<![CDATA[WindowSystemMenuHint strange bug]]>Hi everybody. I just added new fresh .ui file with class which inherits QDialog for extra window of my main project. Add in ui some layout and labels, it looks as it should, everything ok on the following screenshot:

0_1540970770088_proper.jpg

But when i try to remove that unnecessary MenuHint(question mark) like that:

myNewDialog->setWindowFlags(Qt::WindowSystemMenuHint);

Or. By adding such thing in to constructor of that child dialog:

this->setWindowFlags(Qt::WindowSystemMenuHint);

The window will start looking, i would say, strange:

0_1540970976451_unproper.jpg

The code in constructor of my main class:

myNewDialog = new FinalResult(this);   //class of child window
myNewDialog->show();
]]>https://forum.qt.io/topic/96133/windowsystemmenuhint-strange-bugRSS for NodeMon, 13 Jul 2026 02:50:33 GMTWed, 31 Oct 2018 07:32:03 GMT60<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 12:10:31 GMT]]>@Engelard
ok, odd. worked for my dialog.

]]>https://forum.qt.io/post/490580https://forum.qt.io/post/490580Thu, 01 Nov 2018 12:10:31 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 11:53:34 GMT]]>@mrjj said in WindowSystemMenuHint strange bug:

Hi
I tried

I try that stuff long ago, no efforts of doing that attempts from the constructor of child QDialog were paid...

]]>https://forum.qt.io/post/490573https://forum.qt.io/post/490573Thu, 01 Nov 2018 11:53:34 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 11:49:44 GMT]]>Lol i figure it out, with little help of Qt documentation and imagination:

resultsWindow = new FinalResult(this);
Qt::WindowFlags flags = 0;
flags = Qt::Dialog;

resultsWindow->setWindowFlags(flags |= Qt::WindowSystemMenuHint); // question mark removed, but close button now disabled
resultsWindow->setWindowFlag(Qt::WindowCloseButtonHint, true);
]]>https://forum.qt.io/post/490570https://forum.qt.io/post/490570Thu, 01 Nov 2018 11:49:44 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 11:43:18 GMT]]>Hi
I tried

CustomDialog::CustomDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::CustomDialog)
{
    ui->setupUi(this);
    setWindowFlags(Qt::WindowSystemMenuHint | Qt::WindowTitleHint | Qt::WindowCloseButtonHint);
}

alt text

]]>https://forum.qt.io/post/490568https://forum.qt.io/post/490568Thu, 01 Nov 2018 11:43:18 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 11:36:38 GMT]]>@mrjj i tried at first from my object(child dialog), not working, tried, can't understand why.

]]>https://forum.qt.io/post/490566https://forum.qt.io/post/490566Thu, 01 Nov 2018 11:36:38 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 11:31:02 GMT]]>Not all combinations works all types of windows.

]]>https://forum.qt.io/post/490563https://forum.qt.io/post/490563Thu, 01 Nov 2018 11:31:02 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 11:30:04 GMT]]>@Engelard
Oh, must be from dialog :)

myNewDialog->setWindowFlags(myNewDialog->windowFlags() & (~Qt::WindowSystemMenuHint & ~Qt::WindowMaximizeButtonHint));

]]>https://forum.qt.io/post/490562https://forum.qt.io/post/490562Thu, 01 Nov 2018 11:30:04 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Thu, 01 Nov 2018 11:29:30 GMT]]>@mrjj

Very good stuff. But.

  1. as i understand, it set it from windowFlags() which comes from parent, it do totally no effect if i would try set it up from it's own flags:
myNewDialog->windowFlags()
  1. As it appliable only from parent(QMainWindow), it adds maximize and minimize hints, maximize is unnecessary, so i tried to remove it, but it only disable it, not hide:
myNewDialog->setWindowFlags(windowFlags() & (~Qt::WindowSystemMenuHint & ~Qt::WindowMaximizeButtonHint));
]]>https://forum.qt.io/post/490561https://forum.qt.io/post/490561Thu, 01 Nov 2018 11:29:30 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Wed, 31 Oct 2018 22:15:00 GMT]]>Hi
The reason for the odd look is due to you remove all its flags
setWindowFlags(Qt::WindowSystemMenuHint);
Now ONLY WindowSystemMenuHint is set. not Dialog and all the others it needs.
You need to do
setWindowFlags(windowFlags() & ~Qt::WindowSystemMenuHint);
which takes the current flags and bitwise disable only hint.

]]>https://forum.qt.io/post/490463https://forum.qt.io/post/490463Wed, 31 Oct 2018 22:15:00 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Wed, 31 Oct 2018 20:06:55 GMT]]>@aha_1980 said in WindowSystemMenuHint strange bug:

which type of widget is your dialog?

QDialog

]]>https://forum.qt.io/post/490430https://forum.qt.io/post/490430Wed, 31 Oct 2018 20:06:55 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Wed, 31 Oct 2018 18:38:40 GMT]]>@Engelard isn't that ...HelpButtonHint?

which type of widget is your dialog? it may be the platform defaiult to show it.

]]>https://forum.qt.io/post/490412https://forum.qt.io/post/490412Wed, 31 Oct 2018 18:38:40 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Wed, 31 Oct 2018 18:10:39 GMT]]>Maybe anybody knows another way to hide that button?

]]>https://forum.qt.io/post/490408https://forum.qt.io/post/490408Wed, 31 Oct 2018 18:10:39 GMT<![CDATA[Reply to WindowSystemMenuHint strange bug on Wed, 31 Oct 2018 08:38:21 GMT]]>Why that stuff even enabled by default...

]]>https://forum.qt.io/post/490260https://forum.qt.io/post/490260Wed, 31 Oct 2018 08:38:21 GMT