c++ - "No such slot" when trying to use QTimer - Stack ... So in that case, how would I use the QTimer object to run a method that takes an arbitrary parameter after some amount of time? – user189320 Dec 9 '11 at 15:04 You can't do that. What you can is store that arbitrary parameter as state somewhere (for example, a member in the class which has the slot colorGUI). QTimer::singleShot() looks for the specified slot in the ... I expected the program to print "timeout called" one second after startup. Unfortunately, this doesn't work. When QTimer::singleShot() is called, the console says: Object::connect: No such slot QApplication::timeout() in [path to the main.cpp file] Object::connect: (receiver name: 'QtTests') I have no idea how to deal with this. Thank you in ... QTimer::singleShot - forward parameter to SLOT called | Qt ...
Compiling Qt5 for Raspberry Pi
New Signal Slot Syntax - Qt Wiki New Signal Slot Syntax. From ... The other problem is that there is no automatic disconnection for some object in the ... lookupHost or QTimer::singleShot or ... Function Pointer Syntax / Lambda support for QTimer ... Function Pointer Syntax / Lambda support for QTimer ... to have function pointer syntax and lambda support for QTimer::singleShot() as ... There are no open Gerrit ... [QTBUG-69800] QTimer::singleShot() requires a non-const ... The documentation of QTimer::singleShot() states that the context/receiver should be a const pointer to QObject. This is consistent with e.g. QObject::connect().
QTimer Class Reference | singleShot (int msec, callable…
How Qt Signals and Slots Work - Part 2 - Qt5 New Syntax This is the sequel of my previous article explaining the implementation details of the signals and slots. In the Part 1, we have seen the general principle and how it works with the old syntax.In this blog post, we will see the implementation details behind the new function pointer based syntax in Qt5.
The QTimer class provides timer signals and single-shot timers. ... to use: create a QTimer, call start() to start it and connect its timeout() to the appropriate slots. ... does not support such high-level features as single-shot timers or signals. ... who prefer man pages, although this format is not officially supported by Trolltech.
При определённом событии запускаю таймер, который начинает отсчёт времени. По истечении этого времени должна быть вызвана функция, принимающая в качестве аргумента номер события, который запустил таймер. Qt - QTimer::singleShot simple usage | qt Tutorial
how to pass arguments to QTimer::singleshot slot | Qt Forum
72, QTimer::singleShot() function to call a slot after a specified ... 82, must start and stop the timer in its thread; it is not possible to ... In such a case of timeout. Qt Signal/Slot Connectons - Qt Centre ... stating what the problem is: Object::connect: No such signal QApplication:: nonexistantsignal() ... QTimer::singleShot( 10000, this, SLOT(doSomething(10)));
In addition to the Qt3Support classes (such as Q3Action , Q3ListBox , and Q3ValueList ), Qt 4 provides compatibility functions when it's possible for an old API to cohabit with the new one.