CHANGES.txt for wxPython ---------------------------------------------------------------------- ????? ----- Removed initial startup dependency on the OpenGL DLLs so only the glcanvasc.pyd depends on them. Changed wxFont, wxPen, wxBrush to not implicitly use the wxThe[Font|Pen|Brush]List behind the scenes, but to use normal ctor and dtors. Exposed the wxThe[Font|Pen|Brush]List to wxPython. Also added wxTheColourDatabase and added a library module (in the wxPython.lib.colourdb module) to load LOTS more colour names into the colour database. Added wxWakeUpMainThread, wxMutexGuiEnter, wxMutexGuiLeave, wxMutexGuiLocker and wxThread_IsMain to assist with dealing with GUI access from non-GUI threads. wxPyOnDemandOutputWindow is now (more) thread safe if non-GUI threads use print, sys.stdout.write, etc. Added CreateTextSizer and CreateButtonSizer to wxDialog Added wxPython/lib/infoframe.py from Chris Fama. It contains a class that can be used in place of wxPyOnDemandOutputWindow. Added colourselect.py, imagebrowser.py and an updated calendar.py to wxPython/lib from Lorne White. Added patch to wxPoint_LIST_helper from Tim Hochberg that should make it gobs faster in certain situations. Added tools that will take an image file in a wx supported format and convert it to data embedded in a Python source file. The image is converted to XPM format (with its transparency mask intact, if there is one) which is essentially a list of strings containing info about each pixel. It is then pickled and optionally compressed and written to a Python source file along with functions to convert it to either a wxBitmap or a wxImage. See wxPython/demo/images.py for examples, and wxPython/Tools/img2py.py for the implementation. Fixed wxStyledTextCtrl to be much faster on wxGTK. There was some experimental code that got left in place that ended up causing way too many refreshes. A couple hacks in my_distutils.py so wxPython can be built with the distutils that comes with Python 2.1. Added a ton of missing methods for wxPrintData. Switched to InnoSetup for MSW distributions. 2.2.6 ----- No changes happened in the Python wrappers for this release, only changes and fixes in the wxWindows library. 2.2.5 ----- New typemaps for wxString when compiling for Python 2.0 and beyond that allow Unicode objects to be passed as well as String objects. If a Unicode object is passed PyString_AsStringAndSize is used to convert it to a wxString using the default encoding. Fixed the generic buttons so tool tips work for them. Fixed a bug in the demo's tree control. Added a listbox to the listbox demo that shows how to find items with a matching prefix as keys are typed. Added code to the wxListCtrl demo to show how to get text from a column in report mode. Added code to the toolbar demo to clear the long help from the status bar after 2 seconds. Added wxJoystick. Fixed wxTimer so it can be used as described in the docs, either with a Notify method in a subclass, or sending an event to a wxEvtHandler object, (usually a window.) Added wxNotifyEvent.Allow() Fixed GOBS of reference leaks. Massive code changes and cleanup to allow wxPython to be split into multiple extension modules again. A Python CObject is used to allow the "export" of SWIG functions and other common helper functions from the wxc module to other modules, even if they are in separate shared libraries. Should also be usable from 3rd party code, just include wxPython/src/export.h Changed the default setup so the following are built as separate extension modules: calendar, glcanvas, grid, html, ogl, stc, and utils. Will probably add more later. Changed the wxPrinterDC to use the new constructor taking a wxPrintData object. The old ctor is still there using the wxPrinterDC2 name. Added wxPython.lib.anchors.py from Riaan Booysen. It contains a class that implements Delphi's Anchors with wxLayoutConstraints. Added wxPython.lib.fancytext from Timothy Hochberg. Changed the GenericButtons to send their event in idle time, so the mouse won't be captured when the event handler is called. Added wxPython.lib.rpcMixin from Greg Landrum, although it's not integrated with the demo yet. It allows a wxPython GUI to be an XML-RPC server. New in 2.2.2 ------------ Significantly changed how the wxStyledtextCtrl code that wraps Scintilla is implemented. Most of it is now automatically generated from an interface definition file provided by Scintilla. This means that it will be much easier to stay in sync with new Scintilla releases, but also means that some of the method and identifier names have changed. See wxPython/demo/data/stc.h for a copy of the C++ interface from which the Python interface is generated. There is now some inline documentation in that file that should really help explain how things work. I am now using the Python Distutils to build wxPython