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1%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2%% Name: tsamples.tex
3%% Purpose: Samples description
4%% Author: Vadim Zeitlin
5%% Modified by:
6%% Created: 02.11.99
7%% RCS-ID: $Id$
8%% Copyright: (c) wxWidgets team
9%% License: wxWindows license
10%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
11% NB: please keep the subsections in alphabetic order!
12
13\section{wxWidgets samples}\label{samples}
14
15Probably the best way to learn wxWidgets is by reading the source of some 50+
16samples provided with it. Many aspects of wxWidgets programming can be learnt
17from them, but sometimes it is not simple to just choose the right sample to
18look at. This overview aims at describing what each sample does/demonstrates to
19make it easier to find the relevant one if a simple grep through all sources
20didn't help. They also provide some notes about using the samples and what
21features of wxWidgets are they supposed to test.
22
23There are currently more than 50 different samples as part of wxWidgets and
24this list is not complete. You should start your tour of wxWidgets with the
25\helpref{minimal sample}{sampleminimal} which is the wxWidgets version of
26"Hello, world!". It shows the basic structure of wxWidgets program and is the
27most commented sample of all - looking at its source code is recommended.
28
29The next most useful sample is probably the \helpref{controls}{samplecontrols}
30one which shows many of wxWidgets standard controls, such as buttons,
31listboxes, checkboxes, comboboxes etc.
32
33Other, more complicated controls, have their own samples. In this category you
34may find the following samples showing the corresponding controls:
35
36\begin{twocollist}\itemsep=0pt
37\twocolitem{\helpref{wxCalendarCtrl}{samplecalendar}}{Calendar a.k.a. date picker control}
38\twocolitem{\helpref{wxListCtrl}{samplelistctrl}}{List view control}
39\twocolitem{\helpref{wxTreeCtrl}{sampletreectrl}}{Tree view control}
40\twocolitem{\helpref{wxGrid}{samplegrid}}{Grid control}
41\end{twocollist}
42
43Finally, it might be helpful to do a search in the entire sample directory if
44you can't find the sample showing the control you are interested in by
45name. Most classes contained in wxWidgets occur in at least one of the samples.
46
47
48\subsection{Minimal sample}\label{sampleminimal}
49
50The minimal sample is what most people will know under the term Hello World,
51i.e. a minimal program that doesn't demonstrate anything apart from what is
52needed to write a program that will display a "hello" dialog. This is usually
53a good starting point for learning how to use wxWidgets.
54
55
56\subsection{Art provider sample}\label{sampleartprovider}
57
58The {\tt artprov} sample shows how you can customize the look of standard
59wxWidgets dialogs by replacing default bitmaps/icons with your own versions.
60It also shows how you can use wxArtProvider to
61get stock bitmaps for use in your application.
62
63
64\subsection{Calendar sample}\label{samplecalendar}
65
66This font shows the \helpref{calendar control}{wxcalendarctrl} in action. It
67shows how to configure the control (see the different options in the calendar
68menu) and also how to process the notifications from it.
69
70
71\subsection{Checklist sample}\label{samplechecklist}
72
73This sample demonstrates use of the \helpref{wxCheckListBox}{wxchecklistbox}
74class intercepting check, select and double click events. It also tests
75use of various methods modifying the control, such as by deleting items
76from it or inserting new ones (these functions are actually implemented in
77the parent class \helpref{wxListBox}{wxlistbox} so the sample tests that class
78as well). The layout of the dialog is created using a \helpref{wxBoxSizer}{wxboxsizer}
79demonstrating a simple dynamic layout.
80
81
82\subsection{Config sample}\label{sampleconfig}
83
84This sample demonstrates the \helpref{wxConfig}{wxconfigbase} classes in a platform
85independent way, i.e. it uses text based files to store a given configuration under
86Unix and uses the Registry under Windows.
87
88See \helpref{wxConfig overview}{wxconfigoverview} for the descriptions of all
89features of this class.
90
91
92\subsection{Controls sample}\label{samplecontrols}
93
94The controls sample is the main test program for most simple controls used in
95wxWidgets. The sample tests their basic functionality, events, placement,
96modification in terms of colour and font as well as the possibility to change
97the controls programmatically, such as adding an item to a list box etc. Apart
98from that, the sample uses a \helpref{wxNotebook}{wxnotebook} and tests most
99features of this special control (using bitmap in the tabs, using
100\helpref{wxSizers}{wxsizer} and \helpref{constraints}{wxlayoutconstraints} within
101notebook pages, advancing pages programmatically and vetoing a page change
102by intercepting the \helpref{wxNotebookEvent}{wxnotebookevent}.
