在Windows系统上以C++打印出当前活动用户的环境变量,代码如下(QT环境):
- void getEnvironmentVariables()
- {
- DWORD sessionId = WTSGetActiveConsoleSessionId();
- qInfo() << "Session ID = " << sessionId;
- HANDLE token;
- if (!WTSQueryUserToken(sessionId, &token))
- {
- qCritical() << "Failed to get the user token of session " << sessionId;
- }
- wchar_t* pEnv = NULL;
- if (CreateEnvironmentBlock((void**)&pEnv, token, TRUE))
- {
- while (*pEnv) {
- // printf("%ls ", pEnv);
- qInfo() << QString::fromWCharArray(pEnv);
- pEnv += wcslen(pEnv) + 1;
- }
- }
- }
以上是打印当前活动用户(active user)的。
如果仅仅是是打印当前进程所处环境的环境变量,见Visual Studio的代码如下:
- #include <Windows.h>
- #include <UserEnv.h>
- #include <assert.h>
- #include <stdio.h>
- #pragma comment(lib, "userenv.lib")
- int main()
- {
- HANDLE hToken = NULL;
- BOOL ok = OpenProcessToken(GetCurrentProcess(), TOKEN_READ, &hToken);
- assert(ok);
- wchar_t* penv = L"";
- ok = CreateEnvironmentBlock((void**)&penv, hToken, TRUE);
- assert(ok);
- while (*penv) {
- printf("%ls ", penv);
- penv += wcslen(penv) + 1;
- }
- return 0;
- }
http://blog.csdn.net/nirendao/article/details/52040232