Vista 中引入了一个鲜为人知的功能,称为重新启动管理器,它可以帮助您通过用户模式代码释放文件锁定。由于您将其标记为 C++,因此基于本文,这里有一个小代码示例来执行此操作:
#include <RestartManager.h>
#pragma comment(lib ,"Rstrtmgr.lib")
BOOL ReleaseFileLock(LPCTSTR pFilePath)
{
BOOL bResult = FALSE;
DWORD dwSession;
WCHAR szSessionKey[CCH_RM_SESSION_KEY+1] = { 0 };
DWORD dwError = RmStartSession(&dwSession, 0, szSessionKey);
if (dwError == ERROR_SUCCESS)
{
dwError = RmRegisterResources(dwSession, 1, &pFilePath,
0, NULL, 0, NULL);
if (dwError == ERROR_SUCCESS)
{
UINT nProcInfoNeeded = 0;
UINT nProcInfo = 0;
RM_PROCESS_INFO rgpi[1];
DWORD dwReason;
dwError = RmGetList(dwSession, &nProcInfoNeeded,
&nProcInfo, rgpi, &dwReason);
if (dwError == ERROR_SUCCESS ||
dwError == ERROR_MORE_DATA)
{
if(nProcInfoNeeded > 0)
{
//If current process does not have enough privileges to close one of
//the "offending" processes, you'll get ERROR_FAIL_NOACTION_REBOOT
dwError = RmShutdown(dwSession, RmForceShutdown, NULL);
if (dwError == ERROR_SUCCESS)
{
bResult = TRUE;
}
}
else
bResult = TRUE;
}
}
}
RmEndSession(dwSession);
SetLastError(dwError);
return bResult;
}