wxPython/wxPython/lib/activexwrapper.py

   1 #----------------------------------------------------------------------
   2 # Name:        wxPython.lib.activexwrapper
   3 # Purpose:     a wxWindow derived class that can hold an ActiveX control
   4 #
   5 # Author:      Robin Dunn
   6 #
   7 # RCS-ID:      $Id$
   8 # Copyright:   (c) 2000 by Total Control Software
   9 # Licence:     wxWindows license
  10 #----------------------------------------------------------------------
  11
  12 from wxPython.wx import *
  13
  14 try:
  15     import win32ui
  16     import pywin.mfc.activex
  17     import win32com.client
  18 except ImportError:
  19     raise ImportError( "ActiveXWrapper requires PythonWin.  Please install the win32all-xxx.exe package.")
  20
  21 ##from win32con import WS_TABSTOP, WS_VISIBLE
  22 WS_TABSTOP = 0x00010000
  23 WS_VISIBLE = 0x10000000
  24
  25 #----------------------------------------------------------------------
  26
  27
  28 def MakeActiveXClass(CoClass, eventClass=None, eventObj=None):
  29     """
  30     Dynamically construct a new class that derives from wxWindow, the
  31     ActiveX control and the appropriate COM classes.  This new class
  32     can be used just like the wxWindow class, but will also respond
  33     appropriately to the methods and properties of the COM object.  If
  34     this class, a derived class or a mix-in class has method names
  35     that match the COM object's event names, they will be called
  36     automatically.
  37
  38     CoClass -- A COM control class from a module generated by
  39             makepy.py from a COM TypeLibrary.  Can also accept a
  40             CLSID.
  41
  42     eventClass -- If given, this class will be added to the set of
  43             base classes that the new class is drived from.  It is
  44             good for mix-in classes for catching events.
  45
  46     eventObj -- If given, this object will be searched for attributes
  47             by the new class's __getattr__ method, (like a mix-in
  48             object.)  This is useful if you want to catch COM
  49             callbacks in an existing object, (such as the parent
  50             window.)
  51
  52     """
  53
  54
  55     if type(CoClass) == type(""):
  56         # use the CLSID to get the real class
  57         CoClass = win32com.client.CLSIDToClass(CoClass)
  58
  59     # determine the base classes
  60     axEventClass = CoClass.default_source
  61     baseClasses = [wxWindow, pywin.mfc.activex.Control, CoClass, axEventClass]
  62     if eventClass:
  63         baseClasses.append(eventClass)
  64     baseClasses = tuple(baseClasses)
  65
  66     # define the class attributes
  67     className = 'AXControl_'+CoClass.__name__
  68     classDict = { '__init__'    : axw__init__,
  69                   '__getattr__' : axw__getattr__,
  70                   'axw_OnSize'  : axw_OnSize,
  71                   'axw_OEB'     : axw_OEB,
  72                   '_name'       : className,
  73                   '_eventBase'  : axEventClass,
  74                   '_eventObj'   : eventObj,
  75                   'Cleanup'     : axw_Cleanup,
  76                   }
  77
  78     # make a new class object
  79     import new
  80     classObj = new.classobj(className, baseClasses, classDict)
  81     return classObj
  82
  83
  84
  85
  86 # These functions will be used as methods in the new class
  87 def axw__init__(self, parent, ID, pos=wxDefaultPosition, size=wxDefaultSize, style=0):
  88     # init base classes
  89     pywin.mfc.activex.Control.__init__(self)
  90     wxWindow.__init__(self, parent, -1, pos, size, style)
  91
  92     win32ui.EnableControlContainer()
  93     self._eventObj = self._eventObj  # move from class to instance
  94
  95     # create a pythonwin wrapper around this wxWindow
  96     handle = self.GetHandle()
  97     self._wnd = win32ui.CreateWindowFromHandle(handle)
  98
  99     # create the control
 100     sz = self.GetSize()
 101     self.CreateControl(self._name, WS_TABSTOP | WS_VISIBLE,
 102                        (0, 0, sz.width, sz.height), self._wnd, ID)
 103
 104     # init the ax events part of the object
 105     self._eventBase.__init__(self, self._dispobj_)
 106
 107     # hook some wx events
 108     EVT_SIZE(self, self.axw_OnSize)
 109     EVT_ERASE_BACKGROUND(self, self.axw_OEB)
 110
 111
 112 def axw__getattr__(self, attr):
 113     try:
 114         return pywin.mfc.activex.Control.__getattr__(self, attr)
 115     except AttributeError:
 116         try:
 117             eo = self.__dict__['_eventObj']
 118             return getattr(eo, attr)
 119         except AttributeError:
 120             raise AttributeError('Attribute not found: %s' % attr)
 121
 122
 123 def axw_OnSize(self, event):
 124     sz = self.GetClientSize()                        # get wxWindow size
 125     self.MoveWindow((0, 0, sz.width, sz.height), 1)  # move the AXControl
 126
 127
 128 def axw_OEB(self, event):
 129     pass
 130
 131
 132 def axw_Cleanup(self):
 133     del self._wnd
 134     self.close()
 135     ## anything else???
 136
 137
 138
 139
 140