Any good QT and QML examples for newbies?

[bozz]

Hello everyone,

I am looking to make a QT and QML app with the following structure.
The app will run two CLI apps in the background. I have the c++ code for both apps.

I want to have two buttons that trigger the apps.
I want one input box that can pass a variable to the CLI app.

I want some text boxes that store the latest output the CLI apps return.

Are there any good examples for complete beginners that illustrate this?
I basically want to be able to tie up some buttons to some CLI code, in both QML and QT.

Thank you if you can help at all

Edit: perhaps there could be a main c++ "app" that handles the other c++ code?

[SGaist]

Hi,

No there's no example that does exactly what you describe. However the QML book is very good source to get started.

Then take a look at the C++ integration part and QProcess.

[bozz]

Thank you for the quick reply. I will do more reading into it. Thank you!

To be more specific, my c++ "apps" are quite simple.
One app for instance takes a command line text argument, validates the text and prints out the result at the end.

I use "int main(int argc, char *argv[])"

It is all very basic. I would like to have some of these basic apps run side by side in the background. Is that a big issue? Will I need to consider things like threadings and timing of the code execution?

Also, a very big question is debugging. Can I have the "c++ apps" open in terminal output windows next to the GUI while I am developing?

[SGaist]

I thought you wanted to execute these apps from within your Qt Quick based app. Is it not the case ?

[bozz]

Well yes. I want to integrate the apps and execute them from within the qt GUI.

Edit: I am going to read up on it more. I was just thinking there might be a very newbie friendly way to do that.

Is there an obvious way to debug an app to see what is happening "in the background"? Can I have my c++ app run in the terminal window beside the GUI just to see if everything is working as it should? The rest I will figure out myself.

[SGaist]

Ok, but what kind of window do you want them to open since they are console application ?

[bozz]

I would like to see a console next to the gui, but only during debugging

[SGaist]

If it's only to see what your application is outputting, then you can connect the standard output and error related signals of QProcess and show the content of these two channels on a text edit control for example.

[bozz]

would this show me everything print() shows?

[SGaist]

That's the goal of reading stdout