hasFocus() ??

[Duy Khang]

how to check a lineEdit or a pushButton has focus ? ();
i used ui->lineEdit_username->hasFocus(), but it does'n work .
someone cans tell me why ?

[JonB]

@Duy-Khang said in hasFocus() ??:

but it does'n work .

Well, I would imagine it does work, else others would complain?! How does your situation compare to, say, https://stackoverflow.com/questions/46702487/how-can-i-get-current-focused-qlineedit-in-qt ?

[Duy Khang]

@JonB said in hasFocus() ??:

Well, I would imagine it does work, else others would complain?! How does your situation compare to, say

not like that. suppuse :
ui->lineEdit_username->setFocus();
if(ui->lineEdit_username->hasFocus())
{
ui->lineEdit_username->setStyleSheet("color : red"); // it still doesn't work ?
}

[JonB]

@Duy-Khang
Please just put in

if(ui->lineEdit_username->hasFocus())
    qDebug() << "Yes has focus";

[Duy Khang]

it stil does not work !

[mrjj]

Hi
Useing code to check for fucus will work poorly if used in constructor and code must be run every time
focus shifts so it's easier to do with stylesheet alone.

QLineEdit:focus {
color:red;
}