topic Re: Re-Initializing wxPython GUI without crashing ArcMap - 10.1 Python AddIn in Python Questions

Re-Initializing wxPython GUI without crashing ArcMap - 10.1 Python AddIn

MichaelMarkieta — Thu, 02 Aug 2012 14:18:28 GMT

I am building upon this example of wxPython in ArcGIS 10.1.
http://betablogs.esri.com/beta/arcgis/2012/05/03/custom-wxpython-guis-an-approach-for-arcgis-10-1/

Outside of ArcMap, I can Close() the GUI and re-initialize it in its original state using the following method:

def OnReset(self, event):     self.parent.Close()      frame = myFrame()

Doing this is ArcMap causes it to crash... I think it has to do with the 'extensions' portion of the AddIn.

class WXExtension(object):     """Create a wxPython Extension inside ArcMap"""      def __init__(self):         self._wxApp = None         self._enabled = None      def startup(self):         try:             self._wxApp = wx.App()             self._wxApp.MainLoop()         except Exception:             pythonaddins.MessageBox("Unable to start the Extension.", "Extension Error")      @property     def enabled(self):         if self._enabled == False:             button.enabled = False         else:             button.enabled = True         return self._enabled      @enabled.setter     def enabled(self, value):         self._enabled = value  class Button(object):     """ Create a custom button inside ArcMap"""      _dlg = None      @property     def dlg(self):         if self._dlg is None:             self._dlg = myFrame()         return self._dlg      def __init__(self):         self.enabled = True         self.checked = False      def onClick(self):         try:             self.dlg.Show(True)         except Exception:             pythonaddins.MessageBox("Can't show myFrame.", "Error")             pass

Included the DMP file from the ArcMap crash...

Re: Re-Initializing wxPython GUI without crashing ArcMap - 10.1 Python AddIn

JasonScheirer — Thu, 02 Aug 2012 15:49:07 GMT

Need to use SimpleApp. Here's a blog post that references Mark Cederholm's findings as presented at the Developer Summit.

Re: Re-Initializing wxPython GUI without crashing ArcMap - 10.1 Python AddIn

MichaelMarkieta — Thu, 02 Aug 2012 16:41:14 GMT

Need to use SimpleApp. Here's a blog post that references Mark Cederholm's findings as presented at the Developer Summit.

This works.

Can you clarify why we must use the PySimpleApp class?

Re: Re-Initializing wxPython GUI without crashing ArcMap - 10.1 Python AddIn

JasonScheirer — Thu, 02 Aug 2012 16:44:34 GMT

Event loops. The SimpleApp one doesn't assume it's the only one processing events in the program, it plays well with other code that also handles mouse moves/button clicks/etc (like the rest of ArcMap.exe's controls).

Re: Re-Initializing wxPython GUI without crashing ArcMap - 10.1 Python AddIn

NadeemQazi — Thu, 04 Apr 2013 10:02:07 GMT

Hi there
I am also trying to use wxpython in arcgis10.1 however when i write import wx the arcgis10.1 python window it crashed. did u also
have same problem. i would appreciate your comments or suggestion to use wxpython in arcgis. the link you mentioned in your
message is not working.
regards
nadeem