WinCE 驱动文件WriteFile

// 定义 DLL 应用程序的入口点。

#include <windows.h>
#include <commctrl.h>
#ifndef eq_power_H_ 
#define eq_power_H_

 //定义导出函数   

  extern "C" __declspec(dllexport)  void eq_power(int onoff);

#endif


 HANDLE hStr;


extern "C" BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved
)
{
    return TRUE;
}




  void eq_power(int onoff)
  { 
DWORD  dwWritten = 0;
hStr = CreateFile(TEXT("KBD1:"), GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, 0);
//if(onoff==1)
WriteFile(hStr, &onoff, 1, &dwWritten, NULL);
     CloseHandle(hStr);
  }