Qt get active text box

Question

If I have two text boxes in my main window how can I check which one is active/being used by the user?

[That][1] should be a good start point to start from... [1]: http://stackoverflow.com/questions/321656/when-a-qt-widget-gets-focus — evilruff, Aug 06 '13 at 20:44

score 3 · Answer 1 · answered Aug 07 '13 at 06:29

You can use QApplication::focusWidget() function to see which widget currently has focus.

Or you can use the QWidget::hasFocus() function to see if your text box has focus.

   edit_A = new QTextEdit(this);
   edit_B = new QTextEdit(this);
   .
   .
   .
void MyClass::someFunction()
{
   if(edit_A->hasFocus())
      //edit_A is being used
   else if(edit_B->hasFocus())
      //edit_B is being used
}

score 0 · Answer 2 · answered Aug 07 '13 at 07:55

The previous answer is right but just in case you want to monitor more components you can use

QWidget * QApplication::focusWidget ()

to get widget with focus.

This approach will allow you to make cleaner code if you wanted to have more widgets monitored. Instead of having a ladder of ifs just use some kind of look-up table to choose what action to take.

Qt get active text box

2 Answers2