64dfb023eb
true/false or TRUE/FALSE to prepare for the new boolean type and constants being added to Python. Added code to wx.py to test for the existence of the new constants and to create suitable values if not present. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@19335 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
139 lines
4.3 KiB
Python
139 lines
4.3 KiB
Python
|
|
from wxPython.wx import *
|
|
from wxPython.html import *
|
|
|
|
#----------------------------------------------------------------------
|
|
|
|
BTN1 = wxNewId()
|
|
BTN2 = wxNewId()
|
|
|
|
|
|
class TestPanel(wxPanel):
|
|
def __init__(self, parent, log):
|
|
wxPanel.__init__(self, parent, -1)
|
|
self.log = log
|
|
|
|
sizer = wxBoxSizer(wxVERTICAL)
|
|
html = wxHtmlWindow(self, -1)
|
|
html.SetPage(overview)
|
|
sizer.Add(html, 1, wxEXPAND|wxALL, 5)
|
|
|
|
btns = wxBoxSizer(wxHORIZONTAL)
|
|
btns.Add(50, -1, 1, wxEXPAND)
|
|
btn1 = wxButton(self, BTN1, "Find My Alter-ego") # don't save a ref to this one
|
|
btns.Add(btn1)
|
|
btns.Add(50, -1, 1, wxEXPAND)
|
|
self.btn2 = wxButton(self, BTN2, "Find Myself")
|
|
btns.Add(self.btn2)
|
|
btns.Add(50, -1, 1, wxEXPAND)
|
|
|
|
sizer.Add(btns, 0, wxEXPAND|wxALL, 15)
|
|
|
|
self.SetSizer(sizer)
|
|
self.SetAutoLayout(True)
|
|
|
|
self.sizer = sizer # save it for testing later
|
|
|
|
EVT_BUTTON(self, BTN1, self.OnFindButton1)
|
|
EVT_BUTTON(self, BTN2, self.OnFindButton2)
|
|
|
|
|
|
def OnFindButton1(self, evt):
|
|
win = self.FindWindowById(BTN1)
|
|
if win is None:
|
|
self.log.write("***** OOPS! None returned...\n")
|
|
return
|
|
className = win.__class__.__name__
|
|
if className in ["wxButton", "wxButtonPtr"]:
|
|
self.log.write("The types are the same! <grin>\n")
|
|
else:
|
|
self.log.write("Got %s, expected wxButton or wxButtonPtr\n" % className)
|
|
|
|
|
|
|
|
def OnFindButton2(self, evt):
|
|
win = self.FindWindowById(BTN2)
|
|
if win is None:
|
|
self.log.write("***** OOPS! None returned...\n")
|
|
return
|
|
if win is self.btn2:
|
|
self.log.write("The objects are the same! <grin>\n")
|
|
else:
|
|
self.log.write("The objects are NOT the same! <frown>\n")
|
|
|
|
win = evt.GetEventObject()
|
|
if win is None:
|
|
self.log.write("***** OOPS! None returned...\n")
|
|
return
|
|
if win is self.btn2:
|
|
self.log.write("The objects are the same! <grin>\n")
|
|
else:
|
|
self.log.write("The objects are NOT the same! <frown>\n")
|
|
|
|
sizer = self.GetSizer()
|
|
if sizer is None:
|
|
self.log.write("***** OOPS! None returned...\n")
|
|
return
|
|
if sizer is self.sizer:
|
|
self.log.write("The objects are the same! <grin>\n")
|
|
else:
|
|
self.log.write("The objects are NOT the same! <frown>\n")
|
|
|
|
|
|
#----------------------------------------------------------------------
|
|
|
|
def runTest(frame, nb, log):
|
|
win = TestPanel(nb, log)
|
|
return win
|
|
|
|
#----------------------------------------------------------------------
|
|
|
|
|
|
overview = """\
|
|
<html><body>
|
|
<h2>Original Object Return</h2>
|
|
|
|
<p>Several methods in wxWindows return pointers to base class objects,
|
|
when in fact the actual object pointed to is of a derived type. Since
|
|
SWIG isn't able to tell the actual type it just creates a new Python
|
|
shadow object of the base type to wrap around the base type pointer
|
|
and returns it.
|
|
|
|
<p>In wxPython prior to 2.3.0 this could cause annoying issues. For
|
|
example if you called:
|
|
|
|
<pre>
|
|
|
|
myText = someWindow.FindWindowById(txtID)
|
|
</pre>
|
|
|
|
expecting to get a wxTextCtrl you would actually get a wxWindow object
|
|
instead. If you then try to call SetValue on that object you'll get
|
|
an exception since there is no such method. This is the reason for
|
|
the wxPyTypeCast hack that has been in wxPython for so long.
|
|
|
|
<p>Even with wxPyTypeCast there was the issue that the object returned
|
|
was not the same one that was created in Python originally, but a new
|
|
object of the same type that wraps the same C++ pointer. If the
|
|
programmer has set additional attributes of that original object they
|
|
will not exist in the new object.
|
|
|
|
<p>For a long time now I have wanted to do away with wxPyTypeCast and
|
|
also find a way to return the original Python object from methods like
|
|
FindWindowById. This project naturally divides into two phases:
|
|
|
|
<p><ol>
|
|
|
|
<li>Teach the wrapper methods how to return objects of the right type,
|
|
and be able to then turn wxPyTypeCast in to a no-op.
|
|
|
|
<li>Be able to return the original Python shadow object if it still exists.
|
|
|
|
</ol>
|
|
|
|
<p>The first button below shows the first of these phases (<i>working</i>)
|
|
and the second will show #2 (<i>working as of 2.3.2</i>)
|
|
|
|
</body></html>
|
|
"""
|