103
104The various controls tested are listed here:
105
106\begin{twocollist}\itemsep=0pt
107\twocolitem{\helpref{wxButton}{wxbutton}}{Push button control, displaying text}
108\twocolitem{\helpref{wxBitmapButton}{wxbitmapbutton}}{Push button control, displaying a bitmap}
109\twocolitem{\helpref{wxCheckBox}{wxcheckbox}}{Checkbox control}
110\twocolitem{\helpref{wxChoice}{wxchoice}}{Choice control (a combobox without the editable area)}
111\twocolitem{\helpref{wxComboBox}{wxcombobox}}{A choice with an editable area}
112\twocolitem{\helpref{wxGauge}{wxgauge}}{A control to represent a varying quantity, such as time remaining}
113\twocolitem{\helpref{wxStaticBox}{wxstaticbox}}{A static, or group box for visually grouping related controls}
114\twocolitem{\helpref{wxListBox}{wxlistbox}}{A list of strings for single or multiple selection}
115\twocolitem{wxSpinCtrl}{A spin ctrl with a text field and a `up-down' control}
116\twocolitem{\helpref{wxSpinButton}{wxspinbutton}}{A spin or `up-down' control}
117\twocolitem{\helpref{wxStaticText}{wxstatictext}}{One or more lines of non-editable text}
118\twocolitem{\helpref{wxStaticBitmap}{wxstaticbitmap}}{A control to display a bitmap}
119\twocolitem{\helpref{wxRadioBox}{wxradiobox}}{A group of radio buttons}
120\twocolitem{\helpref{wxRadioButton}{wxradiobutton}}{A round button to be used with others in a mutually exclusive way}
121\twocolitem{\helpref{wxSlider}{wxslider}}{A slider that can be dragged by the user}
122\end{twocollist}
123
124
125\subsection{Database sample}\label{sampledb}
126
127The database sample is a small test program showing how to use the ODBC
128classes written by Remstar Intl. Obviously, this sample requires a
129database with ODBC support to be correctly installed on your system.
130
131
132\subsection{DebugRpt sample}\label{sampledebugrpt}
133
134This sample shows how to use \helpref{wxDebugReport}{wxdebugreport} class to
135generate a debug report in case of a program crash or otherwise. On start up,
136it proposes to either crash itself (by dereferencing a NULL pointer) or
137generate debug report without doing it. Next it initializes the debug report
138with standard information adding a custom file to it (just a timestamp) and
139allows to view the information gathered using
140\helpref{wxDebugReportPreview}{wxdebugreportpreview}.
141
142For the report processing part of the sample to work you should make available
143a Web server accepting form uploads, otherwise
144\helpref{wxDebugReportUpload}{wxdebugreportupload} will report an error.
145
146
147\subsection{Dialogs sample}\label{sampledialogs}
148
149This sample shows how to use the common dialogs available from wxWidgets. These
150dialogs are described in detail in the \helpref{Common dialogs overview}{commondialogsoverview}.
151
152
153\subsection{Dialup sample}\label{sampledialup}
154
155This sample shows the \helpref{wxDialUpManager}{wxdialupmanager}
156class. In the status bar, it displays the information gathered through its
157interface: in particular, the current connection status (online or offline) and
158whether the connection is permanent (in which case a string `LAN' appears in
159the third status bar field - but note that you may be on a LAN not
160connected to the Internet, in which case you will not see this) or not.
161
162Using the menu entries, you may also dial or hang up the line if you have a
163modem attached and (this only makes sense for Windows) list the available
164connections.
165
166
167\subsection{DnD sample}\label{samplednd}
168
169This sample shows both clipboard and drag and drop in action. It is quite non
170trivial and may be safely used as a basis for implementing the clipboard and
171drag and drop operations in a real-life program.
172
173When you run the sample, its screen is split in several parts. On the top,
174there are two listboxes which show the standard derivations of
175\helpref{wxDropTarget}{wxdroptarget}:
176\helpref{wxTextDropTarget}{wxtextdroptarget} and
177\helpref{wxFileDropTarget}{wxfiledroptarget}.
178
179The middle of the sample window is taken by the log window which shows what is
180going on (of course, this only works in debug builds) and may be helpful to see
181the sequence of steps of data transfer.
