Hi,
I have a win32com application need to get IE HTML DOM events.
I searched web for a few days, and I have found 4 methods to approach that.
Sorry about this long text, because I want to give more hint.
1. method 1
#----------------------------------------------------------------------
# method 1
# Make an instant of DocEvents(subclass of HTMLDocumentEvents2)
# It will take a long time(about tens of seconds) to generate / compile
# 3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py in directory gen_py
# when execute code 'EnsureModule(...)' if this file did not exist.
#----------------------------------------------------------------------
from win32com.client import gencache, Dispatch
import time
docmod = gencache.EnsureModule('{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}', 0, 4,
0)
class DocEvents(docmod.HTMLDocumentEvents2):
def __init__(self, doc):
docmod.HTMLDocumentEvents2.__init__(self, doc)
def Ononclick(self, event):
print 'onclick'
ev = gencache.EnsureDispatch(event)
elem = ev.srcElement
print 'tagName' , elem.tagName
print 'id' , elem.id
print 'innerText' , elem.innerText
print 'clientX' , ev.clientX
print 'clientY' , ev.clientY
print 'body text' , doc.body.createTextRange().text
ie = Dispatch("InternetExplorer.Application")
ie.Navigate('http://www.google.com')
ie.Visible = 1
while ie.Busy:
time.sleep(0.1)
doc = ie.Document
d = DocEvents(doc)
#----------------------------------------------------------------------
# end of method 1
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# output of method 1
#----------------------------------------------------------------------
"""
onclick
tagName B
id
innerText Web
clientX 172
clientY 182
body textpythoncom error: Python error invoking COM method.
Traceback (most recent call last):
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 285, in
_Invoke_
return self._invoke_(dispid, lcid, wFlags, args)
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 290, in
_invoke_
return S_OK, -1, self._invokeex_(dispid, lcid, wFlags, args, None, None)
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 588, in
_invokeex_
return func(*args)
File "D:\project\python\Test\ie-event-method-1.py", line 29, in Ononclick
print 'body text' , doc.body.createTextRange().text
File "C:\Python24\Lib\site-packages\win32com\client\__init__.py", line 454,
in __getattr__
raise AttributeError, "'%s' object has no attribute '%s'" % (repr(self),
attr)
exceptions.AttributeError: '<win32com.gen_py.Microsoft HTML Object
Library.IHTMLElement instance at 0x37223760>' object has no attribute
'createTextRange'
"""
#----------------------------------------------------------------------
# end of output 1
#----------------------------------------------------------------------
2. method 2
#----------------------------------------------------------------------
# method 2
# Dispatch ie.Document with DocEvents(subclass of HTMLDocumentEvents2)
# It will take a long time(about tens of seconds) to generate / compile
# 3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py in directory gen_py
# when execute code 'EnsureModule(...)' if this file did not exist.
#----------------------------------------------------------------------
from win32com.client import gencache, Dispatch, DispatchWithEvents
import time
docmod = gencache.EnsureModule('{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}' ,0 ,4,
0)
class DocEvents(docmod.HTMLDocumentEvents2):
def Ononclick(self):
print 'onclick'
ev = doc.parentWindow.event
elem = ev.srcElement
print 'tagName' , elem.tagName
print 'id' , elem.id
print 'innerText' , elem.innerText
print 'clientX' , ev.clientX
print 'clientY' , ev.clientY
print 'body text' , doc.body.createTextRange().text
ie = Dispatch('InternetExplorer.Application')
ie.Visible = 1
ie.Navigate('http://www.google.com')
while ie.Busy:
time.sleep(0.1)
doc = ie.Document
d = DispatchWithEvents(doc, DocEvents)
#----------------------------------------------------------------------
# end of code 2
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# output of method 2
#----------------------------------------------------------------------
"""
onclick
tagName B
id
innerText Web
clientX 171
clientY 176
body textpythoncom error: Python error invoking COM method.
