docs/latex/wx/wxPython.tex

   1 \chapter{wxPython Notes}\label{wxPython}
   2 \pagenumbering{arabic}%
   3 \setheader{{\it CHAPTER \thechapter}}{}{}{}{}{{\it CHAPTER \thechapter}}%
   4 \setfooter{\thepage}{}{}{}{}{\thepage}%
   5
   6 This addendum is written by Robin Dunn, author of the wxPython wrapper
   7
   8 %----------------------------------------------------------------------
   9 \section{What is wxPython?}\label{wxpwhat}
  10
  11 wxPython is a blending of the wxWindows GUI classes and the
  12 \urlref{Python}{http://www.python.org/} programming language.
  13
  14 \wxheading{Python}
  15
  16 So what is Python?  Go to
  17 \urlref{http://www.python.org}{http://www.python.org} to learn more,
  18 but in a nutshell Python is an interpreted,
  19 interactive, object-oriented programming language. It is often
  20 compared to Tcl, Perl, Scheme or Java.
  21
  22 Python combines remarkable power with very clear syntax. It has
  23 modules, classes, exceptions, very high level dynamic data types, and
  24 dynamic typing. There are interfaces to many system calls and
  25 libraries, and new built-in modules are easily written in C or
  26 C++. Python is also usable as an extension language for applications
  27 that need a programmable interface.
  28
  29 Python is copyrighted but freely usable and distributable, even for
  30 commercial use.
  31
  32 \wxheading{wxPython}
  33
  34 wxPython is a Python package that can be imported at runtime that
  35 includes a collection of Python modules and an extension module
  36 (native code). It provides a series of Python classes that mirror (or
  37 shadow) many of the wxWindows GUI classes. This extension module
  38 attempts to mirror the class heiarchy of wxWindows as closely as
  39 possble. This means that there is a wxFrame class in wxPython that
  40 looks, smells, tastes and acts almost the same as the wxFrame class in
  41 the C++ version.
  42
  43 wxPython is very versitile. It can be used to create standalone GUI
  44 applications, or in situations where Python is embedded in a C++
  45 application as an internal scripting or macro language.
  46
  47 Currently wxPython is available for Win32 platforms and the GTK
  48 toolkit (wxGTK) on most Unix/X-windows platforms. The effort to
  49 enable wxPython for wxMotif will begin shortly. See \helpref{Building Python}{wxpbuild} for
  50 details about getting wxPython working for you.
  51
  52 %----------------------------------------------------------------------
  53 \section{Why use wxPython?}\label{wxpwhy}
  54
  55 So why would you want to use wxPython over just C++ and wxWindows?
  56 Personally I prefer using Python for everything. I only use C++ when
  57 I absolutely have to eek more performance out of an algorithm, and even
  58 then I ususally code it as an extension module and leave the majority
  59 of the program in Python.
  60
  61 Another good thing to use wxPython for is quick prototyping of your
  62 wxWindows apps. With C++ you have to continuously go though the
  63 edit-compile-link-run cycle, which can be quite time consuming. With
  64 Python it is only an edit-run cycle. You can easily build an
  65 application in a few hours with Python that would normally take a few
  66 days or longer with C++. Converting a wxPython app to a C++/wxWindows app
  67 should be a straight forward task.
  68
  69 %----------------------------------------------------------------------
  70 \section{Other Python GUIs}\label{wxpother}
  71
  72 There are other GUI solutions out there for Python.
  73
  74 \wxheading{Tkinter}
  75
  76 Tkinter is the defacto standard GUI for Python. It is available
  77 on nearly every platform that Python and Tcl/TK are. Why Tcl/Tk?
  78 Well because Tkinter is just a wrapper around Tcl's GUI toolkit, Tk.
  79 This has its upsides and its downsides...
  80
  81 The upside is that Tk is a pretty versatile toolkit. It can be made
  82 to do a lot of things in a lot of different environments. It is fairly
  83 easy to create new widgets and use them interchangably in your
  84 programs.
