showNormal, activateWindow, raise does not work

asd777

I tried to run showNormal, activateWindow, raise but this command does not work.

How can I change the size of a window from minimized to normal? I mean I has minimized window and I want to see this window in normal way. But how?

This is video of my program (you can see that I run my program in minimized form and I wan not able to run this program in normal way) link text

mainwindow.h

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

#include <QWidget>

#include <QTimer>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    ~MainWindow();
    QTimer *timer;

public slots:
    void MyTimerSlots();


private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_H

mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"


#include <QDebug>

#include <QStyle>
#include <QDesktopWidget>

#include <QTime>
#include <QDate>

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QRect r1(QApplication::desktop()->screenGeometry(this).center().x()-300,
           QApplication::desktop()->screenGeometry(this).center().y()-300, 100, 200);

    setGeometry(r1);
    srand(std::time(0));
    showMinimized();

    QTimer *timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(MyTimerSlots()) );
    timer->start(5000);
}

MainWindow::~MainWindow()
{
    delete ui;
}

 void MainWindow::MyTimerSlots()
{
    qDebug() << "Timer..."<<QTime::currentTime().minute();

    //MainWindow::showFullScreen();

    showNormal();
    MainWindow::activateWindow();
    MainWindow::raise();

    //MainWindow::activateWindow();

}

raven-worx

@asd777
untested:

if( w->windowState() & Qt::WindowMinimized )
    w->setWindowState( Qt::WindowNoState );
w->activateWindow();

asd777

This code does not work if I add this code to the function MyTimerSlots: (windows remain minimized)

void MainWindow::MyTimerSlots()
{
    qDebug() << "Timer..."<<QTime::currentTime().minute();

    //showNormal();
    //raise();
    //activateWindow();

    if( MainWindow::windowState() & Qt::WindowMinimized )
        MainWindow::setWindowState( Qt::WindowNoState );
    MainWindow::activateWindow();

}

raven-worx

@asd777
on what OS are you running on?
Maybe the window system doesn't allow it

asd777

I use Ubuntu 16.04. Ubuntu is one of the most popular Linux distro.

mrjj

@asd777
If possible, test on something beside Unity Desktop.
KDE or XFCE to see if it works there.

Update:
Tried in Linux Mint 18.1 and it did work.
The windows popped after 5 secs.