Disable QDialogs default close button (upper left “cross button”)?

Question

Is it possible to disable/delete the QDialogs default close button at the upper left of the dialog?

Answer 1

Clearing WindowCloseButtonHint in WindowFlags may do what you want. Check out the example here.

Answer 2

Try setWindowFlags(Qt::Dialog | Qt::FramelessWindowHint | Qt::WindowTitleHint); . You may want to check the Window Flags Example, and play around to see effects of all possible combinations of WindowFlags

Answer 3

At least in (embedded) Linux, you can do this:

setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint);

With that, I get a window which has the title but no buttons.

Answer 4

Use this function for your dialog

dlgLobLobLob->setWindowFlags(Qt::Dialog | Qt::Desktop)