File content as of revision 0:1bf8f02b0770:

/*********************************************************************
*                SEGGER Microcontroller GmbH & Co. KG                *
*        Solutions for real time microcontroller applications        *
**********************************************************************
*                                                                    *
*        (c) 1996 - 2014  SEGGER Microcontroller GmbH & Co. KG       *
*                                                                    *
*        Internet: www.segger.com    Support:  support@segger.com    *
*                                                                    *
**********************************************************************

** emWin V5.24 - Graphical user interface for embedded applications **
All  Intellectual Property rights  in the Software belongs to  SEGGER.
emWin is protected by  international copyright laws.  Knowledge of the
source code may not be used to write a similar product.  This file may
only be used in accordance with the following terms:

The software has been licensed to  NXP Semiconductors USA, Inc.  whose
registered  office  is  situated  at 411 E. Plumeria Drive, San  Jose,
CA 95134, USA  solely for  the  purposes  of  creating  libraries  for
NXPs M0, M3/M4 and  ARM7/9 processor-based  devices,  sublicensed  and
distributed under the terms and conditions of the NXP End User License
Agreement.
Full source code is available at: www.segger.com

We appreciate your understanding and fairness.
----------------------------------------------------------------------
File        : KNOB.h
Purpose     : KNOB include
--------------------END-OF-HEADER-------------------------------------
*/

#ifndef KNOB_H
#define KNOB_H

#include "WM.h"
#include "DIALOG_Intern.h"      // Req. for Create indirect data structure
#include "WIDGET.h"
#include "GUI_Debug.h"

#if (GUI_SUPPORT_MEMDEV && GUI_WINSUPPORT)

#if defined(__cplusplus)
  extern "C" {                  // Make sure we have C-declarations in C++ programs
#endif

/*********************************************************************
*
*       Public Types
*
**********************************************************************
*/
typedef WM_HMEM KNOB_Handle;

/*********************************************************************
*
*       Create functions
*
**********************************************************************
*/
KNOB_Handle KNOB_CreateEx      (int x0, int y0, int xSize, int ySize, WM_HWIN hParent, int WinFlags, int Id);
KNOB_Handle KNOB_CreateUser    (int x0, int y0, int xSize, int ySize, WM_HWIN hParent, int WinFlags, int Id, int NumExtraBytes);
KNOB_Handle KNOB_CreateIndirect(const GUI_WIDGET_CREATE_INFO * pCreateInfo, WM_HWIN hWinParent, int x0, int y0, WM_CALLBACK * cb);

/*********************************************************************
*
*       The callback ...
*
* Do not call it directly ! It is only to be used from within an
* overwritten callback.
*/
void KNOB_Callback(WM_MESSAGE * pMsg);

/*********************************************************************
*
*       Member functions
*
**********************************************************************
*/
void KNOB_AddValue   (KNOB_Handle hObj, I32 Value);
int  KNOB_GetUserData(KNOB_Handle hObj, void * pDest, int NumBytes);               // Gets user defined data
I32  KNOB_GetValue   (KNOB_Handle hObj);                                           // Returns the position of the knob in tenth of degree
void KNOB_SetBkColor (KNOB_Handle hObj, GUI_COLOR Color);                          // Sets the BK color of the widget
void KNOB_SetBkDevice(KNOB_Handle hObj, GUI_MEMDEV_Handle hMemBk);                 // Sets the background device
void KNOB_SetDevice  (KNOB_Handle hObj, GUI_MEMDEV_Handle hMemSrc);                // Sets the memory device with the drawn knob
void KNOB_SetKeyValue(KNOB_Handle hObj, I32 KeyValue);                             // Sets the value the knob will rotate on one key press
void KNOB_SetOffset  (KNOB_Handle hObj, I32 Offset);                               // Sets the offset angle of the knob
void KNOB_SetPeriod  (KNOB_Handle hObj, I32 Period);                               // Sets the period in which the knob stops
void KNOB_SetPos     (KNOB_Handle hObj, I32 Pos);                                  // Sets position of the knob in tenth of degree
void KNOB_SetRange   (KNOB_Handle hObj, I32 MinRange, I32 MaxRange);               // Sets the usable range of the knob widget
void KNOB_SetSnap    (KNOB_Handle hObj, I32 Snap);                                 // Sets Snap positions where the knob stops
void KNOB_SetTickSize(KNOB_Handle hObj, I32 TickSize);                             // Sets the ticksize, in 1/10 of degree
int  KNOB_SetUserData(KNOB_Handle hObj, const void * pSrc, int NumBytes);          // Sets user defined data

/*********************************************************************
*
*       Global functions
*
**********************************************************************
*/

#if defined(__cplusplus)
  }
#endif

#endif  // (GUI_SUPPORT_MEMDEV && GUI_WINSUPPORT)
#endif  // KNOB_H

/*************************** End of file ****************************/