Add-In Combobox crashes ArcMap, when feature layer is selected

FranziskaBeau — Sun, 12 Dec 2021 09:04:43 GMT

I worked out a Python Add-In Combox, that combines different Fields from different Feature Class in one Drop-Down-List. The user can select one ID/Code in the Drop-Donw list and the active view zooms to the selection. So far it's not very fast, but it works. My problem is, that Arc Map crashes, when I use the Combobox and a Feature Layer is selected. This I can't fix. Did anybody has an idea?

Here is my code:

import sys, os, arcpy, zipfile, traceback, pythonaddins
from arcpy import mapping, env

class SiteComboBoxClass43(object):
    """Implementation for Site_Python_Addins_addin.combobox (ComboBox)"""
    def __init__(self):
    self.items = []
    self.editable = True
    self.enabled = True
    self.dropdownWidth = 'WWWWWWWWW'
    self.width = 'WWWWWWWWW'
    def onFocus(self, focused):
         if focused:
                self.mxd = arcpy.mapping.MapDocument('current')
                global items, site, akode, fc_biotop_pol, fc_biotop_poi, fc_biotop_li, fc_pro1_pol, fc_pro1_poi, fc_pro1_li
                items = []
                fields_site = "SITE_ID"
                akode = "AKODE"
                fc_biotop_pol = "Biotop (Polygon)"
                fc_biotop_poi = "Biotop (Point)"
                fc_biotop_li = "Biotop (Line)"
                fc_pro1_pol = "Protection Area 1 (Polygon)"
                fc_pro1_poi = "Protection Area 1 (Point)"
                fc_pro1_li = "Protection Area 1 (Line)"
                # build lists and populate the Combobox with sorted values
                fcsites1 = [fc_biotop_pol, fc_biotop_poi, fc_biotop_li, fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
                fcakode1 = [fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
                for x in fcsites1:
                    for row in arcpy.da.SearchCursor(x,fields_site): items.append(row[0])
                for x in fcakode1:
                    for row in arcpy.da.SearchCursor(x,akode): items.append(row[0])
                self.items = sorted(items)                            
    pass
    def onSelChange(self, selection):
            combobox.enabled = True
            self.value = selection
            self.mxd = arcpy.mapping.MapDocument('current')
            self.df = arcpy.mapping.ListDataFrames(self.mxd)[0]
            # looking for the selected ID or code in the attributetable
            if len(selection) > 8:
                fcsites2 = [fc_biotop_pol, fc_biotop_poi, fc_biotop_li, fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
                for x in fcsites2:
                    arcpy.SelectLayerByAttribute_management(x, "NEW_SELECTION", fields_site + "='" + selection + "'")
            else:
                fcakode2 = [fc_pro1_pol, fc_pro1_poi, fc_pro1_li]
                for x in fcakode2:
                    arcpy.SelectLayerByAttribute_management(x, "NEW_SELECTION", akode + "='" + selection + "'")
            # zoom to Selection
            self.df.zoomToSelectedFeatures()
            self.df.scale = 15000
     pass‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍


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Re: Add-In Combobox with multiple values crashes ArcMap, when feature layer is selected

FranziskaBeau — Sun, 12 Dec 2021 09:04:46 GMT

Hello,

finally I found a solution. You have to install the comtypes modul to integrate ArcObjects methods and with this you can unselect the layer:

mU = GetModule(r"C:\Program Files (x86)\ArcGIS\Desktop10.2\com\esriArcMapUI.olb") 
mF = GetModule(r"C:\Program Files (x86)\ArcGIS\Desktop10.2\com\esriFramework.olb") 
app = CreateObject(mF.AppROT, interface=mF.IAppROT) 
pDoc = CType(app.Item(0).Document,mU.IMxDocument) 
ptoc = CType(pDoc.ContentsView(0),mU.IContentsView) 
ptoc.RemoveFromSelectedItems(pDoc.SelectedLayer) 
ptoc.RemoveFromSelectedItems(pDoc.FocusMap) #deselects the dataframe name as well, if it's necessary like in my case  
ptoc.Refresh ‍‍‍‍‍‍‍‍‍

topic Add-In Combobox crashes ArcMap, when feature layer is selected in Python AddIns Questions

Add-In Combobox crashes ArcMap, when feature layer is selected

Re: Add-In Combobox with multiple values crashes ArcMap, when feature layer is selected