error C2556: 'void __thiscall ::sendCommand1(unsigned int,const char *,int)' : overloaded function differs
errorC2556:'void__thiscall::sendCommand1(unsignedint,constchar*,int)':overloadedfunctiondiffersonlybyreturntypefrom'int__thiscall errorC2371:'sendFtCommand1':redefinition;differentbasictypes 这个错误是这样