  85
  86 The downside is Tcl. When using Tkinter you actually have two
  87 separate language interpreters running, the Python interpreter and the
  88 Tcl interpreter for the GUI. Since the guts of Tcl is mostly about
  89 string processing, it is fairly slow as well. (Not too bad on a fast
  90 Pentium II, but you really notice the difference on slower machines.)
  91
  92 It wasn't until the lastest version of Tcl/Tk that native Look and
  93 Feel was possible on non-Motif platforms. This is because Tk
  94 usually implements its own widgets (controls) even when there are
  95 native controls available.
  96
  97 Tkinter is a pretty low-level toolkit. You have to do a lot of work
  98 (verbose program code) to do things that would be much simpler with a higher
  99 level of abstraction.
 100
 101 \wxheading{PythonWin}
 102
 103 PythonWin is an add-on package for Python for the Win32 platform. It
 104 includes wrappers for MFC as well as much of the Win32 API. Because
 105 of its foundation, it is very familiar for programmers who have
 106 experience with MFC and the Win32 API. It is obviously not compatible
 107 with other platforms and toolkits. PythonWin is organized as separate
 108 packages and modules so you can use the pieces you need without having
 109 to use the GUI portions.
 110
 111 \wxheading{Others}
 112
 113 There are quite a few other GUI modules available for Python, some in
 114 active use, some that havn't been updated for ages. Most are simple
 115 wrappers around some C or C++ toolkit or another, and most are not
 116 cross-platform compatible. See \urlref{this link}{http://www.python.org/download/Contributed.html\#Graphics}
 117 for a listing of a few of them.
 118
 119 %----------------------------------------------------------------------
 120 \section{Building wxPython}\label{wxpbuild}
 121
 122 I used SWIG (\urlref{http://www.swig.org}{http://www.swig.org}) to
 123 to create the source code for the
 124 extension module. This enabled me to only have to deal with a small
 125 amount of code and only have to bother with the exceptional issues.
 126 SWIG takes care of the rest and generates all the repetative code for
 127 me. You don't need SWIG to build the extension module as all the
 128 generated C++ code is included under the src directory.
 129
 130 I added a few minor features to SWIG to control some of the code
 131 generation. If you want to play around with this you will need to get
 132 a recent version of SWIG from their CVS or from a daily build. See
 133 \urlref{http://www.swig.org/}{http://www.swig.org/} for details.
 134
 135 wxPython is organized as a Python package. This means that the
 136 directory containing the results of the build process should be a
 137 subdirectory of a directory on the \tt{PYTHONPATH}. (And preferably should
 138 be named wxPython.) You can control where the build process will dump
 139 wxPython by setting the \tt{TARGETDIR} variable for the build utility (see
 140 below).
 141
 142 \begin{enumerate}\itemsep=0pt
 143 \item Build wxWindows as described in its BuildCVS.txt file. For Unix
 144 systems I run configure with these flags:
 145
 146 \begin{verbatim}
 147                 --with-gtk
 148                 --with-libjpeg
 149                 --without-odbc
 150                 --enable-unicode=no
 151                 --enable-threads=yes
 152                 --enable-socket=yes
 153                 --enable-static=no
 154                 --enable-shared=yes
 155                 --disable-std_iostreams
 156 \end{verbatim}
 157
 158 You can use whatever flags you want, but I know these work.
 159
 160 For Win32 systems I use Visual C++ 6.0, but 5.0 should work also. The
 161 build utility currently does not support any other Win32 compilers.
 162
 163 \item At this point you may want to make an alias or symlink, script,
 164 batch file, whatever on the PATH that invokes \tt{\$(WXWIN)/utils/wxPython/distrib/build.py} to
 165 help simplify matters somewhat. For example, on my Win32 system I have a file named
 166  \tt{build}.bat in a directory on the PATH that contains:
 167
 168 \tt{python \%WXWIN/utils/wxPython/distrib/build.py \%1 \%2 \%3 \%4 \%5 \%6}
 169
 170 \item Change into the \tt{\$(WXWIN)/utils/wxPython/src} directory.
