88 lines
3.8 KiB
HTML
88 lines
3.8 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>win32com Readme</title>
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</head>
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<body>
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<p><img width="551" height="99" id="_x0000_i1025"
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src="html%5Cimage%5Cpycom_blowing.gif"
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alt="Python and COM - Blowing the others away"> </p>
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<h1>Python COM Extensions Readme </h1>
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<p>This is the readme for win32com. Please check out the <a
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href="html/docindex.html">win32com documentation index</a></p>
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<p>The <a href="test/.">win32com/test directory</a> contains some interesting
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scripts (and a new <a href="test/readme.txt">readme.txt</a>). Although these
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are used for testing, they do show a variety of COM techniques.</p>
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<h3>VARIANT objects</h3>
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<p>win32com.client now has explicit VARIANT objects which can be used in
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situations where you need more control over the argument types passed when
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calling COM methods. See the <a href="html/variant.html">documentation on
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this object</a>
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<a name="currency"><h3>Important Currency changes</h3></a>
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<p>
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In all builds prior to 204, a COM currency value was returned as a tuple of
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integers. Working with 2 integers to represent a currency object was a poor
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choice, but the alternative was never clear. Now Python ships with the
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<a href="http://www.python.org/dev/doc/devel/lib/module-decimal.html">decimal</a>
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module, the alternative has arrived!
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</p>
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<p>
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Up until build 212, code could set <code>pythoncom.__future_currency__ = True</code>
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to force use of the decimal module, with a warning issued otherwise. In
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builds 213 and later, the decimal module is unconditionally used when
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pythoncon returns you a currency value.
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</p>
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<h3>Recent Changes</h3>
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<h4>Lots of internal changes on the road to py3k</h4>
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<h4>win32com.axcontrol and win2con.internet</h4>
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Many more interfaces for hosting AX controls and the interfaces
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used by Internet Explorer.
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<h4>win32com.shell</h4>
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The shell interfaces have undergone a number of enhancements and changes.
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A couple of methods have changed signature between the first build with shell support (200) and later builds.
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SHGetFileInfo was broken in its result handling, so had to be changed - this
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is the only function used by the samples that changed, but others not used by the samples also have changed.
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These shell interfaces are now generally stable.
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<h4>New win32com.taskscheduler module</h4>
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Roger Upole has contributed an interface to the Windows task scheduler. This is actually very neat, and it allows
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Python to edit the task list as shown by Windows Control Panel. Property page suppport may even appear later,
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now that the win32 library has the new win32rcparser module.
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<h4>ActiveX Scripting </h4>
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<p>Python only supports "trusted" execution hosts - thus, it will no longer work
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as an engine inside IE (Python itself no longer has a restricted execution environment).
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Python continues to work fine as an Active Scripting Engine in all other
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applications, including Windows Scripting Host, and ASP.
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<p>There is also support for Python as an ActiveX Scripting Host.</p>
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<p>Active Debugging seems to be fully functional.</p>
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<h4>Older stuff</h4>
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<ul>
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</li>
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<li>Unexpected exceptions in Python COM objects will generally now dump
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the exception and traceback to stdout. This is useful for debugging
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and testing - it means that in some cases there will be no need to register
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an object with <span style="font-style: italic;">--debug</span> to see these
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tracebacks. Note that COM objects used by server processes (such as
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ASP) generally have no valid stdout, so will still need to use <span
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style="font-style: italic;">--debug</span> as usual.<br>
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</li>
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<li>universal gateway support has been improved - we can now work as an
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Outlook Addin<br>
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</li>
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</body>
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</html>
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