How to disable close button?

Question

C++ / C#

Please tell us how to do this, do I need to make the close button, which is located along with minimize and expand, inactive, via WinApi? And does it work in windows 8?

Answer 1

Not sure about Windows 8 but give it a try..

void DisableCloseButton(HWND hwnd)
{
    EnableMenuItem(GetSystemMenu(hwnd, FALSE), SC_CLOSE, MF_BYCOMMAND | MF_DISABLED | MF_GRAYED);
}