 171
 172 \item Type "\tt{build -b}" to build wxPython and "\tt{build -i}" to
 173 install it, or "\tt{build -bi}" to do both steps at once.
 174
 175 The build.py script actually generates a Makefile based on what it
 176 finds on your system and information found in the build.cfg file.
 177 If you have troubles building or you want it built or installed in
 178 a different way, take a look at the docstring in build.py. You are
 179 able to to override many configuration options in a file named
 180 build.local.
 181
 182 \item To build and install the add-on modules, change to the appropriate
 183 directory under \tt{\$(WXWIN)/utils/wxPython/modules} and run the build
 184 utility again.
 185
 186 \item Change to the \tt{\$(WXWIN)/utils/wxPython/demo} directory.
 187
 188 \item Try executing the demo program. For example:
 189
 190 \tt{python demo.py}
 191
 192 To run it without requiring a console on Win32, you can use the
 193 \tt{pythonw.exe} version of Python either from the command line or from a
 194 shortcut.
 195 \end{enumerate}
 196
 197 %----------------------------------------------------------------------
 198 \section{Using wxPython}\label{wxpusing}
 199
 200 \wxheading{First things first...}
 201
 202 I'm not going to try and teach the Python language here. You can do
 203 that at the \urlref{Python Tutorial}{http://www.python.org/doc/tut/tut.html}.
 204 I'm also going to assume that you know a bit about wxWindows already,
 205 enough to notice the similarities in the classes used.
 206
 207 Take a look at the following wxPython program. You can find a similar
 208 program in the \tt{wxPython/demo} directory, named \tt{DialogUnits.py}. If your
 209 Python and wxPython are properly installed, you should be able to run
 210 it by issuing this command:
 211
 212 \begin{indented}{1cm}
 213     \bftt{python DialogUnits.py}
 214 \end{indented}
 215
 216 \hrule
 217
 218 \begin{verbatim}
 219 001: ## import all of the wxPython GUI package
 220 002: from wxPython.wx import *
 221 003:
 222 004: ## Create a new frame class, derived from the wxPython Frame.
 223 005: class MyFrame(wxFrame):
 224 006:
 225 007:     def __init__(self, parent, id, title):
 226 008:         # First, call the base class' __init__ method to create the frame
 227 009:         wxFrame.__init__(self, parent, id, title,
 228 010:                          wxPoint(100, 100), wxSize(160, 100))
 229 011:
 230 012:         # Associate some events with methods of this class
 231 013:         EVT_SIZE(self, self.OnSize)
 232 014:         EVT_MOVE(self, self.OnMove)
 233 015:
 234 016:         # Add a panel and some controls to display the size and position
 235 017:         panel = wxPanel(self, -1)
 236 018:         wxStaticText(panel, -1, "Size:",
 237 019:                      wxDLG_PNT(panel, wxPoint(4, 4)),  wxDefaultSize)
 238 020:         wxStaticText(panel, -1, "Pos:",
 239 021:                      wxDLG_PNT(panel, wxPoint(4, 14)), wxDefaultSize)
 240 022:         self.sizeCtrl = wxTextCtrl(panel, -1, "",
 241 023:                                    wxDLG_PNT(panel, wxPoint(24, 4)),
 242 024:                                    wxDLG_SZE(panel, wxSize(36, -1)),
 243 025:                                    wxTE_READONLY)
 244 026:         self.posCtrl = wxTextCtrl(panel, -1, "",
 245 027:                                   wxDLG_PNT(panel, wxPoint(24, 14)),
 246 028:                                   wxDLG_SZE(panel, wxSize(36, -1)),
 247 029:                                   wxTE_READONLY)
 248 030:
 249 031:
 250 032:     # This method is called automatically when the CLOSE event is
 251 033:     # sent to this window
 252 034:     def OnCloseWindow(self, event):
 253 035:         # tell the window to kill itself
 254 036:         self.Destroy()
 255 037:
 256 038:     # This method is called by the system when the window is resized,
 257 039:     # because of the association above.
