如題 !!我在我的程式中呼叫一個螢幕小鍵盤的程式 . 用完後 , 我希望能按一個我程式中的按鍵去關掉這個螢幕小鍵盤!!請大大指教!!

function KillTask(ExeFileName: string): integer;
const
PROCESS_TERMINATE = $0001;
var
ContinueLoop: BOOL;
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;