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uses Tlhelp32;
function KillTask(ExeFileName: string): integer;
const
  PROCESS_TERMINATE = $0001;
var
  ContinueLoop: BOOLean;
  FSnapshotHandle: THandle;
  FProcessEntry32: TProcessEntry32;
begin
  Result := 0;
  FSnapshotHandle := CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
  FProcessEntry32.dwSize := SizeOf(FProcessEntry32);
  ContinueLoop := Process32First(FSnapshotHandle, FProcessEntry32);
  while integer(ContinueLoop) <> 0 do
  begin
    if ((UpperCase(ExtractFileName(FProcessEntry32.szExeFile)) = UpperCase
          (ExeFileName)) or (UpperCase(FProcessEntry32.szExeFile) = UpperCase
          (ExeFileName))) then
      Result := integer(TerminateProcess(OpenProcess(PROCESS_TERMINATE, BOOL(0)
              , FProcessEntry32.th32ProcessID), 0));
    ContinueLoop := Process32Next(FSnapshotHandle, FProcessEntry32);
  end;
  CloseHandle(FSnapshotHandle);
end;
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if KillTask('qq.exe') <> 0 then
    showmessage('½áÊøQQ³É¹¦')
else
    showmessage('ÎÞ·¨½áÊøQQ');
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procedure TForm1.Timer1Timer(Sender: TObject);
begin
    KillTask('qq.exe');
end;