IsProcessInIsolatedWindowsEnvironment 函式 (isolatedwindowsenvironmentutils.h)

發行項
03/05/2024

決定應用程式執行所在的執行環境 – 主機或隔離的環境。

語法

HRESULT IsProcessInIsolatedWindowsEnvironment(
  BOOL *isProcessInIsolatedWindowsEnvironment
);

參數

isProcessInIsolatedWindowsEnvironment

[out]

接收 API 結果之布爾值的指標。如果行程位於隔離的 Windows 環境中，這個參數將會 true 是， false 否則為。

傳回值

S_OK如果函式成功，則傳回。如果方法失敗，則會傳回 HRESULT 錯誤碼。

備註

任何使用 #D82A75EE833C241079F071CE88AFDFD88 (MDAG) 的應用程式，都需要能夠尋找執行所在的執行環境。這是必要的，應用程式可以適當地運作，以保護使用者/企業數據、使用者身分識別，以及應用程式的商業興趣。

範例

下列範例示範如何使用 IsProcessInIsolatedWindowsEnvironment API 來判斷應用程式的執行環境。

#define PrintInfo wprintf

typedef HRESULT (*pIsProcessInIsolatedWindowsEnvironment)
                  (_Out_ BOOL *isProcessInIsolatedWindowsEnvironment);

int PrintError(unsigned int line, HRESULT hr)
{
  wprintf_s(L"ERROR: Line:%d HRESULT: 0x%X\n", line, hr);
  return hr;
}

HRESULT TakeActionAsPerExecutionEnvironment()
{
  //For instance the action could be saving changes to user settings for the app.
  //Lets assume the app has made a design decision to save change to user settings if
  //the app is running on the host, and discard the changes to user settings if they were
  //changed in an Isolated Environment.

  HMODULE dllInstance (LoadLibrary(L"IsolatedWindowsEnvironmentUtils.dll"));

  if (nullptr == dllInstance)
  {
    PrintInfo(L" Cannot load the library IsolatedWindowsEnvironmentUtils.dll \n");
    return E_FAIL;
  }

  auto pfn = reinterpret_cast<pIsProcessInIsolatedWindowsEnvironment>

  (GetProcAddress(dllInstance, "IsProcessInIsolatedWindowsEnvironment"));

  if (nullptr == pfn)
  {
    PrintInfo(L"Function definition IsProcessInIsolatedWindowsEnvironment() is not found.\n");
    FreeLibrary(dllInstance);
    return E_FAIL;
  }

  BOOL isInIsolatedWindowsEnvironment = FALSE;

  HRESULT hr = pfn(&isInIsolatedWindowsEnvironment);

  if (FAILED(hr))
  {
    FreeLibrary(dllInstance);
    return PrintError(__LINE__, hr);
  }

  if (isInIsolatedWindowsEnvironment == TRUE) //app is running in Isolated Environment
  {
    //do not save changes to the app’s user settings in this case
    PrintInfo(L"Discarding changes to app’s user settings.\n");

    //<TO-DO-Start>
    //Add app specific custom logic here
    //<TO-DO-End>
  }
  else
  {
    //Save changes to the app’s user settings in this case
    PrintInfo(L"Saving changes to app’s user settings.\n");

    //<TO-DO-Start>
    //Add app specific custom logic here
    //<TO-DO-End>
  }

  FreeLibrary(dllInstance);
  return S_OK;
}