hwndFrame (HWND) - input

      Frame-window handle.

    prcl (PRECTL) - in/out

      Window rectangle.

      Note: The value of each field in this structure must be in the range -32 768 through 32 767. The data type WRECT can also be used, if supported by the language.

    fClient (BOOL) - input

      Frame indicator.

      TRUE

        Frame rectangle provided
      FALSE
        Client-area rectangle provided.

      rc (BOOL) - returns

        Rectangle-calculated indicator.

        TRUE

          Rectangle successfully calculated
        FALSE
          Error occurred, or the calculated rectangle is empty.

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