you show your UI file (or it would be nice to see your simple example, which reproduce problem)?

[martinb0820]

The problem is resolved - I was pulling in the layout from the Qt Toolbox instead of right clicking inside the group box and selecting the layout.