How to automatically handle DialogBoxShowing event in Python(Revit Dynamo)? - revit-api

Question

How do I subscribe to Revit events in Python (Dynamo)?
Specifically DialogBoxShowing so I can see if it is "Export with Temporary Hide/Isolate" warning and select "Leave the Temporary Isolate Mode on and Export"?
It is done in C# here:
http://thebuildingcoder.typepad.com/blog/2013/03/export-wall-parts-individually-to-dxf.html
See sub-heading: Handling and Dismissing a Warning Message
Thanks!

Answer 1

To make it more simple than in the tutorial :
Inside Revit, with RevitPythonShell, the event subscribing part can be very easy.
An event handler is just a callable with two arguments : senderand event. Then the event, or the sender gives parameters to play with, DialogId and OverrideResultin our case.
To keep the Building Coder example, let's go with :
def on_dialog_open(sender, event):
try:
if event.DialogId == 'TaskDialog_Really_Print_Or_Export_Temp_View_Modes':
event.OverrideResult(1002)
# 1001 call TaskDialogResult.CommandLink1
# 1002 call TaskDialogResult.CommandLink2
# int(TaskDialogResult.CommandLink2) to check the result
except Exception as e:
pass #print(e) # uncomment this to debug
You only need to plug this function to an event with the following syntax :
__uiControlledApplication__.DialogBoxShowing += on_dialog_open
This can be done in the startup file of RevitPythonShell :
C:\Users\USERNAME\AppData\Roaming\RevitPythonShell2017\startup.py
(Or in the startup part of your addin)
The better way is to unregister the handler if you don't need it anymore, i.e. when Revit is closing (check the tutorial for more details) :
__uiControlledApplication__.DialogBoxShowing -= on_dialog_open
If you want to try this within the console, you can use :
def on_dialog_open(sender, event):
# [...]
__revit__.DialogBoxShowing += on_dialog_open
And after you try an export:
__revit__.DialogBoxShowing -= on_dialog_open
EDIT : shortcuts for result commands (thanks Callum !)
('Cancel', 2)
('Close', 8)
('CommandLink1', 1001)
('CommandLink2', 1002)
('CommandLink3', 1003)
('CommandLink4', 1004)
('No', 7)
('None', 0)
('Ok', 1)
('Retry', 4)
('Yes', 6)

Answer 2

To answer your first question. Try to read this tutorial from Pierre Moureu : https://github.com/PMoureu/samples-Python-RPS/tree/master/Tutorial-IUpdater.
He his subscribing to a IUpdater.

Answer 3

(sorry not enough reputation to add this as comment to the response by PRMoureu...)
To expand on handling Dialogs a little...
Subscribing to DialogBoxShowing is hugely powerful, we have just rolled out a Dialog Suppressor to silence the ever-frustrating 'Would you like to join walls to the floor you just made' and 'Would you like to attach these walls to the roof'. It can also be used to see what errors users are commonly getting etc.
To investigate a Dialogs message text: event.Message
To reply 'Cancel' to the Dialog: event.OverrideResult(0)
To reply 'Yes' to the Dialog: event.OverrideResult(1)
To reply 'OK' to the Dialog: event.OverrideResult(6)