Frameless window, showMinimized() does not work

Manifolds

MacOS version: 10.13.2
Qt： 5.9.3 and 5.10

Window flags: setWindowFlag(Qt::FramelessWindowHint);

The showMinimized() function dos not work.

I added cocoa implements,

 NSView* view = (NSView*)this->winId();
 if (0 == view) {return;}
 NSWindow *window = view.window;
 if (0 == window) {return;}
 [window performMiniaturize:nil];

It does not work either.

SGaist

Hi,

Please provide a complete minimal compilable example to reproduce the behavior.

Manifolds

@SGaist

It is very simple.
Just create an simple project via wizard, drag a pushbutton to the centerwidget.
and then setWindowFlag(Qt::FramelessWindowHint);, then connect the signal clicked of the button to slot showMinimized() of mainwindow.

If you wan to implement cocoa code shown in my first post, you can add new objc++ source file, and implement the slot function in this objc++ file.

SGaist

I know it’s not complicated hence my query so we are all working with the same code base.

Manifolds

@SGaist
mainwindow.hh

#ifndef MAINWINDOW_HH
#define MAINWINDOW_HH

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

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

private slots:
    void on_pushButton_clicked();

private:
    Ui::MainWindow *ui;
};

#endif // MAINWINDOW_HH

mainwindow.cc

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

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    setWindowFlag(Qt::FramelessWindowHint);
}

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

void MainWindow::on_pushButton_clicked()
{
    showMinimized();
}

mainwindow.ui

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="enabled">
   <bool>true</bool>
  </property>
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>400</width>
    <height>300</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralWidget">
   <layout class="QHBoxLayout" name="horizontalLayout">
    <item>
     <widget class="QPushButton" name="pushButton">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
  <widget class="QMenuBar" name="menuBar">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>400</width>
     <height>22</height>
    </rect>
   </property>
  </widget>
  <widget class="QToolBar" name="mainToolBar">
   <attribute name="toolBarArea">
    <enum>TopToolBarArea</enum>
   </attribute>
   <attribute name="toolBarBreak">
    <bool>false</bool>
   </attribute>
  </widget>
  <widget class="QStatusBar" name="statusBar"/>
 </widget>
 <layoutdefault spacing="6" margin="11"/>
 <resources/>
 <connections/>
</ui>

#include "mainwindow.hh"
#include <QApplication>
#include <QWidget>

int main(int argc, char *argv[])
{
    QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
    QApplication a(argc, argv);
    MainWindow w;
    w.show();

    return a.exec();
}

SGaist

I'm not yet on 10.13.2 however I can't reproduce that on my 10.12.6, it works as expected.

Manifolds

@SGaist

You are so funny

SGaist

Might be related to QTBUG-65265