Shopping list type of program: how to move bought items to the bottom of QTreeWidget?

[Urthas]

I don't know how to create a new signal for an object to emit.

Nothing easier! In your header file, include the following section:

signals:
     void yourSignal(); // can also have parameters
     ...
//rest of class

signals:
     void yourSignal(); // can also have parameters
     ...
//rest of class

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That's it! (Well ok, they can be declared as protected etc., but that can come later). There is no "definition" of signals in the .cpp file, and their return type must be void. Then, in the .cpp file, you will have the following:

retType yourClass::yourFunction(yourParams)
{
     ...
     emit yourSignal();
     ...
     return ...;
}

retType yourClass::yourFunction(yourParams)
{
     ...
     emit yourSignal();
     ...
     return ...;
}

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The emit statement is often located near or at the end of a function. So now an object of type yourClass will emit yourSignal() whenever yourFunction() is called, and that object can be meaningfully connected to a slot.

Hope this helps!

[weeezes]

Wow, thank you very much, Urthas! That's exactly what I was strugling to find! That seems so simple that I almost feel embarassed that I ever asked about it . The emit statement is a new thing for me, maybe it's a so short word that I have missed it completely . Let's see if I get something done with this new skill of mine >...

Thank you again .