def notify(self, title, message, app_name):
''' Displays a balloon in the systray. Can be called multiple times
with different parameter values.
'''
self.remove_notify()
# add icon and messages to window
hicon = self._hicon
flags = NIF_TIP | NIF_INFO
icon_flag = 0
if hicon is not None:
flags |= NIF_ICON
# if icon is default app's one, don't display it in message
if self._balloon_icon is not None:
icon_flag = NIIF_USER | NIIF_LARGE_ICON
notify_data = win_api_defs.get_NOTIFYICONDATAW(
0, self._hwnd,
id(self), flags, 0, hicon, app_name, 0, 0, message,
NOTIFYICON_VERSION_4, title, icon_flag, win_api_defs.GUID(),
self._balloon_icon
)
self._notify_data = notify_data
if not win_api_defs.Shell_NotifyIconW(NIM_ADD, notify_data):
raise Exception('Shell_NotifyIconW failed.')
if not win_api_defs.Shell_NotifyIconW(NIM_SETVERSION,
notify_data):
raise Exception('Shell_NotifyIconW failed.')
def remove_notify(self):
'''
Removes the notify balloon, if displayed.
'''
if self._notify_data is not None:
win_api_defs.Shell_NotifyIconW(NIM_DELETE, self._notify_data)
self._notify_data = None