WindowSystemMenuHint strange bug

[Engelard]

Why that stuff even enabled by default...

[Engelard]

Maybe anybody knows another way to hide that button?

[aha_1980]

@Engelard isn't that ...HelpButtonHint?

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

[Engelard]

@aha_1980 said in WindowSystemMenuHint strange bug:

which type of widget is your dialog?

QDialog

[mrjj]

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.

[Engelard]

@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()

2. 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));

[mrjj]

@Engelard
Oh, must be from dialog :)

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

[mrjj]

Not all combinations works all types of windows.

[Engelard]

@mrjj i tried at first from my object(child dialog), not working, tried, can't understand why.

[mrjj]

Hi
I tried

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

[Engelard]

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);

[Engelard]

@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...

[mrjj]

@Engelard
ok, odd. worked for my dialog.