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(C++) Qt signal

Qt signals are signals used by the Qt library and the IDE Qt Creator.

Always seperate classes with Qt signals/slots in a header (.h) file and an implementation (.cpp) file. If not, this will result in the link error undefined reference to 'vtable for MyClass'.

Examples

• Qt signal example 1: emitter and receiver, the Qt4 way
• Qt signal example 2: emitter and receiver, the Qt5 way

Signal pages

• Boost signal
• std::signal
• Qt signal

Go back to Richel Bilderbeek's C++ page.

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