The method of setting the maximum and minimum of Qt program window

when Qt generates a dialog-based program, the top-right corner of the program is not maximized, and the button is minimized. You can then use the following code:

Setwindowflags (Windowflags () | Qt::windowmaximizebuttonhint);

Setwindowflags (Windowflags () | Qt::windowminimizebuttonhint);

If you need to maximize a program run, you can add the following code:

Setwindowstate (qt::windowmaximized);

If you do not want the window size to change, you can use the following function to fix the window size.

Setfixedsize ();

The method of setting the maximum and minimum of Qt program window