subclass qpushbutton

[ChrisW67]

However, I get 'no matching function for call to char[]' errors on code that calls them like this: okButton = new Button("Ok");
How is this done, it should convert the char[] somehow to const QString?

Your class expects a QString and is being given a const char*. The compiler will try to find a QString constructor accepting a const char*, a conversion constructor, and construct a QString on your behalf. If there is no such constructor then your code generates an error like the one you describe. If your program is being built with QT_NO_CAST_FROM_ASCII defined then QString interfaces accepting C string literals are disabled and you need to explicitly do something like this:

Button b(QLatin1String("coffee"));
//or
Button b(QString::fromUtf8("кофе"));

Button b(QLatin1String("coffee"));
//or
Button b(QString::fromUtf8("кофе"));

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