 258 040:     def OnSize(self, event):
 259 041:         size = event.GetSize()
 260 042:         self.sizeCtrl.SetValue("%s, %s" % (size.width, size.height))
 261 043:
 262 044:         # tell the event system to continue looking for an event handler,
 263 045:         # so the default handler will get called.
 264 046:         event.Skip()
 265 047:
 266 048:     # This method is called by the system when the window is moved,
 267 049:     # because of the association above.
 268 050:     def OnMove(self, event):
 269 051:         pos = event.GetPosition()
 270 052:         self.posCtrl.SetValue("%s, %s" % (pos.x, pos.y))
 271 053:
 272 054:
 273 055: # Every wxWindows application must have a class derived from wxApp
 274 056: class MyApp(wxApp):
 275 057:
 276 058:     # wxWindows calls this method to initialize the application
 277 059:     def OnInit(self):
 278 060:
 279 061:         # Create an instance of our customized Frame class
 280 062:         frame = MyFrame(NULL, -1, "This is a test")
 281 063:         frame.Show(true)
 282 064:
 283 065:         # Tell wxWindows that this is our main window
 284 066:         self.SetTopWindow(frame)
 285 067:
 286 068:         # Return a success flag
 287 069:         return true
 288 070:
 289 071:
 290 072: app = MyApp(0)     # Create an instance of the application class
 291 073: app.MainLoop()     # Tell it to start processing events
 292 074:
 293 \end{verbatim}
 294 \hrule
 295
 296 \wxheading{Things to notice}
 297
 298 \begin{enumerate}\itemsep=0pt
 299 \item At line 2 the wxPython classes, constants, and etc. are imported
 300 into the current module's namespace. If you prefer to reduce
 301 namespace pollution you can use "\tt{from wxPython import wx}" and
 302 then access all the wxPython identifiers through the wx module, for
 303 example, "\tt{wx.wxFrame}".
 304
 305 \item At line 13 the frame's sizing and moving events are connected to
 306 methods of the class. These helper functions are intended to be like
 307 the event table macros that wxWindows employs. But since static event
 308 tables are impossible with wxPython, we use helpers that are named the
 309 same to dynamically build the table. The only real difference is
 310 that the first arguemnt to the event helpers is always the window that
 311 the event table entry should be added to.
 312
 313 \item Notice the use of \tt{wxDLG\_PNT} and \tt{wxDLG\_SZE} in lines 19
 314 - 29 to convert from dialog units to pixels. These helpers are unique
 315 to wxPython since Python can't do method overloading like C++.
 316
 317 \item There is an \tt{OnCloseWindow} method at line 34 but no call to
 318 EVT\_CLOSE to attach the event to the method. Does it really get
 319 called?  The answer is, yes it does. This is because many of the
 320 \em{standard} events are attached to windows that have the associated
 321 \em{standard} method names. I have tried to follow the lead of the
 322 C++ classes in this area to determine what is \em{standard} but since
 323 that changes from time to time I can make no guarentees, nor will it
 324 be fully documented. When in doubt, use an EVT\_*** function.
 325
 326 \item At lines 17 to 21 notice that there are no saved references to
 327 the panel or the static text items that are created. Those of you
 328 who know Python might be wondering what happens when Python deletes
 329 these objects when they go out of scope. Do they disappear from the GUI?  They
 330 don't. Remember that in wxPython the Python objects are just shadows of the
 331 coresponding C++ objects. Once the C++ windows and controls are
 332 attached to their parents, the parents manage them and delete them
 333 when necessary. For this reason, most wxPython objects do not need to
 334 have a \_\_del\_\_ method that explicitly causes the C++ object to be
 335 deleted. If you ever have the need to forcibly delete a window, use
 336 the Destroy() method as shown on line 36.
 337
 338 \item Just like wxWindows in C++, wxPython apps need to create a class
 339 derived from \tt{wxApp} (line 56) that implements a method named
 340 \tt{OnInit}, (line 59.) This method should create the application's
 341 main window (line 62) and use \tt{wxApp.SetTopWindow()} (line 66) to
 342 inform wxWindows about it.
