How to resize the main window again after setFixedSize

[CorD SaC]

In my code I set fixed size for main window If i open .mp3 file,now I need to resize main window if i open another file format. how to enable resize if I open any other file format

this is my code.

void MainWindow::on_actionOpen_triggered()
{
  QString filename= QFileDialog::getOpenFileName(this,"Open Folder","","Open a File(*.*)");
  on_actionStop_triggered();
   player->setMedia(QUrl::fromLocalFile(filename));
   on_actionPlay_triggered();

    if(filename.endsWith(".mp3")){
        qDebug() << " file is mp3";
        this->setFixedSize(648,425);

    }else{
        this->setFixedSize(this->sizeHint()); //this not working. 
    }
}

[mrjj]

Hi
It does work. check your values :)

just tested this

ctor
{
  ui->setupUi(this);
  setFixedSize(300,300);
}


void MainWindow::on_pushButton_released()
{
    setFixedSize(500,500);
}

and it goes to 500x500 when i click

[CorD SaC]

According to your code If I set like this setFixedSize(500,500); form resize 500x500 but I need to resize my mainwindow using mouse as a default way

[samdol]

Why don't you use resize(int w, int h) function instead of setFixedSize(w,h) at the first place?