and to make some of the distribution files. (See http://www.python.org/sigs/distutils-sig/) This means no more messing with my kludgy build.py/Makefile hack, builds will be more consistent with other Python extensions that also use Distutils, and will hopefully make wxPython easier to build for platforms where there have been troubles before. If you are building wxPython for Python 1.5.2 or for 1.6, then you will need to get and install version 1.0 of Distutils from the website above. If you are using Python 2.0 then you already have it. Added wxInputStream and the wxFileSystem family of classes, contributed by Joerg Baumann. Added wxProcess and support for it to wxExecute. wxProcess lets you get notified when an asyncronous child process terminates, and also to get input/output streams for the child process's stdout, stderr and stdin. Removed the old python sizers. Added __add__, __sub__ and __cmp__ (equality check only) for wxPoint and wxRealPoint. Changed the build to make one big extension module instead of one for the core and each contrib. This allowed me to do away with the libwxPyHelpers.so on unix systems. Lots of little fixes here and there. Some hacks on wxGTK to try and make the AutoComplete listbox in the wxStyledTextCtrl to behave better. It's still not as nice as on wxMSW, but at least it's a bit more usable now. New in 2.2.1 ------------ Various tweaks, fixes, missing methods, etc. Added example use of wxTaskBarIcon to the demo. New in 2.2.0 ------------ Added wxLog and friends. Added wxFrame.ShowFullScreen for MSW. Added PyShellWindow to the wxPython.lib package. New in 2.1.16 ------------- Added an attribute named labelDelta to the generic buttons that specifies how far to offset the label when the button is in the depressed state. Added wxTipProvider and friends. See the demo for an example. wxGrid can now change the cell highlight colour. Added wxDragImage. Fixed printing on wxGTK. Added wxDateTime, wxTimeSpan, and wxDateSpan to wxPython.utils. Added wxCalendarCtrl. WARNING: A while back I asked what should be done about the Magic Method Names. (Methods that are automatically turned into event handlers by virtue of their name.) The consensus was that it is more confusing to have them than to try and expand them to have greater coverage. I am finally getting around to removing the code that generates the event binding. This means that if you are using any of the following method names without a EVT_* call that you need to modify your code to add the EVT_* to hook the event to the method. OnChar OnSize OnEraseBackground OnSysColourChanged OnInitDialog OnPaint OnIdle OnActivate OnMenuHighlight OnCloseWindow OnScroll Added wxSpinCtrl. New in 2.1.15 ------------- Fixed wxTreeCtrl.HitTest to return both the tree item as well as the flags that clairify where the click was in relation to the item. Fixed thread state problem in wxTreeCtrl.GetBoundingBox and GetSelections. Fixed some problems in OGL. Also wxShape.SetClientData and .GetClientData can now deal with Python objects. Added wxListCtrl.SortItems and changed the demo to show how to use it. Plugged a memory leak. Wrapped the new wxGrid and friends. The old wxGrid class is no longer available. There are some incompatibilities, and unfortunately the new classes are not documented yet, (however the methods are more consistent with each other now so you may be able to guess pretty good...) Updated filebrowsebutton.py and calendar.py with changes from their authors. There is now a FileBrowseButtonWithHistory class (what a mouthful!) and wxCalendar has printing support. Added ActiveXWrapper to the library, and some good demos of it too. It works great for embedding a COM (a.k.a OCX, a.k.a ActiveX) control in a window and calling its methods. It actually creates a new class on the fly that derives from wxWindow, the COM CoClass and others needed to make it all work. The resulting class can be instantiated just like wxWindow, used in sizers, etc. It also responds to all COM method calls, properties, etc., and if the class or a mix-in has matching method names, then the COM events will be propogated back to them. Created a typemap that allows a string to be used for parameters expecting a wxColour type. The string is either a colour name as defined in the wxColourDatabase, or a colour spec of the form "#RRGGBB". See the wxStyledTextCtrl demo for an example. I almost forgot to mention the wxStyledTextCtrl! Yes, the wxStyledTextCtrl is finally in wxPython!! (And the crowd goes wild...) There's no documentaTion yet (the crowd boos and hisses...) but I've included a very readable source file in the wxPython/demo/data directory, a couple fairly good examples, and you can also refer to the Scintilla documentaion at http://www.scintilla.org/ScintillaDoc.html to help fill in the gaps until the docs