Traceback (most recent call last):
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 285, in
_Invoke_
return self._invoke_(dispid, lcid, wFlags, args)
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 290, in
_invoke_
return S_OK, -1, self._invokeex_(dispid, lcid, wFlags, args, None, None)
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 588, in
_invokeex_
return func(*args)
File "D:\project\python\Test\ie-event-method-2.py", line 27, in Ononclick
print 'body text' , doc.body.createTextRange().text
File "C:\Python24\Lib\site-packages\win32com\client\__init__.py", line 454,
in __getattr__
raise AttributeError, "'%s' object has no attribute '%s'" % (repr(self),
attr)
exceptions.AttributeError: '<win32com.gen_py.Microsoft HTML Object
Library.IHTMLElement instance at 0x37223880>' object has no attribute
'createTextRange'
"""
#----------------------------------------------------------------------
# end of output 2
#----------------------------------------------------------------------
3. method 3
#----------------------------------------------------------------------
# method 3
# Use WithEvents(not a subclass of HTMLDocumentEvents2)
# This method will also take a long time to generate / compile
# 3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py in directory gen_py
# when execute code 'WithEvents(...)' if this file did not exist.
#----------------------------------------------------------------------
from win32com.client import Dispatch, WithEvents
import time
class DocEvents:
def Ononclick(self):
print 'onclick'
ev = doc.parentWindow.event
elem = ev.srcElement
print 'tagName' , elem.tagName
print 'id' , elem.id
print 'innerText' , elem.innerText
print 'clientX' , ev.clientX
print 'clientY' , ev.clientY
print 'body text' , doc.body.createTextRange().text
ie = Dispatch("InternetExplorer.Application")
ie.Visible = 1
ie.Navigate('http://www.google.com')
while ie.Busy:
time.sleep(0.1)
doc = ie.Document
d = WithEvents(doc, DocEvents)
#----------------------------------------------------------------------
# end of code 3
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# output of method 3 (when this code run first time,
# ie, 3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py *NOT* exist)
#----------------------------------------------------------------------
"""
onclick
tagName B
id
innerText Web
clientX 168
clientY 182
body text Personalized Home | Sign in
Web Images VideoNew! News Maps more ?Books
Froogle
Groups
even more ?
Advanced Search
Preferences
Language Tools
Advertising Programs - Business Solutions - About Google
Make Google Your Homepage!
?2006 Google
"""
#----------------------------------------------------------------------
# end of output 3
# (3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py *NOT* exist)
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# output of method 3 (when this code run another time,
# ie, 3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py *DO* exist)
#----------------------------------------------------------------------
"""
onclick
tagName B
id
innerText Web
clientX 172
clientY 182
body textpythoncom error: Python error invoking COM method.
Traceback (most recent call last):
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 285, in
_Invoke_
return self._invoke_(dispid, lcid, wFlags, args)
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 290, in
_invoke_
return S_OK, -1, self._invokeex_(dispid, lcid, wFlags, args, None, None)
File "C:\Python24\Lib\site-packages\win32com\server\policy.py", line 588, in
_invokeex_
return func(*args)
File "D:\project\python\Test\ie-event-method-3.py", line 24, in Ononclick
print 'body text' , doc.body.createTextRange().text
File "C:\Python24\Lib\site-packages\win32com\client\__init__.py", line 454,
in __getattr__
raise AttributeError, "'%s' object has no attribute '%s'" % (repr(self),
attr)
exceptions.AttributeError: '<win32com.gen_py.Microsoft HTML Object
Library.IHTMLElement instance at 0x43431616>' object has no attribute
'createTextRange'
"""
#----------------------------------------------------------------------
# end of output 3
# (3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py *DO* exist)
#----------------------------------------------------------------------
4. method 4
#----------------------------------------------------------------------
# method 4
# Try to use attachEvent, but never worked
#----------------------------------------------------------------------
from win32com.client import Dispatch
import time
class DocEvents:
def Ononclick(self):
print 'onclick'
ev = doc.parentWindow.event
elem = ev.srcElement
print 'tagName' , elem.tagName
print 'id' , elem.id
print 'innerText' , elem.innerText
print 'clientX' , ev.clientX
print 'clientY' , ev.clientY
print 'body text' , doc.body.createTextRange().text
ie = Dispatch("InternetExplorer.Application")
ie.Visible = 1
ie.Navigate('http://www.google.com')
while ie.Busy:
time.sleep(0.1)
doc = ie.Document
#doc.attachEvent('onclick',DocEvents.Ononclick)
doc.attachEvent('onclick',DocEvents)
#----------------------------------------------------------------------
# end of code 4
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# output of method 4
#----------------------------------------------------------------------
"""
Traceback (most recent call last):
File
"C:\Python24\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py", line
310, in RunScript
exec codeObject in __main__.__dict__
File "D:\project\python\Test\ie-event-method-4.py", line 31, in ?
