QT installer worked coding not give result

[pradeepsimba]

I download the app wifimouse for windows.

wifimouse app fully build with qt.

Source code of wifimouse server application

I install and run wifimouse app in my computer it works perfectly and all the options are works smoothly.

But, If I run the same code in my computer it not works properly.

For example ; In wifimouse application there is an option for brightness controling

Brightness code

error comes like this. But , it works smoothly in downloaded installer from here

Problem with qt in getting outputs.

My project

I want to get the cpu usage , ram usage ,process list and app list with qt.

In Windows

I am getting ram usage from this code.

But app list , cpu usage and process outputs are not showed.

In linux

In linux the cpu usage output not showed.

In Mac

In mac the app list output not showed.

Why this problem occured ?