 343
 344 \item And finally, at line 72 an instance of the application class is
 345 created. At this point wxPython finishes initializing itself, and calls
 346 the \tt{OnInit} method to get things started. (The zero parameter here is
 347 a flag for functionality that isn't quite implemented yet. Just
 348 ignore it for now.)  The call to \tt{MainLoop} at line 73 starts the event
 349 loop which continues until the application terminates or all the top
 350 level windows are closed.
 351 \end{enumerate}
 352
 353 %----------------------------------------------------------------------
 354 \section{wxWindows classes implemented in wxPython}\label{wxpclasses}
 355
 356 The following classes are supported in wxPython. Most provide nearly
 357 full implementations of the public interfaces specified in the C++
 358 documentation, others are less so. They will all be brought as close
 359 as possible to the C++ spec over time.
 360
 361 \begin{itemize}\itemsep=0pt
 362 \item \helpref{wxAcceleratorEntry}{wxacceleratorentry}
 363 \item \helpref{wxAcceleratorTable}{wxacceleratortable}
 364 \item \helpref{wxActivateEvent}{wxactivateevent}
 365 \item \helpref{wxBitmapButton}{wxbitmapbutton}
 366 \item \helpref{wxBitmap}{wxbitmap}
 367 \item wxBMPHandler
 368 \item \helpref{wxBoxSizer}{wxboxsizer}
 369 \item \helpref{wxBrush}{wxbrush}
 370 \item \helpref{wxBusyInfo}{wxbusyinfo}
 371 \item \helpref{wxBusyCursor}{wxbusycursor}
 372 \item \helpref{wxButton}{wxbutton}
 373 \item \helpref{wxCalculateLayoutEvent}{wxcalculatelayoutevent}
 374 \item wxCaret
 375 \item \helpref{wxCheckBox}{wxcheckbox}
 376 \item \helpref{wxCheckListBox}{wxchecklistbox}
 377 \item \helpref{wxChoice}{wxchoice}
 378 \item \helpref{wxClientDC}{wxclientdc}
 379 \item \helpref{wxCloseEvent}{wxcloseevent}
 380 \item \helpref{wxColourData}{wxcolourdata}
 381 \item \helpref{wxColourDialog}{wxcolourdialog}
 382 \item \helpref{wxColour}{wxcolour}
 383 \item \helpref{wxComboBox}{wxcombobox}
 384 \item \helpref{wxCommandEvent}{wxcommandevent}
 385 \item \helpref{wxConfig}{wxconfigbase}
 386 \item \helpref{wxControl}{wxcontrol}
 387 \item \helpref{wxCursor}{wxcursor}
 388 \item \helpref{wxDC}{wxdc}
 389 \item \helpref{wxDialog}{wxdialog}
 390 \item \helpref{wxDirDialog}{wxdirdialog}
 391 \item \helpref{wxDropFilesEvent}{wxdropfilesevent}
 392 \item \helpref{wxEraseEvent}{wxeraseevent}
 393 \item \helpref{wxEvent}{wxevent}
 394 \item \helpref{wxEvtHandler}{wxevthandler}
 395 \item \helpref{wxFileDialog}{wxfiledialog}
 396 \item \helpref{wxFocusEvent}{wxfocusevent}
 397 \item \helpref{wxFontData}{wxfontdata}
 398 \item \helpref{wxFontDialog}{wxfontdialog}
 399 \item \helpref{wxFont}{wxfont}
 400 \item \helpref{wxFrame}{wxframe}
 401 \item \helpref{wxGauge}{wxgauge}
 402 \item wxGIFHandler
 403 \item wxGLCanvas
 404 \item wxGridCell
 405 \item wxGridEvent
 406 \item \helpref{wxGrid}{wxgrid}
 407 \item \helpref{wxHtmlCell}{wxhtmlcell}
