m_SerialNumber是NULL,求解

Question

typedef char* (WINAPI* FGetSerialNumber)(int);

void GetDiskSerial()
{
char* m_SerialNumber ;
//CString m_SerialNumber ="";
//CString m_DriveNumber;

//m_DriveNumber = "0";
int iDrive = atoi("0");

FGetSerialNumber GetSerialNumber;

HMODULE DllInst;

DllInst=NULL;

if (DllInst == NULL)
{   //DllInst = LoadLibrary(TEXT("GetDiskSerial.dll"));
    DllInst = LoadLibrary("GetDiskSerial.dll");
}

if (DllInst)
    {
            GetSerialNumber = (FGetSerialNumber)GetProcAddress(DllInst,"GetSerialNumber");

            m_SerialNumber = GetSerialNumber(iDrive);

            printf("\n\t\t磁盘物理序列号: %s ",*m_SerialNumber);



    }
else
    {
            printf("\n\t\t GetDiskSerial.dll 不存在!");
    }

}

Answer 1

GetSerialNumber 这个应该是 函数指针，如果调用的话，应该这样表示：(*GetSerialNumber)(iDrive);