Foros Club Delphi - Auxilio para usar esta funcion sencilla

Amigos me encontré este código que sirve supuestamente para
colocar en foco y hasta adelante la aplicacion, como pueden ver
pide de parametro un Thandle...supongo que de la ventana..
pero como lo obtengo??? Alguien sabe como?
La cosa es usar la funcion a ver si sirve, pero no se bien como hacerlo. Alguna orientacion?:confused:

function ForceForegroundWindow(wnd: THandle): Boolean;
const
SPI_GETFOREGROUNDLOCKTIMEOUT = $2000;
SPI_SETFOREGROUNDLOCKTIMEOUT = $2001;
var
ForegroundThreadID: DWORD;
ThisThreadID: DWORD;
timeout: DWORD;
begin
if IsIconic(wnd) then ShowWindow(wnd, SW_RESTORE);

if GetForegroundWindow = wnd then Result := True
else
begin
// Windows 98/2000 doesn't want to foreground a window when some other
// window has keyboard focus

if ((Win32Platform = VER_PLATFORM_WIN32_NT) and (Win32MajorVersion > 4)) or
((Win32Platform = VER_PLATFORM_WIN32_WINDOWS) and
((Win32MajorVersion > 4) or ((Win32MajorVersion = 4) and
(Win32MinorVersion > 0)))) then
begin
// Code from Karl E. Peterson, www.mvps.org/vb/sample.htm
// Converted to Delphi by Ray Lischner
// Published in The Delphi Magazine 55, page 16

Result := False;
ForegroundThreadID := GetWindowThreadProcessID(GetForegroundWindow, nil);
ThisThreadID := GetWindowThreadPRocessId(wnd, nil);
if AttachThreadInput(ThisThreadID, ForegroundThreadID, True) then
begin
BringWindowToTop(wnd); // IE 5.5 related hack
SetForegroundWindow(wnd);
AttachThreadInput(ThisThreadID, ForegroundThreadID, False);
Result := (GetForegroundWindow = wnd);
end;
if not Result then
begin
// Code by Daniel P. Stasinski
SystemParametersInfo(SPI_GETFOREGROUNDLOCKTIMEOUT, 0, @timeout, 0);
SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0, TObject(0),
SPIF_SENDCHANGE);
BringWindowToTop(wnd); // IE 5.5 related hack
SetForegroundWindow(Wnd);
SystemParametersInfo(SPI_SETFOREGROUNDLOCKTIMEOUT, 0,
TObject(timeout), SPIF_SENDCHANGE);
end;
end
else
begin
BringWindowToTop(wnd); // IE 5.5 related hack
SetForegroundWindow(wnd);
end;

Result := (GetForegroundWindow = wnd);
end;
end; { ForceForegroundWindow }