Hello,

In several Vista OS, I use CreateWindowEx to create a window in Live Messenger's process, it crashed. I have checked, all parameters are right. And if I moved CreateWindowEx out of Live Messenger's process, no problems. And also, in most Vista computers and all other win98/2000/xp computers, no problems, only on several Vista computer, it crash. Who had encountered this problems?

Could you post the code snippet where you call the function?

The code is like this:

class CAtMSNWnd ublic CWindowImpl<CAtMSNWnd>
{
public :
    CAtMSNWnd(){};
    virtual ~CAtMSNWnd(){};   
public :
    BEGIN_MSG_MAP(CAtMSNWnd)
    MESSAGE_HANDLER(WM_COMMAND, OnCommand)
    END_MSG_MAP()
    LRESULT OnCommand(UINT nMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled);
};

SetWindowsHookEx(WH_GETMESSAGE, (HOOKPROC)MSNMsgFilter, _Module.GetModuleInstance(), GetWindowThreadProcessId(hWnd,&pid) ); //hWnd is MSN main window
CAtMSNWnd* g_pMSNWnd = NULL;
LRESULT CALLBACK __stdcall MSNMsgFilter(int nCode ,WPARAM wParam,LPARAM lParam)
{
...//following code will only be enterred once
    g_pMSNWnd = new CAtMSNWnd();
    if(!g_pMSNWnd)
        return FALSE;
    g_pMSNWnd->Create(GetDesktopWindow(), rc, "my test window", WS_POPUP, 0, 0); //Crashed at this place
...
}


Is there any wrong?

No one meet this problems?

quote:

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Originally posted by carlz
No one meet this problems?

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Is that code MFC? If so, I'm afraid I can't help.

if its MFC for a start i dont think you can use MFC DLL for SetWindowsHook i read it somewhere