182
183Finally, the last part is used for dragging text from it to either one of the
184listboxes (only one will accept it) or another application. The last
185functionality available from the main frame is to paste a bitmap from the
186clipboard (or, in the case of the Windows version, also a metafile) - it will be
187shown in a new frame.
188
189So far, everything we mentioned was implemented with minimal amount of code
190using standard wxWidgets classes. The more advanced features are demonstrated
191if you create a shape frame from the main frame menu. A shape is a geometric
192object which has a position, size and color. It models some
193application-specific data in this sample. A shape object supports its own
194private \helpref{wxDataFormat}{wxdataformat} which means that you may cut and
195paste it or drag and drop (between one and the same or different shapes) from
196one sample instance to another (or the same). However, chances are that no
197other program supports this format and so shapes can also be rendered as
198bitmaps which allows them to be pasted/dropped in many other applications
199(and, under Windows, also as metafiles which are supported by most of Windows
200programs as well - try Write/Wordpad, for example).
201
202Take a look at DnDShapeDataObject class to see how you may use
203\helpref{wxDataObject}{wxdataobject} to achieve this.
204
205
206\subsection{Dynamic sample}\label{sampledynamic}
207
208This sample is a very small sample that demonstrates use of the
209\helpref{wxEvtHandler::Connect}{wxevthandlerconnect} method. This method
210should be used whenever it is not known at compile time which control
211will receive which event or which controls are actually going to be in
212a dialog or frame. This is most typically the case for any scripting
213language that would work as a wrapper for wxWidgets or programs where
214forms or similar datagrams can be created by the users.
215
216See also the \helpref{event sample}{sampleevent}
217
218
219\subsection{Event sample}\label{sampleevent}
220
221The event sample demonstrates various features of the wxWidgets events. It
222shows using dynamic events and connecting/disconnecting the event handlers
223during run time and also using
224\helpref{PushEventHandler()}{wxwindowpusheventhandler} and
225\helpref{PopEventHandler()}{wxwindowpopeventhandler}.
226
227It replaces the old dynamic sample.
228
229
230\subsection{Except(ions) sample}\label{sampleexcept}
231
232This very simple sample shows how to use C++ exceptions in wxWidgets programs,
233i.e. where to catch the exception which may be thrown by the program code. It
234doesn't do anything very exciting by itself, you need to study its code to
235understand what goes on.
236
237You need to build the library with \texttt{wxUSE\_EXCEPTIONS} being set to $1$
238and compile your code with C++ exceptions support to be able to build this
239sample.
240
241
242\subsection{Exec sample}\label{sampleexec}
243
244The exec sample demonstrates the \helpref{wxExecute}{wxexecute} and
245\helpref{wxShell}{wxshell} functions. Both of them are used to execute the
246external programs and the sample shows how to do this synchronously (waiting
247until the program terminates) or asynchronously (notification will come later).
248
249It also shows how to capture the output of the child process in both
250synchronous and asynchronous cases and how to kill the processes with
251\helpref{wxProcess::Kill}{wxprocesskill} and test for their existence with
252\helpref{wxProcess::Exists}{wxprocessexists}.
253
254
255\subsection{Font sample}\label{samplefont}
256
257The font sample demonstrates \helpref{wxFont}{wxfont},
258\helpref{wxFontEnumerator}{wxfontenumerator} and
259\helpref{wxFontMapper}{wxfontmapper} classes. It allows you to see the fonts
260available (to wxWidgets) on the computer and shows all characters of the
261chosen font as well.
262
263
264\subsection{Grid sample}\label{samplegrid}
265
266TODO.
267
268
269\subsection{HTML samples}\label{samplehtml}
270
271Eight HTML samples (you can find them in directory {\tt samples/html})
272cover all features of the HTML sub-library.
273
274{\bf Test} demonstrates how to create \helpref{wxHtmlWindow}{wxhtmlwindow}
275and also shows most supported HTML tags.
276
277{\bf Widget} shows how you can embed ordinary controls or windows within an
278HTML page. It also nicely explains how to write new tag handlers and extend
279the library to work with unsupported tags.
280
281{\bf About} may give you an idea how to write good-looking About boxes.
282
283{\bf Zip} demonstrates use of virtual file systems in wxHTML. The zip archives
284handler (ships with wxWidgets) allows you to access HTML pages stored
285in a compressed archive as if they were ordinary files.
286
287{\bf Virtual} is yet another virtual file systems demo. This one generates pages at run-time.
