Windows SDK: What is an overlapped window?

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Q: What is an overlapped window?

A: An overlapped window is a top-level window that has a caption (title bar), border and client area.
It is created by specifying WS_OVERLAPPED style in CreateWindow or CreateWindowEx function.

Notes

• overlapped windows are generally used as application's main window;
• WS_OVERLAPPED constant is defined in winuser.h and has a value of 0 (zero);
• in practice is used the composite style WS_OVERLAPPEDWINDOW instead of WS_OVERLAPPED;
  this adds sizing border, system menu, and minimize and maximize buttons.
  

  #define WS_OVERLAPPEDWINDOW (WS_OVERLAPPED     | \
                               WS_CAPTION        | \
                               WS_SYSMENU        | \
                               WS_THICKFRAME     | \
                               WS_MINIMIZEBOX    | \
                               WS_MAXIMIZEBOX)

See also

• Windows SDK: What is a top-level window?