/* $Id: hmnul.h,v 1.2 2001-12-05 14:16:03 sandervl Exp $ */

/*
 * Project Odin Software License can be found in LICENSE.TXT
 *
 * Win32 NUL device access class
 *
 * 2001 Patrick Haller <patrick.haller@innotek.de>
 *
 */

#ifndef _HM_NUL_H_
#define _HM_NUL_H_

class HMDeviceNulClass : public HMDeviceHandler
{
  public:

  HMDeviceNulClass(LPCSTR lpDeviceName);

  //checks if device name belongs to this class
  virtual BOOL FindDevice(LPCSTR lpClassDevName, LPCSTR lpDeviceName, int namelength);

  /* this is the handler method for calls to CreateFile() */
  virtual DWORD  CreateFile (LPCSTR        lpFileName,
                             PHMHANDLEDATA pHMHandleData,
                             PVOID         lpSecurityAttributes,
                             PHMHANDLEDATA pHMHandleDataTemplate);

  /* this is the handler method for calls to CloseHandle() */
  virtual BOOL CloseHandle(PHMHANDLEDATA pHMHandleData);
  
  /* this is a handler method for calls to DeviceIoControl() */
  virtual BOOL   DeviceIoControl    (PHMHANDLEDATA pHMHandleData, DWORD dwIoControlCode,
                                     LPVOID lpInBuffer, DWORD nInBufferSize,
                                     LPVOID lpOutBuffer, DWORD nOutBufferSize,
                                     LPDWORD lpBytesReturned, LPOVERLAPPED lpOverlapped);
  
  
  /* this is a handler method for calls to ReadFile/Ex */
  virtual BOOL   ReadFile   (PHMHANDLEDATA pHMHandleData,
                             LPCVOID       lpBuffer,
                             DWORD         nNumberOfBytesToRead,
                             LPDWORD       lpNumberOfBytesRead,
                             LPOVERLAPPED  lpOverlapped,
                             LPOVERLAPPED_COMPLETION_ROUTINE  lpCompletionRoutine);

  /* this is a handler method for calls to WriteFile/Ex */
  virtual BOOL   WriteFile  (PHMHANDLEDATA pHMHandleData,
                             LPCVOID       lpBuffer,
                             DWORD         nNumberOfBytesToWrite,
                             LPDWORD       lpNumberOfBytesWritten,
                             LPOVERLAPPED  lpOverlapped,
                             LPOVERLAPPED_COMPLETION_ROUTINE  lpCompletionRoutine);

  private:
};


#endif // _HM_NUL_H_