Dave's Brain

Browse - programming tips - win32 programmatically reboot windows

Date: 2008jan18
Platform: win32

Q.  How do I programmatically reboot Windows?

A.  Here's how:

#ifndef WIN32S
#define WIN32S  0x80000000l
#endif

BOOL PressTheResetButton()
{
	HANDLE hToken;
	TOKEN_PRIVILEGES tkp;

	// Get a token for this process.
	if (!(GetVersion() & WIN32S))
	{
		//Debug("Setting token\n");
		// Running on NT or later so need to change privileges
		if (!OpenProcessToken(GetCurrentProcess(),
			TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken))
		{
			Debug("OpenProcessToken error %d\n", GetLastError());
		}

		// Get the LUID for shutdown privilege
		LookupPrivilegeValue(NULL, TEXT("SeShutdownPrivilege"),
			&tkp.Privileges[0].Luid);
		tkp.PrivilegeCount = 1;  // one privilege to set
		tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

		// Get shutdown privilege for this process.
		if (!AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,
(PTOKEN_PRIVILEGES)NULL, 0))
		{
			Debug("AdjustTokenPrivileges error %d\n", GetLastError
());
		}
	}

	// Shut down the system, and force all applications closed.
	if (!ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
	{
		Debug("ExitWindowsEx force error %d\n",
GetLastError());
	}

	// If we're here it didn't work
	return FALSE;
}

Add a comment

Sign in to add a comment