Creating a window from PyHandle? Possible?

**Roger Upole** · Jul 18 '05, 04:21 PM

Re: Creating a window from PyHandle? Possible?

The basic problem is that the handle returned from GetPage is not an MFC
object, and win32ui is expecting an MFC property sheet page, not a raw
handle.
I played around with this a while back, and managed to display the property
page
by sending the window message PSM_ADDPAGE to a PyCPropertyShee t.
However, you can't use SendMessage until you've called CreateWindow for the
property sheet, and you can't call CreateWindow until you've added a
property
page. (catch-22!) I got around this by adding a dummy page to the property
sheet,
calling CreateWindow & SendMessage to add the task page, and then removing
the stand-in. But since the task page isn't MFC, after I did that any
attempt to call methods on the property sheet caused an access violation.

Roger

import win32api,win32c on, win32ui, pythoncom
import traceback, os
from win32com.tasksc heduler import taskscheduler
PSM_ADDPAGE = win32con.WM_USE R + 103
PSM_REMOVEPAGE = win32con.WM_USE R + 102
task_name='test _addtask_4.job'

ts=pythoncom.Co CreateInstance( taskscheduler.C LSID_CTaskSched uler,None,

pythoncom.CLSCT X_INPROC_SERVER ,taskscheduler. IID_ITaskSchedu ler)

t=ts.Activate(t ask_name)
iptp=t.QueryInt erface(tasksche duler.IID_IProv ideTaskPage)
tp=iptp.GetPage (taskscheduler. TASKPAGE_TASK,F alse)

fname=os.path.j oin(os.environ['SYSTEMROOT'],'system32','ms task.dll')
dll=win32ui.Loa dLibrary(fname)
try:
dll.AttachToMFC ()
except:
traceback.print _exc()

ps=win32ui.Crea tePropertySheet ('eh ?????')

## property sheet won't let you CreateWindow unless there's already a
property page attached,
## and you can't do a SendMessage until you've created a window !!!!
pptask=win32ui. CreatePropertyP age(401) ## 401 is the task page template from
mstask.dll, identified using EnumResources
ps.AddPage(ppta sk)
ps.CreateWindow ()
ps.SendMessage( PSM_ADDPAGE,0,t p)
## get rid of the dummy
ps.RemovePage(0 )

"Fadly Tabrani" <no@spam.net> wrote in message
news:ckaq81$50h $1@mawar.singne t.com.sg...[color=blue]
> Hi guys,
>
> This is the first time I'm posting to the newsgroup, hope you can help[/color]
out.[color=blue]
>
> I'm writing a module to interface with the task scheduler in windows
> using PyWin32. Everything has been great so far but I'm stuck on
> displaying the propertys page of a task. Here's the code:
>
> import pythoncom
> import win32api
> from win32com.tasksc heduler import taskscheduler
> import win32ui
>
> task_scheduler = pythoncom.CoCre ateInstance\
> (taskscheduler. CLSID_CTaskSche duler,
> None, pythoncom.CLSCT X_INPROC_SERVER ,
> taskscheduler.I ID_ITaskSchedul er)
>
> def show_schedule_p age(task_name):
>
> TASKPAGE_TASK = 0,
> TASKPAGE_SCHEDU LE = 1,
> TASKPAGE_SETTIN GS = 2
>
> try:
> task = task_scheduler. Activate(task_n ame)
> except pythoncom.com_e rror, e:
> print 'Task name not found...'
> return
>
> # ** This returns a PyHandle
> handle =[/color]
task.QueryInter face(taskschedu ler.IID_IProvid eTaskPage).\[color=blue]
> GetPage(1, True)
>
> # ** Can't create a window with it using win32ui, returns error
> try:
> win32ui.CreateW indowFromHandle (handle)
> except win32ui.error, e:
> print e
>
> # ** Can't add it to a property sheet, return an error
> property_sheet = win32ui.CreateP ropertySheet('T ask Schedule')
> try:
> property_sheet. AddPage(handle)
> except (win32ui.error, TypeError), e:
> print e
>
> show_schedule_p age('task1')
>
> Any ideas on how to do it? The task schduler api reference is at
>[/color]
http://msdn.microsoft.com/library/de...start_page.asp[color=blue]
>
> I'm pretty new at this, is there anything that I've missed out?
>
> Cheers,
> Fadly Tabrani
> python loves me loves python[/color]

Creating a window from PyHandle? Possible?

Creating a window from PyHandle? Possible?

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