[Qt-interest] line edit focus problem

[Tony Rietwyk]

-----Original Message-----

Hi All 
 
I have set the line edit text  as default by "Dial number"
 
When i pressing the keys in keyboard ,then  i am clearing the  lineedit text
and inserting the pressed key value in line edit..
 
if i set lineEdit in setfocusby default..
 
that time any key events is not uptating ..
 
if diable the forucs for line edit.. key event are updating..
 
Sample code..
 
ui.lineEdit.setText("Dial Number")
 
void MainWindow::keyPressEvent(QKeyEvent *e)
{
   switch(e->key)
     {
        case Key_0 : 
                             if(ui.lineEdit.Text == "Dial Number")
                              {
                               ui.lineEdit.clear }
          ui.lineEdit.insert("0");
           break;
      case Key_1 :  
                             if(ui.lineEdit.Text == "Dial Number")
                              {
                               ui.lineEdit.clear }
          ui.lineEdit.insert("1");
}
}
 
Please help , what's wrong with me
 
 
Thanks
 
Yuvaraj R
                    

There is nothing wrong! 
 
You are listening to the events on the main window, and it only gets the key
strokes when the edit doesn't have focus.  
 
I suggest to either:
 
- use the same code, but subclass from QLineEdit, 
- or use
 
    ui.lineEdit->installEventFilter( this );
 
and override the eventFilter method in MainWindow. 
 
I normally take the second option. 
 
Tony.
 
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