Connect slots by name no matching signal

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QMetaObject::connectSlotsByName: No matching signal for So, in order to get rid of the “ No matching signal for …” warnings, we need to either follow this naming convention, or make sure no ne of our slot names begin with “on_”. If you have a slot, onDoneButton_clicked, for example, connectSlotsByName will no try to connect it with a signal, no r will emit an warning. QMetaObject::connectSlotsByName: No matching signal for on ... We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. OK, I Understand

Slots named as *"on_something** are handled in a special way by QMetaObject which uses It's reflection mechanisms to connect them to the right control and signal. The sintax is actually on_objectName_signal.

"QMetaObject::connectSlotsByName: No matching signal for ... QMetaObject::connectSlotsByName: No matching signal for on_MainWindow_destroyed() It means you have an automatically named slot method in the main window or top-level widget. Qt will automatically connect slots for child widgets, but not the top-level widget. To solve this problem, you need to: Rename the slot so it doesn't start with "on_"

QtWarning QMetaObject::connectSlotsByName: No matching signal ...

tuxboot / Discussion / General Discussion:tuxboot use ... Add attachments Cancel. You seem to have CSS turned off. Please don't fill out this field. You seem to have CSS turned off. Please don't fill out this field. QMetaObject::connectSlotsByName: No matching signal for问题的 ... So, in order to get rid of the “No matching signal for …” warnings, we need to either follow this naming convention, or make sure no ne of our slot names begin with “on_”. If you have a slot, onDoneButton_clicked, for example, connectSlotsByName will no try to connect it with a signal , no r will emit an warning. Signals and Slots in Qt5 - Woboq No compile time check: All the checks are done at run-time by parsing the strings. That means if you do a typo in the name of the signal or the slot, it will compile but the connection will not be made, and you will only notice a warning in the standard output. Since it operates on the strings, the type names of the slot must match exactly the ...

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Try Stack Overflow for Business. Our new business plan for private Q&A offers single sign-on and advanced features. Get started by May 31 for 2 months free. QMetaObject::connectSlotsByName: No matching signal @shivaVMC Can you post your connect(...) where you connect QUdpSocket::stateChanged to a slot in your MainWindow? And actually you can post all connects for all the signals you posted. Reply to QMetaObject::connectSlotsByName: No matching signal on Invalid Date c++ - Connecting overloaded signals and slots in Qt 5 ... If your syntax is right, then the only explanation could be that you aren't linking to the Qt5 libraries, but e.g. Qt4 instead. This is easy to verify with QtCreator on the 'Projects' page. "QMetaObject::connectSlotsByName: No matching signal for ... QMetaObject::connectSlotsByName: No matching signal for on_MainWindow_destroyed() It means you have an automatically named slot method in the main window or top-level widget. Qt will automatically connect slots for child widgets, but not the top-level widget. To solve this problem, you need to: Rename the slot so it doesn't start with "on_"