[python-win32] OutlookAddin.py msoControlButton Caption not working
Premanshu Basak
premanshu999 at yahoo.co.in
Sun Jun 20 04:43:54 EDT 2021
Hi team,
I tried running the python demo code "OutlookAddin.py" which comes with
win32com as a demo outlook com addin. I will still share the code below. My
question here is when I run, it does adds a addin button on my Outlook 2016.
However there is no Caption on it. I will have to figureout the button by
hovering mouse over the toolbar area to check the button and click.
Can anyone please explain why the caption is not appearing when the addin
loads.
How it looks when loaded in Outlook 2016: the button is there but have to
hover mouse to see it.
OutlookAddin.py:
# A demo plugin for Microsoft Outlook (NOT Outlook Express)
#
# This addin simply adds a new button to the main Outlook toolbar,
# and displays a message box when clicked. Thus, it demonstrates
# how to plug in to Outlook itself, and hook outlook events.
#
# Additionally, each time a new message arrives in the Inbox, a message
# is printed with the subject of the message.
#
# To register the addin, simply execute:
# outlookAddin.py
# This will install the COM server, and write the necessary
# AddIn key to Outlook
#
# To unregister completely:
# outlookAddin.py --unregister
#
# To debug, execute:
# outlookAddin.py --debug
#
# Then open Pythonwin, and select "Tools->Trace Collector Debugging Tool"
# Restart Outlook, and you should see some output generated.
#
# NOTE: If the AddIn fails with an error, Outlook will re-register
# the addin to not automatically load next time Outlook starts. To
# correct this, simply re-register the addin (see above)
from win32com import universal
from win32com.server.exception import COMException
from win32com.client import gencache, DispatchWithEvents
import winerror
import pythoncom
from win32com.client import constants
import sys
# Support for COM objects we use.
gencache.EnsureModule('{00062FFF-0000-0000-C000-000000000046}', 0, 9, 0,
bForDemand=True) # Outlook 9
gencache.EnsureModule('{2DF8D04C-5BFA-101B-BDE5-00AA0044DE52}', 0, 2, 1,
bForDemand=True) # Office 9
# The TLB defining the interfaces we implement
universal.RegisterInterfaces('{AC0714F2-3D04-11D1-AE7D-00A0C90F26F4}', 0, 1,
0, ["_IDTExtensibility2"])
class ButtonEvent:
def OnClick(self, button, cancel):
import win32ui # Possible, but not necessary, to use a Pythonwin GUI
win32ui.MessageBox("Hello from Python")
return cancel
class FolderEvent:
def OnItemAdd(self, item):
try:
print("An item was added to the inbox with subject:",
item.Subject)
except AttributeError:
print("An item was added to the inbox, but it has no subject! -
", repr(item))
class OutlookAddin:
_com_interfaces_ = ['_IDTExtensibility2']
_public_methods_ = []
_reg_clsctx_ = pythoncom.CLSCTX_INPROC_SERVER
_reg_clsid_ = "{0F47D9F3-598B-4d24-B7E3-92AC15ED27E2}"
_reg_progid_ = "Python.Test.OutlookAddin"
_reg_policy_spec_ = "win32com.server.policy.EventHandlerPolicy"
def OnConnection(self, application, connectMode, addin, custom):
print("OnConnection", application, connectMode, addin, custom)
# ActiveExplorer may be none when started without a UI (eg, WinCE
synchronisation)
activeExplorer = application.ActiveExplorer()
if activeExplorer is not None:
bars = activeExplorer.CommandBars
toolbar = bars.Item("Standard")
item = toolbar.Controls.Add(Type=constants.msoControlButton,
Temporary=True)
# Hook events for the item
item = self.toolbarButton = DispatchWithEvents(item,
ButtonEvent)
item.Caption = "Python"
item.TooltipText = "Click for Python"
item.Enabled = True
# And now, for the sake of demonstration, setup a hook for all new
messages
inbox =
application.Session.GetDefaultFolder(constants.olFolderInbox)
self.inboxItems = DispatchWithEvents(inbox.Items, FolderEvent)
def OnDisconnection(self, mode, custom):
print("OnDisconnection")
def OnAddInsUpdate(self, custom):
print("OnAddInsUpdate", custom)
def OnStartupComplete(self, custom):
print("OnStartupComplete", custom)
def OnBeginShutdown(self, custom):
print("OnBeginShutdown", custom)
def RegisterAddin(klass):
import winreg
key = winreg.CreateKey(winreg.HKEY_CURRENT_USER,
"Software\\Microsoft\\Office\\Outlook\\Addins")
subkey = winreg.CreateKey(key, klass._reg_progid_)
winreg.SetValueEx(subkey, "CommandLineSafe", 0, winreg.REG_DWORD, 0)
winreg.SetValueEx(subkey, "LoadBehavior", 0, winreg.REG_DWORD, 3)
winreg.SetValueEx(subkey, "Description", 0, winreg.REG_SZ,
klass._reg_progid_)
winreg.SetValueEx(subkey, "FriendlyName", 0, winreg.REG_SZ,
klass._reg_progid_)
def UnregisterAddin(klass):
import winreg
try:
winreg.DeleteKey(winreg.HKEY_CURRENT_USER,
"Software\\Microsoft\\Office\\Outlook\\Addins\\" + klass._reg_progid_)
except WindowsError:
pass
if __name__ == '__main__':
import win32com.server.register
win32com.server.register.UseCommandLine(OutlookAddin)
if "--unregister" in sys.argv:
UnregisterAddin(OutlookAddin)
else:
RegisterAddin(OutlookAddin)
Regards,
Premanshu
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