lCode (LONG) - input

      Type of window information.

      Determines what window information is returned:

      QW_NEXT

        Next window in z-order (window below).
      QW_PREV
        Previous window in z-order (window above).
      QW_TOP
        Topmost child window.
      QW_BOTTOM
        Bottommost child window.
      QW_OWNER
        Owner of window.
      QW_PARENT
        Parent of window.
      QW_NEXTTOP
        Returns the next window of the owner window hierarchy subject to their z-ordering.

        The enumeration is evaluated in this order:

        • The hierarchy of windows owned by this window in their z-order.
        • The hierarchy of windows of the next z-ordered window having the same owner as this window.
        • The hierarchy of windows in their z-order having the same owner as the owner of this window. This step is repeated until the top of the owner tree for this window is reached.
        • The hierarchy of windows in their z-order of unowned windows.
        QW_PREVTOP
          Returns the previous main window, in the enumeration order defined by QW_NEXTTOP.
        QW_FRAMEOWNER
          Returns the owner of hwnd normalized so that if shares the same parent as hwnd.

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