Empty Line Edit Validation

[abgokbayrak]

Hello,


I'm newbie at Qt.

I want to control line edit to understand it is empty or not, when a push button is pressed. How can I implemet it ?

Best regards....

[NullPointer]

Hello!!

From line edits you can take the text by using QLineEdit::text(). Once you done that, you will receive a http://doc.qt.io/qt-4.8/QString, which has the isEmpty method.

Take a look:

QLineEdit * le=new QLineEdit();
if(le->text().isEmpty()){
   //no text inside... Or only spaces
}else{
  //some valid non-space text inside.
}

QLineEdit * le=new QLineEdit();
if(le->text().isEmpty()){
   //no text inside... Or only spaces
}else{
  //some valid non-space text inside.
}

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HTH.