 408 \item \helpref{wxHtmlContainerCell}{wxhtmlcontainercell}
 409 \item \helpref{wxHtmlDCRenderer}{wxhtmldcrenderer}
 410 \item \helpref{wxHtmlEasyPrinting}{wxhtmleasyprinting}
 411 \item \helpref{wxHtmlParser}{wxhtmlparser}
 412 \item \helpref{wxHtmlTagHandler}{wxhtmltaghandler}
 413 \item \helpref{wxHtmlTag}{wxhtmltag}
 414 \item \helpref{wxHtmlWinParser}{wxhtmlwinparser}
 415 \item \helpref{wxHtmlPrintout}{wxhtmlprintout}
 416 \item \helpref{wxHtmlWinTagHandler}{wxhtmlwintaghandler}
 417 \item \helpref{wxHtmlWindow}{wxhtmlwindow}
 418 \item wxIconizeEvent
 419 \item \helpref{wxIcon}{wxicon}
 420 \item \helpref{wxIdleEvent}{wxidleevent}
 421 \item \helpref{wxImage}{wximage}
 422 \item \helpref{wxImageHandler}{wximagehandler}
 423 \item \helpref{wxImageList}{wximagelist}
 424 \item \helpref{wxIndividualLayoutConstraint}{wxindividuallayoutconstraint}
 425 \item \helpref{wxInitDialogEvent}{wxinitdialogevent}
 426 \item \helpref{wxJoystickEvent}{wxjoystickevent}
 427 \item wxJPEGHandler
 428 \item \helpref{wxKeyEvent}{wxkeyevent}
 429 \item \helpref{wxLayoutAlgorithm}{wxlayoutalgorithm}
 430 \item \helpref{wxLayoutConstraints}{wxlayoutconstraints}
 431 \item \helpref{wxListBox}{wxlistbox}
 432 \item \helpref{wxListCtrl}{wxlistctrl}
 433 \item \helpref{wxListEvent}{wxlistevent}
 434 \item \helpref{wxListItem}{wxlistctrlsetitem}
 435 \item \helpref{wxMDIChildFrame}{wxmdichildframe}
 436 \item \helpref{wxMDIClientWindow}{wxmdiclientwindow}
 437 \item \helpref{wxMDIParentFrame}{wxmdiparentframe}
 438 \item \helpref{wxMask}{wxmask}
 439 \item wxMaximizeEvent
 440 \item \helpref{wxMemoryDC}{wxmemorydc}
 441 \item \helpref{wxMenuBar}{wxmenubar}
 442 \item \helpref{wxMenuEvent}{wxmenuevent}
 443 \item \helpref{wxMenuItem}{wxmenuitem}
 444 \item \helpref{wxMenu}{wxmenu}
 445 \item \helpref{wxMessageDialog}{wxmessagedialog}
 446 \item \helpref{wxMetaFileDC}{wxmetafiledc}
 447 \item \helpref{wxMiniFrame}{wxminiframe}
 448 \item \helpref{wxMouseEvent}{wxmouseevent}
 449 \item \helpref{wxMoveEvent}{wxmoveevent}
 450 \item \helpref{wxNotebookEvent}{wxnotebookevent}
 451 \item \helpref{wxNotebook}{wxnotebook}
 452 \item \helpref{wxPageSetupDialogData}{wxpagesetupdialogdata}
 453 \item \helpref{wxPageSetupDialog}{wxpagesetupdialog}
 454 \item \helpref{wxPaintDC}{wxpaintdc}
 455 \item \helpref{wxPaintEvent}{wxpaintevent}
 456 \item \helpref{wxPalette}{wxpalette}
 457 \item \helpref{wxPanel}{wxpanel}
 458 \item \helpref{wxPen}{wxpen}
 459 \item wxPNGHandler
 460 \item \helpref{wxPoint}{wxpoint}
 461 \item \helpref{wxPostScriptDC}{wxpostscriptdc}
 462 \item \helpref{wxPreviewFrame}{wxpreviewframe}
 463 \item \helpref{wxPrintData}{wxprintdata}
 464 \item \helpref{wxPrintDialogData}{wxprintdialogdata}
 465 \item \helpref{wxPrintDialog}{wxprintdialog}
 466 \item \helpref{wxPrinter}{wxprinter}
 467 \item \helpref{wxPrintPreview}{wxprintpreview}
 468 \item \helpref{wxPrinterDC}{wxprinterdc}