288You may find it useful if you need to display some reports in your application.
289
290{\bf Printing} explains use of \helpref{wxHtmlEasyPrinting}{wxhtmleasyprinting}
291class which serves as as-simple-as-possible interface for printing HTML
292documents without much work. In fact, only few function calls are sufficient.
293
294{\bf Help} and {\bf Helpview} are variations on displaying HTML help
295(compatible with MS HTML Help Workshop). {\it Help} shows how to embed
296\helpref{wxHtmlHelpController}{wxhtmlhelpcontroller} in your application
297while {\it Helpview} is a simple tool that only pops up the help window and
298displays help books given at command line.
299
300
301\subsection{Image sample}\label{sampleimage}
302
303The image sample demonstrates use of the \helpref{wxImage}{wximage} class
304and shows how to download images in a variety of formats, currently PNG, GIF,
305TIFF, JPEG, BMP, PNM and PCX. The top of the sample shows two rectangles, one
306of which is drawn directly in the window, the other one is drawn into a
307\helpref{wxBitmap}{wxbitmap}, converted to a wxImage, saved as a PNG image
308and then reloaded from the PNG file again so that conversions between wxImage
309and wxBitmap as well as loading and saving PNG files are tested.
310
311At the bottom of the main frame there is a test for using a monochrome bitmap by
312drawing into a \helpref{wxMemoryDC}{wxmemorydc}. The bitmap is then drawn
313specifying the foreground and background colours with
314\helpref{wxDC::SetTextForeground}{wxdcsettextforeground} and
315\helpref{wxDC::SetTextBackground}{wxdcsettextbackground} (on the left). The
316bitmap is then converted to a wxImage and the foreground colour (black) is
317replaced with red using \helpref{wxImage::Replace}{wximagereplace}.
318
319
320\subsection{Internat(ionalization) sample}\label{sampleinternat}
321
322The not very clearly named internat sample demonstrates the wxWidgets
323internationalization (i18n for short from now on) features. To be more
324precise, it only shows localization support, i.e. support for translating the
325program messages into another language while true i18n would also involve
326changing the other aspects of the programs behaviour.
327
328More information about this sample can be found in the {\tt readme.txt} file in
329its directory. Please see also \helpref{i18n overview}{internationalization}.
330
331
332\subsection{Layout sample}\label{samplelayout}
333
334The layout sample demonstrates the two different layout systems offered
335by wxWidgets. When starting the program, you will see a frame with some
336controls and some graphics. The controls will change their size whenever
337you resize the entire frame and the exact behaviour of the size changes
338is determined using the \helpref{wxLayoutConstraints}{wxlayoutconstraints}
339class. See also the \helpref{overview}{constraintsoverview} and the
340\helpref{wxIndividualLayoutConstraint}{wxindividuallayoutconstraint}
341class for further information.
342
343The menu in this sample offers two more tests, one showing how to use
344a \helpref{wxBoxSizer}{wxboxsizer} in a simple dialog and the other one
345showing how to use sizers in connection with a \helpref{wxNotebook}{wxnotebook}
346class. See also \helpref{wxSizer}{wxsizer}.
347
348
349\subsection{Listctrl sample}\label{samplelistctrl}
350
351This sample shows the \helpref{wxListCtrl}{wxlistctrl} control. Different modes
352supported by the control (list, icons, small icons, report) may be chosen from
353the menu.
354
355The sample also provides some timings for adding/deleting/sorting a lot of
356(several thousands) items into the control.
357
358
359\subsection{Mediaplayer sample}\label{samplemediaplayer}
360
361This sample demonstrates how to use all the features of
362\helpref{wxMediaCtrl}{wxmediactrl} and play various types of sound, video,
363and other files.
364
365
366It replaces the old dynamic sample.
367
368\subsection{Notebook sample}\label{samplenotebook}
369
370This samples shows \helpref{wxBookCtrl}{wxbookctrloverview} family of controls.
371Although initially it was written to demonstrate \helpref{wxNotebook}{wxnotebook}
372only, it can now be also used to see \helpref{wxListbook}{wxlistbook},
373\helpref{wxChoicebook}{wxchoicebook} and \helpref{wxTreebook}{wxtreebook} in action.
374Test each of the controls, their orientation, images and pages using commands through menu.
375
376
377
378\subsection{Render sample}\label{samplerender}
379
380This sample shows how to replace the default wxWidgets
381\helpref{renderer}{wxrenderernative} and also how to write a shared library
382(DLL) implementing a renderer and load and unload it during the run-time.