are done. (The croud murmers contentedly as the tool provider smiles convincingly and removes his flame-proof suit.) What's new in 2.1.13 -------------------- Skipped a version number to match what has been released for wxGTK. Updated wxMVCTree and added a demo for it, also fixed layout on GTK and some flicker problems. Added a wrapper class for the Visualization ToolKit (or VTK) in the wxPython.lib.vtk module. (http://www.kitware.com/) Fixed wxTreeCtrl.SetItemImage and GetItemImage to recognise the new "which" parameter. Added wxPython.lib.spashscreen from Mike Fletcher. Added wxPython.lib.filebrowsebutton also from Mike Fletcher. Renamed wxTreeCtrl.GetParent to GetItemParent to avoid a name clash with wxWindow.GetParent. Added wxIntersectRect to compute the intersection of two wxRect's. It is used like this: intersect = wxIntersectRect(rect1, rect2) If r1 and r2 don't intersect then None is returned, otherwise the rectangle representing the intersection is returned. Some bug fixes for Clipboard and Drag-n-Drop. Rotated text!!! WooHoo! (See wxDC.DrawRotatedText()) Added a set of Generic Buttons to the library. These are simple window classes that look and act like native buttons, but you can have a bit more control over them. The bezel width can be set in addition to colours, fonts, etc. There is a ToggleButton as well as Bitmap versions too. They should also serve as a good example of how to create your own classes derived from wxControl. The C++ wxToolBar classes have been redone, and so have the wxPython wrappers. There have been slight modifications to some of the methods but shouldn't impact anybody too much. I took the opportunity to add support for setting user data on each toolbar tool. The new AddTool methods look like this: def AddTool(ID, bitmap, pushedBitmap = wxNullBitmap, toggle = FALSE, clientData = NULL, shortHelpString = "", longHelpString = "") def AddSimpleTool(ID, bitmap, shortHelpString = "", longHelpString = "", toggle=FALSE) There are also coresponding InsertTool and InsertSimpleTool methods that additionally take an integer position as the first parameter. Added a wrapper for the new PCX and TIFF ImageHandlers. wxRect now simulates attributes named left, right, top and bottom. Removed all non wx stuff from the glcanvas module since DA's PyOpenGL is better and compatible with the wxGLCanvas. You can get it at http://starship.python.net:9673/crew/da/Code/PyOpenGL. Added some missing EVT_ functions. Added Dirk Holtwic's editor classes to the wxPython.lib.editor package. Changed all the "LIST" parameter names to "choices" to match the docs. More fixes for the wxFloatBar, and it now works on wxGTK even better than wxMSW! (The feat is accomplished by using the wxTB_DOCKABLE style flag instead of trying to float it ourselves.) What's new in 2.1.11 -------------------- Skipped a few version numbers so wxMSW, wxGTK and wxPython are all syncronized. wxImage.SetData now makes a copy of the image data before giving it to wxImage. I mistakenly thought that wxImage would copy the data itself. Fixed wxMSW's notebook so the pages get their size set as they are being added. This should remove the need for our wxNotebook.ResizeChildren hack. wxPanels now support AutoLayout, and wxNotebooks and wxSplitterWindows no longer tell their children to Layout() themselves. This will probably only effect you if you have a wxWindow with AutoLayout inside a notebook or splitter. If so, either change it to a wxPanel or add an EVT_SIZE handler that calls Layout(). Fixed deadlock problem that happened when using threads. Added new HTML printing classes. Added wxWindow.GetHandle Apparently wxMouseEvent.Position has been depreciated in wxWindows as it is no longer available by default. You can use GetPositionTuple (returning a tuple with x,y) instead, or GetPosition (returning a wxPoint.) Added wxPostEvent function that allows events to be posted and then processed later. This is a thread-safe way to interact with the GUI thread from other threads. Added Clipboard and Drag-and-Drop classes. Added wxFontEnumerator. Many updates to wxMenu, wxMenuBar. wxPyEvent and wxPyCommandEvent derived classes now give you the actual Python object in the event handler instead of a new shadow. Added a Calendar widget from Lorne White to the library. Made some fixes to the wxFloatbar. It still has some troubles on wxGTK... Added an MVC tree control from Bryn Keller to the library. What's new in 2.1.5 ------------------- This is a quick bug-fix release to take care of a few nasties that crept in at the last minute before 2.1.4 was called done. No new major features. What's new in 2.1.4 -------------------- This release is NOT syncronized with a snapshot release of wxGTK or wxMSW. For MSW this isn't much of a problem since you can get the binaries from the web site. For other