Qt connect signal slot different parameters

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Qt: Connecting SIGNAL to SLOT in 2 different windows -… To connect signals to slots, as far as I know, the parameters of the signal need to match the parameters of the slot. So for example: connect(dockWidget->titleBarWidget(), SIGNAL(closeButtonClicked()), ui->sideControls, SLOT(closeDockWidget())). Is it possible in Qt to combine the signals with … There are several signals with different parameter types and different number. The ad itself signals change is not possible. You need to connectit them all with one slot in which it wouldUntil I realized that the simplest thing would slot was without any parameters, then it can be connect with any signal.

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A C++ signal/slots library, mostly from the ground up // Declare and instantiate a signal for functions that take a // single char arg. JL_Signal ( char ) oKeyPressSignal ; // Two objects of unrelated type. Piano oPiano ; // plays notes Transcriber oTranscriber ; // generates text logs // Lets …

Organizing RPC via QT: Library for Communication between Objects ...

How Qt Signals and Slots Work - Part 3 - Queued and Inter ... Qt Event Loop. An event posted using a QueuedConnection is a QMetaCallEvent. When processed, that event will call the slot the same way we call them for direct connections. All the information (slot to call, parameter values, ...) are stored inside the event.

Qt - modify slot's parameter of previous connected

Fortunately, the Qt folks provided a solution that can make passing extra arguments to slots relatively simple. This is the QSignalMapper class. I'll just show a partial code sample. Suppose we have two different QAction objects, and we want to connect both to the slot: Signals and Slots - Qt