return an integer value from vc++ to c# wcf

Question

hi all,

       I have to return an integer value from vc++ to c# wcf .in vc++ the function works fine but in c# the function returns wrong integer value.

 in vc++

typedef struct 

{

    BOOL bALerm1;

    BOOL bALerm2; 

    BYTE bLevel;

}myStruct,

__declspec(dllexport)  static int   getStatus();//declaration

ClassA theApp;//object creation

int  ClassA::getStatus()
 {        
        myStruct tmpASS;
        int status=-1;
            tmpASS=myObj->GetZoneStatus();  //assgn value
             if (tmpASS.bALerm1==TRUE)
             {
              status=1;

             }
            else
             {
              status=0;
             }   
        }  
        return status;
 }

extern "C"    __declspec(dllexport) int  getStatus()
{
    return theApp.getStatus();
}

in c# side

       [DllImport("myDll.dll", SetLastError = true,
        CallingConvention = CallingConvention.Cdecl)]
        public static extern int getStatus();

 int status=getStatus();

always returns 0,can any one help plz!thanks