Получить дескриптор окна другого приложения и сделать его активным

type
PFindWindowStruct = ^TFindWindowStruct;
TFindWindowStruct = record
Caption : string;
ClassName : string;
WindowHandle : THandle;
end;
function EnumWindowsProc(hWindow : hWnd; lParam : LongInt) : Bool {$IFDEF Win32} stdcall; {$ELSE} ; export; {$ENDIF}
var
lpBuffer: PChar;
WindowCaptionFound: bool;
ClassNameFound: bool;
begin
GetMem(lpBuffer, 255);
Result := True;
WindowCaptionFound := False;
ClassNameFound := False;
try
if GetWindowText(hWindow, lpBuffer, 255) > 0 then
if Pos(PFindWindowStruct(lParam).Caption, StrPas(lpBuffer)) > 0 then
WindowCaptionFound := true;
if PFindWindowStruct(lParam).ClassName = '' then
ClassNameFound := True
else
if GetClassName(hWindow, lpBuffer, 255) > 0 then
if Pos(PFindWindowStruct(lParam).ClassName, StrPas(lpBuffer)) > 0 then
ClassNameFound := True;
if (WindowCaptionFound and ClassNameFound) then
begin
PFindWindowStruct(lParam).WindowHandle := hWindow;
Result := False;
end;
finally
FreeMem(lpBuffer, sizeof(lpBuffer^));
end;
end;
function FindAWindow(Caption : string; ClassName : string) : THandle;
var
WindowInfo : TFindWindowStruct;
begin
with WindowInfo do begin
Caption := Caption;
ClassName := ClassName;
WindowHandle := 0;
EnumWindows(@EnumWindowsProc, LongInt(@WindowInfo));
FindAWindow := WindowHandle;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
TheWindowHandle : THandle;
begin
TheWindowHandle := FindAWindow('Netscape - ', '');
if TheWindowHandle = 0 then
ShowMessage('Window Not Found!')
else
BringWindowToTop(TheWindowHandle);
end;