383
384
385
386\subsection{Rotate sample}\label{samplerotate}
387
388This is a simple example which demonstrates how to rotate an image with
389the \helpref{wxImage::Rotate}{wximagerotate} method. The rotation can
390be done without interpolation (left mouse button) which will be faster,
391or with interpolation (right mouse button) which is slower but gives
392better results.
393
394
395\subsection{Scroll subwindow sample}\label{samplescrollsub}
396
397This sample demonstrates use of the \helpref{wxScrolledWindow}{wxscrolledwindow}
398class including placing subwindows into it and drawing simple graphics. It uses the
399\helpref{SetTargetWindow}{wxscrolledwindowsettargetwindow} method and thus the effect
400of scrolling does not show in the scrolled window itself, but in one of its subwindows.
401
402Additionally, this samples demonstrates how to optimize drawing operations in wxWidgets,
403in particular using the \helpref{wxWindow::IsExposed}{wxwindowisexposed} method with
404the aim to prevent unnecessary drawing in the window and thus reducing or removing
405flicker on screen.
406
407
408\subsection{Sockets sample}\label{samplesockets}
409
410The sockets sample demonstrates how to use the communication facilities
411provided by \helpref{wxSocket}{wxsocketbase}. There are two different
412applications in this sample: a server, which is implemented using a
413\helpref{wxSocketServer}{wxsocketserver} object, and a client, which
414is implemented as a \helpref{wxSocketClient}{wxsocketclient}.
415
416The server binds to the local address, using TCP port number 3000,
417sets up an event handler to be notified of incoming connection requests
418({\bf wxSOCKET\_CONNECTION} events), and sits there, waiting for clients
419({\it listening}, in socket parlance). For each accepted connection,
420a new \helpref{wxSocketBase}{wxsocketbase} object is created. These
421socket objects are independent from the server that created them, so
422they set up their own event handler, and then request to be notified
423of {\bf wxSOCKET\_INPUT} (incoming data) or {\bf wxSOCKET\_LOST}
424(connection closed at the remote end) events. In the sample, the event
425handler is the same for all connections; to find out which socket the
426event is addressed to, the \helpref{GetSocket}{wxsocketeventgetsocket} function
427is used.
428
429Although it might take some time to get used to the event-oriented
430system upon which wxSocket is built, the benefits are many. See, for
431example, that the server application, while being single-threaded
432(and of course without using fork() or ugly select() loops) can handle
433an arbitrary number of connections.
434
435The client starts up unconnected, so you can use the Connect... option
436to specify the address of the server you are going to connect to (the
437TCP port number is hard-coded as 3000). Once connected, a number of
438tests are possible. Currently, three tests are implemented. They show
439how to use the basic IO calls in \helpref{wxSocketBase}{wxsocketbase},
440such as \helpref{Read}{wxsocketbaseread}, \helpref{Write}{wxsocketbasewrite},
441\helpref{ReadMsg}{wxsocketbasereadmsg} and \helpref{WriteMsg}{wxsocketbasewritemsg},
442and how to set up the correct IO flags depending on what you are going to
443do. See the comments in the code for more information. Note that because
444both clients and connection objects in the server set up an event handler
445to catch {\bf wxSOCKET\_LOST} events, each one is immediately notified
446if the other end closes the connection.
447
448There is also a URL test which shows how to use
449the \helpref{wxURL}{wxurl} class to fetch data from a given URL.
450
451The sockets sample is work in progress. Some things to do:
452
453\begin{itemize}\itemsep=0pt
454\item More tests for basic socket functionality.
455\item More tests for protocol classes (wxProtocol and its descendants).
456\item Tests for the recently added (and still in alpha stage) datagram sockets.
457\item New samples which actually do something useful (suggestions accepted).
458\end{itemize}
459
460
461\subsection{Sound sample}\label{samplesound}
462
463The {\tt sound} sample shows how to use \helpref{wxSound}{wxsound} for simple
464audio output (e.g. notifications).
465
466
467\subsection{Statbar sample}\label{samplestatbar}
468
469This sample shows how to create and use wxStatusBar. Although most of the
470samples have a statusbar, they usually only create a default one and only
471do it once.
472
473Here you can see how to recreate the statusbar (with possibly different number
474of fields) and how to use it to show icons/bitmaps and/or put arbitrary
475controls into it.