platforms you'll have to build wxGTK from CVS. (See http://web.ukonline.co.uk/julian.smart/wxwin/cvs.htm) To get the same set of sources from CVS that I used, checkout using the wxPy-2-1-4 tag. Now back to what's new... Much more support for event-less callbacks and add-on modules. Created add-on module with wxOGL classes. Added wxWindow.GetChildren(). Be careful of this. It returns a *copy* of the list of the window's children. While you are using the list if anything changes in the real list (a child is deleted, etc.) then the list you are holding will suddenly have window references to garbage memory and your app will likely crash. But if you are careful it works great! Added a bunch of new and missing methods to wxTreeCrtl. The SortChildren method is now supported, but currently only for the default sort order. Added typemaps for wxSize, wxPoint, wxRealPoint, and wxRect that allow either the actual objects or Python sequence values to be used. For example, the following are equivallent: win = wxWindow(parent, size = wxSize(100, 100)) win = wxWindow(parent, size = (100, 100)) Super-charged the wxHtml module. You can now create your own tag handlers and also have access to the parser and cell classes. There is a tag handler in the library at wxPython.lib.wxpTag that understands the WXP tag and is able to place wxPython windows on HTML pages. See the demo for an example. A bunch of the methods of wxMenuBar were previously ifdef'd out for wxGTK. Added them back in since the methods exist now. Wrapped the wxHtmlHelpController and related classes. Wrapped the C++ versions of wxSizer and friends. The Python-only versions are still in the library, but depreciated. (You will get a warning message if you try to use them, but the warning can be disabled.) The usage of the C++ versions is slightly different, and the functionality of wxBorderSizer is now part of wxBoxSizer. I have added a few methods to wxSizer to try and make the transition as smooth as possible, I combined all Add methods into a single method that handles all cases, added an AddMany method, etc. One step I did not take was to make the default value of flag in the Add method be wxGROW. This would have made it more backward compatible, but less portable to and from wxWin C++ code. Please see the docs and demo for further details. Added wxPyEvent and wxPyCommandEvent classes, derived from wxEvent and wxCommandEvent. Each of them has SetPyData and GetPyData methods that accept or return a single Python object. You can use these classes directly or derive from them to create your own types of event objects that can pass through the wxWindows event system without loosing their Python parts (as long as they are stored with SetPyData.) Stay tuned for more info and examples in future releases. Added wxPython.lib.grids as an example of how to derive a new sizer from the C++ sizers. In this module you will find wxGridSizer and wxFlexGridSizer. wxGridSizer arrainges its items in a grid in which all the widths and heights are the same. wxFlexgridSizer allows different widths and heights, and you can also specify rows and/or columns that are growable. See the demo for a couple examples for how to use them. Added the wxValidator class, and created a class named wxPyValidator that should be used for the base class of any Python validators. See the demo for an example. Please note that you MUST implement a Clone method in your validator classes because of the way some things work in the underlying C++ library. I did not add wxTextValidator because of some issues of how it transfers data to and from a wxString, which in wxPython is automatically translated to and from Python strings, so there would never be a concrete wxString that would hang around long enough for the validator to do its job. On the other hand, it should be real easy to duplicate the functionality of wxTextValidator in a pure Python class derived from wxPyValidator. I've finally added a feature that has been on my list for close to two years! Ever wondered what that zero is for when you create your app object? Well now you can leave it out or explicitly set it to a true value. This value now controls what is to be done with sys.stdout and sys.stderr. A false value leaves them alone, and a true value sets them to an instance of wxPyOnDemandOutputWindow. (On windows the default is true, on unix platforms the default is false.) This class creates a frame containing a wxTextCtrl as soon as anything is written to sys.stdout or sys.stderr. If you close the window it will come back again the next time something is written. (You can call app.RestoreStdio to turn this off.) If you would rather that the stdio be redirected to a file, you can provide a second parameter to your app object's constructor that is a filename. If you want to use your own class