能介绍一下EnumThreadWindows的用法吗?最好有例子!!!

[ygwaatas]

能介绍一下EnumThreadWindows的用法吗?最好有例子!!!

[huzhangyou]

BOOL EnumThreadWindows(
DWORD dwThreadId, // thread identifier
WNDENUMPROC lpfn, // pointer to callback function
LPARAM lParam // application-defined value
);

Parameters
dwThreadId
Identifies the thread whose windows are to be enumerated.
lpfn
Pointer to an application-defined callback function. For more information, see EnumThreadWndProc.
lParam
Specifies an application-defined value to be passed to the callback function.
Return Values
If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, callGetLastError.


这是msdn的

[huzhangyou]

BOOL CALLBACK EnumProc(
HWND hwnd,
LPARAM lParam)
{
// Send a WM_CLOSE to destroy the window, because DestroyWindow
// does not work across threads.

SendMessage(hwnd, WM_CLOSE, 0, 0);
return TRUE;
}

BOOL ConsoleCtrlHandler(
DWORD dwCtrlType)
{
if (dwCtrlType == CTRL_LOGOFF_EVENT && dwGuiThreadId != 0)
{
SetThreadDesktop(GetThreadDesktop(dwGuiThreadId));
EnumThreadWindows(dwGuiThreadId, EnumProc, 0);
}
return FALSE;
}



这个就可以

[huzhangyou]

static const TCHAR szAfxOldWndProc[] = _T("AfxOldWndProc");

BOOL CALLBACK EnumProc( HWND hWnd, LPARAM lParam)
{
WNDPROC oldWndProc = (WNDPROC)::GetProp(hWnd, szAfxOldWndProc);
if (oldWndProc!=NULL)
{
SetWindowLong(hWnd, GWL_WNDPROC, (DWORD)oldWndProc);
RemoveProp(hWnd, szAfxOldWndProc);
}

return TRUE;
}

void CMainFrame::OnEndSession(BOOL bEnding)
{DWORD dwProcessId;

DWORD dwThreadId= GetWindowThreadProcessId(m_hWnd,&dwProcessId);
EnumThreadWindows(dwThreadId, EnumProc,(LPARAM) dwThreadId);
}