Hi,

I want to poll continuously some hardware functions like ..

Qt Code: 
  1. main(int argc, char *argv[])
  2. {
  3.      Widget w;              // Widget Class
  4.      QApplication a(argc, argv);
  5.      while (1)
  6.     {
  7.            //functions to poll continuously 
  8.     }
  9.  
  10.    w.show();
  11.    a.exec();
  12.  
  13. }
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If i execute above code it doesn't show widget on the display, I understand that a.exec() should execute to enter in to the event loop.

But if i write like this...

Qt Code: 
  1. main(int argc, char *argv[])
  2. {
  3.      Widget w;              // Widget Class
  4.      QApplication a(argc, argv);
  5.  
  6.       w.show();
  7.      while (1)
  8.     {
  9.            //functions to poll continuously 
  10.  
  11.  
  12.        a.exec();
  13.     }
  14.  
  15. }
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in while loop only execute once, and then a.exec() wait for the event.
How can I run while loop continuously to poll some function.
Is it mean that I need to start QTimer and need timer event every time?

Or is there any other way that can use while loop?

With Regards,
Nirav