windows hoooks ! WH_SHELL

have you tried:

Str:=TCBTCreateWnd(lParam)^.lpcs.lpszName; and TCBTCreateWnd(lParam)^.lpcs.hwndParent ?

What is lParam in Your code?

Look there
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwui/html/msdn_hooks32.asp

WH_SHELL
Windows calls this hook when actions occur to top-level (that is, unowned) windows. In the case of thread-specific hooks, Windows calls this hook only for windows that belong to the thread. This is a notification-only hook, so the filter function cannot modify or discard the event. The wParam parameter contains the handle to the window; the lParam parameter is not used.

Result := CallNextHookEx(SysHook, Code, wParam, lParam);

It don't answers my question.

If You call

SetWindowHookEx(WH_SHELL,YourHookProc,...);

then in

YourHookProc
lParam is not used. As stated in my previous post

I want to get activeted window's name .
i want to get the same value that i got in WH_CBT with TCBTCreateWnd(lParam)^.lpcs.lpszName and TCBTCreateWnd(lParam)^.lpcs.hwndParent . it is imposible ?

lParam is used in WH_SHELL system-wide hooks but it contains different structures depending on code and OS version. See:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/WinUI/WindowsUserInterface/Windowing/Hooks/HookReference/HookFunctions/ShellProc.asp

Regards, Geo

You have to check if the code is HSHELL_WINDOWACTIVATED first and then use wParam (which contains the handle to the window) to get its caption using GetWindowTextLength and GetWindowText APIs, for instance.

Regards, Geo

Try this (I haven't tested this in WH_SHELL callback function though):

function ReadWindowText(h:HWND) : string;
var
 buf : string;
 len : integer;
begin
 try
   len := SendMessage(h,wm_getTextLength,0,0);
   SetLength(buf,len);
   SendMessage(h,wm_getText,len+1,Integer(buf));
   result := buf;
 except
   result := '';
 end;
end;

// and use it this way in WH_SHELL function:
...
Str := ReadWindowText(wParam);

Regards, Geo

thx it works...
nut it isn't the same :
    Str := GetWindowText(wParam, windtext, 255);
???

GetWindowText returns an integer not a string.

GetWindowText(wParam, windtext, 255);
Str := windtext;

ok, but what is difference between Str := windtext; and Str := ReadWindowText(wParam);
 ???

The GetWindowText function copies the text of the specified window's title bar (if it has one) into a buffer. If the specified window is a control, the text of the control is copied. However, GetWindowText CANNOT retrieve the text of a control in another application.