GlobalMemoryStatusEx()在VC6.0下的编译

int getTotalRAM(void) {
int ret = 0;
DWORD v = GetVersion();
DWORD major = (DWORD)(LOBYTE(LOWORD(v)));
DWORD minor = (DWORD)(HIBYTE(LOWORD(v)));
DWORD build = 0;
if (v < 0x80000000) build = (DWORD)(HIWORD(v));

// 定义函数指针
BOOL (__stdcall*GMSEx)(LPMEMORYSTATUSEX) = 0;

HINSTANCE hIL = LoadLibrary(L"kernel32.dll");
GMSEx = (BOOL(__stdcall*)(LPMEMORYSTATUSEX))GetProcAddress(hIL, "GlobalMemoryStatusEx");

if(GMSEx) {
MEMORYSTATUSEX m;
m.dwLength = sizeof(m);
if(GMSEx(&m)) {
ret = (int)(m.ullTotalPhys>>20);
}
} else {
MEMORYSTATUS m;
m.dwLength = sizeof(m);
GlobalMemoryStatus(&m);
ret = (int)(m.dwTotalPhys>>20);
}
return ret;
}