instead of wxPyOnDemandOutputWindow you can either implement RedirectStdio() in you app class or change the value of wxApp.outputWindowClass like this: class MyApp(wxApp): outputWindowClass = MyClass def OnInit(self): frame = MyFrame() self.SetTopWindow(frame) return true Please see the implementation of wxPyOnDemandOutputWindow and wxApp in wx.py for more details. A few words of caution: if you are running your app in a debugger, changing sys.stdout and sys.stderr is likely to really screw things up. Added wxCaret. Unfortunately it's author has still not documented it in the wxWindows docs... Some new 3rd party contributions in wxPython.lib. PyShell, in shell.py is an interesting implementaion of an interactive Python shell in wxWindows. floatbar.py has a class derived from wxToolBar that can sense mouse drags and then reparent itself into another frame. Moving the new frame close to where it came from puts the tool bar back into the original parent. (Unfortunately there is currently a bug in wxGTK's wxFrame.SetToolBar so the FloatBar has some problems...) What's new in 2.1b3 -------------------- This release is syncronized with release 2.1 snapshot 9 of wxWindows. Switched to using SWIG from CVS (see http://swig.cs.uchicago.edu/cvs.html) for some of the new features and such. Also they have encorporated my patches so there is really no reason to stick with the current (very old) release... This version of SWIG gives the following new features: 1. Keyword arguments. You no longer have to specify all the parameters with defaults to a method just to specify a non-default value on the end. You can now do this instead: win = wxWindow(parent, -1, style = mystyle) 2. There is now an an equivalence between Python's None and C++'s NULL. This means that any methods that might return NULL will now return None and you can use none where wxWindows might be expecting NULL. This makes things much more snake-ish. There is a new build system based on a new Python program instead of raw makefiles. Now wxPython builds are virtually the same on MSW or Unix systems. See the end of this file for new build instructions and see distrib/build.py for more details. wxDC.Bilt now includes the useMask parameter, and has been split into two different versions. wxDC.BlitXY is like what was there before and takes raw coordinants and sizes, and the new wxDC.Blit is for the new interface using wxPoints and a wxSize. What's new in 2.1b2 -------------------- Added the missing wxWindow.GetUpdateRegion() method. Made a new change in SWIG (update your patches everybody) that provides a fix for global shadow objects that get an exception in their __del__ when their extension module has already been deleted. It was only a 1 line change in .../SWIG/Modules/pycpp.cxx at about line 496 if you want to do it by hand. It is now possible to run through MainLoop more than once in any one process. The cleanup that used to happen as MainLoop completed (and prevented it from running again) has been delayed until the wxc module is being unloaded by Python. I fixed a bunch of stuff in the C++ version of wxGrid so it wouldn't make wxPython look bad. wxWindow.PopupMenu() now takes a wxPoint instead of x,y. Added wxWindow.PopupMenuXY to be consistent with some other methods. Added wxGrid.SetEditInPlace and wxGrid.GetEditInPlace. You can now provide your own app.MainLoop method. See wxPython/demo/demoMainLoop.py for an example and some explaination. Got the in-place-edit for the wxTreeCtrl fixed and added some demo code to show how to use it. Put the wxIcon constructor back in for GTK as it now has one that matches MSW's. Added wxGrid.GetCells Added wxSystemSettings static methods as functions with names like wxSystemSettings_GetSystemColour. Removed wxPyMenu since using menu callbacks have been depreciated in wxWindows. Use wxMenu and events instead. Added alternate wxBitmap constructor (for MSW only) as wxBitmapFromData(data, type, width, height, depth = 1) Added a helper function named wxPyTypeCast that can convert shadow objects of one type into shadow objects of another type. (Like doing a down-cast.) See the implementation in wx.py for some docs. Fixed wxImage GetData and SetData to properly use String objects for data transfer. Added access methods to wxGridEvent. New Makefile/Setup files supporting multiple dynamic extension modules for unix systems. Fixes for the wxGLCanvas demo to work around a strange bug in gtk. SWIG support routines now compiled separately instead of being bundled in wx.cpp. What's new in 2.1b1 -------------------- Fixed wxComboBox.SetSelection so that it actually sets the selected item. (Actually just removed it from wxPython and let it default to wxChoice.SetSelection which was already doing the right thing.) Added the Printing Framework. Switched back to using the wxWindows