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QT C++ GUI Tutorial 3- Qt Signal and slots (QSlider and QProgressBar)

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How Qt Signals and Slots Work Understanding Signals and Slot in Qt Signals and slots C++ GUI with Qt Tutorial Searches related to qt signal and slots qt signal and slots tutorial qt4 signals and slots qt connect signal to signal qt signal slot example qt add slot qt create slot emit qt qt slot arguments How to create button click event Connecting signals and slots by name at runtime signals/slots and namespaces More results from www.qtforum.org
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Text Comments (15)
ahmo ahmic (2 months ago)
How to create singal and slot for oposite way example:value of slider is 30 and value of progressbar is 70 and oposite way
Mashiro tham (5 months ago)
Can someone help me why there is no matching member function for call to 'connect' ?
Shweta Badade (5 months ago)
How to make circular slider
TheEmeraldBlock TEB (10 months ago)
Is this free trial or Open source?
Muqdad linux (11 months ago)
Thank you
Robert Bhandari (1 year ago)
speed 1.25 really helps.
DUVAN GIRALDO AVENDANO (2 years ago)
Thanks a lot for the video, I understood very well. You explain with the right speed in order to let us learning correctly. Thanks also for showing important datails.
Desi Anday (2 years ago)
how to signal from QThread and slot it back in progress dialog on main gui??
Arnold (2 years ago)
SIGNAL was not declared in this scope?
Zer0Mem0ry (3 years ago)
The "go to slot" seems to be missing...
Trung-Nam Dang (3 years ago)
Thanks bro.
Farhan Azam Chohan (3 years ago)
Will our QT program run on any Computer except the one it's being developed ? Because I have seen a classmate installing QT on a Lab computer to run his QT based Project.
THUNDERBOLT (3 years ago)
+Farhan Azam yes it will run on anycomputer but you have to build the program or something
Naampie2000 (4 years ago)
Thanks mate!
perry love (5 years ago)
The way I do this in code is to go to the horizontal slider, right click, "go to slot". That brings up a dialog, I select valueChanged, and do this: It automatically creates the method, all you have to do is add "ui->progressBar->setValue(value);" between the braces. This keeps all code for that event in the same place - so if you want to do a lot of things when the value is changed, you do them all here. I don't use the visual way because it's not visible in code. void MainWindow::on_horizontalSlider_valueChanged(int value) { ui->progressBar->setValue(value); }

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