 469 \item \helpref{wxPrintout}{wxprintout}
 470 \item \helpref{wxQueryLayoutInfoEvent}{wxquerylayoutinfoevent}
 471 \item \helpref{wxRadioBox}{wxradiobox}
 472 \item \helpref{wxRadioButton}{wxradiobutton}
 473 \item \helpref{wxRealPoint}{wxrealpoint}
 474 \item \helpref{wxRect}{wxrect}
 475 \item \helpref{wxRegionIterator}{wxregioniterator}
 476 \item \helpref{wxRegion}{wxregion}
 477 \item \helpref{wxSashEvent}{wxsashevent}
 478 \item \helpref{wxSashLayoutWindow}{wxsashlayoutwindow}
 479 \item \helpref{wxSashWindow}{wxsashwindow}
 480 \item \helpref{wxScreenDC}{wxscreendc}
 481 \item \helpref{wxScrollBar}{wxscrollbar}
 482 \item \helpref{wxScrollEvent}{wxscrollevent}
 483 \item \helpref{wxScrolledWindow}{wxscrolledwindow}
 484 \item \helpref{wxScrollWinEvent}{wxscrollwinevent}
 485 \item wxShowEvent
 486 \item \helpref{wxSingleChoiceDialog}{wxsinglechoicedialog}
 487 \item \helpref{wxSizeEvent}{wxsizeevent}
 488 \item \helpref{wxSize}{wxsize}
 489 \item \helpref{wxSizer}{wxsizer}
 490 \item wxSizerItem
 491 \item \helpref{wxSlider}{wxslider}
 492 \item \helpref{wxSpinButton}{wxspinbutton}
 493 \item wxSpinEvent
 494 \item \helpref{wxSplitterWindow}{wxsplitterwindow}
 495 \item \helpref{wxStaticBitmap}{wxstaticbitmap}
 496 \item \helpref{wxStaticBox}{wxstaticbox}
 497 \item \helpref{wxStaticBoxSizer}{wxstaticboxsizer}
 498 \item wxStaticLine
 499 \item \helpref{wxStaticText}{wxstatictext}
 500 \item \helpref{wxStatusBar}{wxstatusbar}
 501 \item \helpref{wxSysColourChangedEvent}{wxsyscolourchangedevent}
 502 \item \helpref{wxTaskBarIcon}{wxtaskbaricon}
 503 \item \helpref{wxTextCtrl}{wxtextctrl}
 504 \item \helpref{wxTextEntryDialog}{wxtextentrydialog}
 505 \item \helpref{wxTimer}{wxtimer}
 506 \item wxToolBarTool
 507 \item \helpref{wxToolBar}{wxtoolbar}
 508 \item wxToolTip
 509 \item \helpref{wxTreeCtrl}{wxtreectrl}
 510 \item \helpref{wxTreeEvent}{wxtreeevent}
 511 \item \helpref{wxTreeItemData}{wxtreeitemdata}
 512 \item wxTreeItemId
 513 \item \helpref{wxUpdateUIEvent}{wxupdateuievent}
 514 \item \helpref{wxValidator}{wxvalidator}
 515 \item \helpref{wxWindowDC}{wxwindowdc}
 516 \item \helpref{wxWindow}{wxwindow}
 517
 518
 519
 520 \end{itemize}
 521
 522 %----------------------------------------------------------------------
 523 \section{Where to go for help}\label{wxphelp}
 524
 525 Since wxPython is a blending of multiple technologies, help comes from
 526 multiple sources. See
 527 \urlref{http://alldunn.com/wxPython}{http://alldunn.com/wxPython} for details on
 528 various sources of help, but probably the best source is the
 529 wxPython-users mail list. You can view the archive or subscribe by
 530 going to
 531
 532 \urlref{http://starship.python.net/mailman/listinfo/wxpython-users}{http://starship.python.net/mailman/listinfo/wxpython-users}
 533
 534 Or you can send mail directly to the list using this address:
 535
 536 wxpython-users@starship.python.net
 537