#include <Shlwapi.h>
#include <shlobj.h>
#pragma comment( lib, "shell32.lib")
#pragma comment( lib, "shlwapi.lib")
 
void GetPath(TCHAR szPath[MAX_PATH], LPCTSTR lpFilename)
{
    ::GetModuleFileName(NULL, szPath, MAX_PATH);
    ::PathRemoveFileSpec(szPath);
    ::PathAddBackslash(szPath);
    ::PathAppend(szPath, lpFilename);
}
         
TCHAR szPath[MAX_PATH] = { 0 };
GetPath(szPath, _T("vHttpNet.dll")); // vHttpNet.dll 是相对于当前可执行程序的路径
 HMODULE z_DLL  = LoadLibrary(szPath);