How in the Centos system of QMainWindow QDialog add Qt::WindowContextHelpButtonHint

[roy815]

Development environment：c++11 qt5.12 centos
My needs： add Qt::WindowContextHelpButtonHint in QMainWindow and QDialog
what i have done but no effect：setWindowFlags(Qt::CustomizeWindowHint|Qt::WindowContextHelpButtonHint | Qt::WindowCloseButtonHint );

[jsulm]

@roy815 said in How in the Centos system of QMainWindow QDialog add Qt::WindowContextHelpButtonHint:

setWindowFlags(Qt::CustomizeWindowHint|Qt::WindowContextHelpButtonHint | Qt::WindowCloseButtonHint );

You're overwriting the flags, it should be:

setWindowFlags(flags() | Qt::CustomizeWindowHint|Qt::WindowContextHelpButtonHint | Qt::WindowCloseButtonHint );

Also, is for dialogs and you should read the documentation:
"Adds a context help button to dialogs. On some platforms this implies Qt::WindowSystemMenuHint for it to work."

[roy815]

@roy815 said in How in the Centos system of QMainWindow QDialog add Qt::WindowContextHelpButtonHint:

Development environment：c++11 qt5.12 centos
My needs： add Qt::WindowContextHelpButtonHint in QMainWindow and QDialog
what i have done but no effect：setWindowFlags(Qt::CustomizeWindowHint|Qt::WindowContextHelpButtonHint | Qt::WindowCloseButtonHint );

I have tried that what you say yesterday,but no effect too.I looked up a lot of information on the Internet, there is no relevant solution.May be ,In Linux, it is not possible to add a context help button to dialogs or mainwindow.