widget container with custom type

[user4592357]

i have a widget and a widget container. the container creates a lot of those widgets in the constructor and sets some attributes and connects some signals and slots.

class Widget : public QWidget {};
class Container : public QWidget {};

i need another container widget like the above one but with different widgets inside.

what i think i can do:

1. make a template function that takes as template argument the widget type, and call that function from each container widget with appropriate type (can i override template functions?)
2. copy the code of first container widget's ctor into the ctor of the second one and there create another type of widgets

i like the 1st one more. any more suggestions/advice?

[dheerendra]

Template approach is good.

[user4592357]

@dheerendra
yeah but i can't override a template function...
also, how should i create the different signal/slot connections? should i pass them as a list to the function?

[jsulm]

@user4592357 Something like

// Base would be QWidget in your case
class Base {};
class W1 : public Base {};
class W2: public Base {};

template<typename W> Base* createWidget()
{
    return new W();
}

class Container
{
public:
    Container(std::function<Base*()> factory)
    {
        // Create an instance of the widget
        Base* widget = factory();
    }
}

Container container1(createWidget<W1>);
Container container2(createWidget<W2>);

Regarding connections: as long as these widgets have same signals/slots (from base class from example) I don't see any issues. But if they have different signals/slots I don't see how you can do this in a generic way as your container needs to know what these different widgets have.