doc.attachEvent('onclick',DocEvents)
File
"C:\Python24\lib\site-packages\win32com\gen_py\3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py",
line 9518, in attachEvent
, pdisp)
ValueError: argument is not a COM object
"""
#----------------------------------------------------------------------
# end of output 4
#----------------------------------------------------------------------
5. method 5
#----------------------------------------------------------------------
# method 5
# Don't handle DOM events, always works right
# when 3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py not exist
#----------------------------------------------------------------------
from win32com.client import Dispatch
import time
ie = Dispatch("InternetExplorer.Application")
ie.Visible = 1
ie.Navigate('http://www.google.com')
while ie.Busy:
time.sleep(0.1)
doc = ie.Document
print doc.body.createTextRange().text
#----------------------------------------------------------------------
# end of code 5
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# output of method 5
# (3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py not exist)
#----------------------------------------------------------------------
"""
Personalized Home | Sign in
Web Images VideoNew! News Maps more ?Books
Froogle
Groups
even more ?
Advanced Search
Preferences
Language Tools
Advertising Programs - Business Solutions - About Google
Make Google Your Homepage!
?2006 Google
"""
#----------------------------------------------------------------------
# end of output 5
# (3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py not exist)
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# output of method 5
# (3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py DO exist)
#----------------------------------------------------------------------
"""
Traceback (most recent call last):
File
"C:\Python24\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py", line
310, in RunScript
exec codeObject in __main__.__dict__
File "D:\project\python\Test\ie-event-method-5.py", line 19, in ?
print doc.body.createTextRange().text
File "C:\Python24\Lib\site-packages\win32com\client\__init__.py", line 454,
in __getattr__
raise AttributeError, "'%s' object has no attribute '%s'" % (repr(self),
attr)
AttributeError: '<win32com.gen_py.Microsoft HTML Object Library.IHTMLElement
instance at 0x37747768>' object has no attribute 'createTextRange'
"""
#----------------------------------------------------------------------
# end of output 5
# (3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py DO exist)
#----------------------------------------------------------------------
method 1,2,3,5 can work, not method 4.
My result is:
method 1,2 works right when try 'elem.tagName', 'elem.id', 'elem.innerText',
'ev.clientX',
but never works when try 'doc.body.createTextRange()' whether file
'3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py' exist.
*** method 3 works right when '3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py'
do NOT exist ***,
but works like method 1,2 when file
'3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py' exist.
method 4 never get works, just I think may be works.
method 5 can always works when file
'3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py' NOT exist,
but never works when file '3050F1C5-98B5-11CF-BB82-00AA00BDCE0Bx0x4x0.py' DO
exist.
These code run under:
Windows XP SP2
Internet Explorer 6.0.2900.2180.xpsp_sp2_rtm.040803-2158
PythonWin 2.4.3 (#69, Apr 11 2006, 15:32:42) [MSC v.1310 32 bit (Intel)] on
win32.
pywin32 build 209
My question:
It looks like that:
'doc.body.createTextRange()' never works right, whenever makepy.py generate
{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B} python wrapper before run these code,
Noticed that in method 3, 'd = WithEvents(doc, DocEvents)' will generate this
wrapper, but works right
at first time when this wrapper not generate before.
But works wrong when this wrapper already exist.
I don't know why this wrapper effect method 5, since method 5 never handle
{3050F1C5-98B5-11CF-BB82-00AA00BDCE0B}.
Method 1,2 always generate this wrapper file, and never works right whether
this wrapper exist.
And I notice that, when generate this wrapper file, my application memory
consumption will grow up to 180MB, and
60MB when do not generate it.
Any advice will be appreciated.
Thanks,
Richard
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