DLL for the pre-built Win32 version. The problem was needing to reinitialize static class info data after loading each extension module. Lots of little tweaks and additions to reflect changes to various wxWindows classes. Fixed a bug with attaching objects to tree items. Actually was a symptom of a larger problem with not obtaining the interpreter lock when doing any Py_DECREFs. wxSizer and friends. Sizers are layout tools that manage a colection of windows and sizers. Different types of sizers apply different types of layout algorithms. You saw it here first! These classes are not even in the wxWindows C++ library yet! What's new in 2.0b9 ------------------- Bug fix for ListCtrl in test4.py (Was a missing file... DSM!) Bug fix for occassional GPF on Win32 systems upon termination of a wxPython application. Added wxListBox.GetSelections returning selections as a Tuple. Added a wxTreeItemData that is able to hold any Python object and be associated with items in a wxTreeCtrl. Added test pytree.py to show this feature off. Added wxSafeYield function. OpenGL Canvas can be optionally compiled in to wxPython. Awesome new Demo Framework for showing off wxPython and for learning how it all works. The pre-built Win32 version is no longer distributing the wxWindows DLL. It is statically linked with the wxWindows library instead. Added a couple missing items from the docs. Added wxImage, wxImageHandler, wxPNGHandler, wxJPEGHandler, wxGIFHandler and wxBMPHandler. Added new methods to wxTextCtrl. Fixed some problems with how SWIG was wrapping some wxTreeCtrl methods. What's new in 2.0b8 ------------------- Support for using Python threads in wxPython apps. Several missing methods from various classes. Various bug fixes. What's new in 2.0b7 ------------------- Added DLG_PNT and DLG_SZE convienience methods to wxWindow class. Added missing constructor and other methods for wxMenuItem. What's new in 2.0b6 ------------------- Just a quickie update to fix the self-installer to be compatible with Python 1.5.2b2's Registry settings. What's new in 2.0b5 ------------------- Well obviously the numbering scheme has changed. I did this to reflect the fact that this truly is the second major revision of wxPython, (well the third actually if you count the one I did for wxWindows 1.68 and then threw away...) and also that it is associated with the 2.0 version of wxWindows. I have finally started documenting wxPython. There are several pages in the wxWindows documentation tree specifically about wxPython, and I have added notes within the class references about where and how wxPython diverges from wxWindows. Added wxWindow_FromHWND(hWnd) for wxMSW to construct a wxWindow from a window handle. If you can get the window handle into the python code, it should just work... More news on this later. Added wxImageList, wxToolTip. Re-enabled wxConfig.DeleteAll() since it is reportedly fixed for the wxRegConfig class. As usual, some bug fixes, tweaks, etc. What's new in 0.5.3 ------------------- Added wxSashWindow, wxSashEvent, wxLayoutAlgorithm, etc. Various cleanup, tweaks, minor additions, etc. to maintain compatibility with the current wxWindows. What's new in 0.5.0 ------------------- Changed the import semantics from "from wxPython import *" to "from wxPython.wx import *" This is for people who are worried about namespace pollution, they can use "from wxPython import wx" and then prefix all the wxPython identifiers with "wx." Added wxTaskbarIcon for wxMSW. Made the events work for wxGrid. Added wxConfig. Added wxMiniFrame for wxGTK. Changed many of the args and return values that were pointers to gdi objects to references to reflect changes in the wxWindows API. Other assorted fixes and additions. What's new in 0.4.2 ------------------- wxPython on wxGTK works!!! Both dynamic and static on Linux and static on Solaris have been tested. Many thanks go to Harm for his astute detective work on tracking down a nasty DECREF bug. Okay so I have to confess that it was just a DSM (Dumb Stupid Mistake) on my part but it was nasty none the less because the behavior was so different on different platforms. The dynamicly loaded module on Solaris is still segfaulting, so it must have been a different issue all along... What's New in 0.4 ----------------- 1. Worked on wxGTK compatibility. It is partially working. On a Solaris/Sparc box wxPython is working but only when it is statically linked with the Python interpreter. When built as a dyamically loaded extension module, things start acting weirdly and it soon seg-faults. And on Linux both the statically linked and the dynamically linked version segfault shortly after starting up. 2. Added Toolbar, StatusBar and SplitterWindow classes. 3. Varioius bug fixes, enhancements, etc. ----------------------------------------------------------------------