476
477
478\subsection{Text sample}\label{sampletext}
479
480This sample demonstrates four features: firstly the use and many variants of
481the \helpref{wxTextCtrl}{wxtextctrl} class (single line, multi line, read only,
482password, ignoring TAB, ignoring ENTER).
483
484Secondly it shows how to intercept a \helpref{wxKeyEvent}{wxkeyevent} in both
485the raw form using the {\tt EVT\_KEY\_UP} and {\tt EVT\_KEY\_DOWN} macros and the
486higher level from using the {\tt EVT\_CHAR} macro. All characters will be logged
487in a log window at the bottom of the main window. By pressing some of the function
488keys, you can test some actions in the text ctrl as well as get statistics on the
489text ctrls, which is useful for testing if these statistics actually are correct.
490
491Thirdly, on platforms which support it, the sample will offer to copy text to the
492\helpref{wxClipboard}{wxclipboard} and to paste text from it. The GTK version will
493use the so called PRIMARY SELECTION, which is the pseudo clipboard under X and
494best known from pasting text to the XTerm program.
495
496Last not least: some of the text controls have tooltips and the sample also shows
497how tooltips can be centrally disabled and their latency controlled.
498
499
500\subsection{Thread sample}\label{samplethread}
501
502This sample demonstrates use of threads in connection with GUI programs.
503There are two fundamentally different ways to use threads in GUI programs and
504either way has to take care of the fact that the GUI library itself usually
505is not multi-threading safe, i.e. that it might crash if two threads try to
506access the GUI class simultaneously. One way to prevent that is have a normal
507GUI program in the main thread and some worker threads which work in the
508background. In order to make communication between the main thread and the
509worker threads possible, wxWidgets offers the \helpref{wxPostEvent}{wxpostevent}
510function and this sample makes use of this function.
511
512The other way to use a so called Mutex (such as those offered in the \helpref{wxMutex}{wxmutex}
513class) that prevent threads from accessing the GUI classes as long as any other
514thread accesses them. For this, wxWidgets has the \helpref{wxMutexGuiEnter}{wxmutexguienter}
515and \helpref{wxMutexGuiLeave}{wxmutexguileave} functions, both of which are
516used and tested in the sample as well.
517
518See also \helpref{Multithreading overview}{wxthreadoverview} and \helpref{wxThread}{wxthread}.
519
520
521\subsection{Toolbar sample}\label{sampletoolbar}
522
523The toolbar sample shows the \helpref{wxToolBar}{wxtoolbar} class in action.
524
525The following things are demonstrated:
526
527\begin{itemize}\itemsep=0pt
528\item Creating the toolbar using \helpref{wxToolBar::AddTool}{wxtoolbaraddtool}
529and \helpref{wxToolBar::AddControl}{wxtoolbaraddcontrol}: see
530MyApp::InitToolbar in the sample.
531\item Using {\tt EVT\_UPDATE\_UI} handler for automatically enabling/disabling
532toolbar buttons without having to explicitly call EnableTool. This is done
533in MyFrame::OnUpdateCopyAndCut.
534\item Using \helpref{wxToolBar::DeleteTool}{wxtoolbardeletetool} and
535\helpref{wxToolBar::InsertTool}{wxtoolbarinserttool} to dynamically update the
536toolbar.
537\end{itemize}
538
539Some buttons in the main toolbar are check buttons, i.e. they stay checked when
540pressed. On the platforms which support it, the sample also adds a combobox
541to the toolbar showing how you can use arbitrary controls and not only buttons
542in it.
543
544If you toggle another toolbar in the sample (using {\tt Ctrl-A}) you will also
545see the radio toolbar buttons in action: the first three buttons form a radio
546group, i.e. checking any of them automatically unchecks the previously
547checked one.
548
549
550\subsection{Treectrl sample}\label{sampletreectrl}
551
552This sample demonstrates using the \helpref{wxTreeCtrl}{wxtreectrl} class. Here
553you may see how to process various notification messages sent by this control
554and also when they occur (by looking at the messages in the text control in
555the bottom part of the frame).
556
557Adding, inserting and deleting items and branches from the tree as well as
558sorting (in default alphabetical order as well as in custom one) is
559demonstrated here as well - try the corresponding menu entries.
560
561
562\subsection{Wizard sample}\label{samplewizard}
563
564This sample shows the so-called wizard dialog (implemented using
565\helpref{wxWizard}{wxwizard} and related classes). It shows almost all
566features supported:
567
568\begin{itemize}\itemsep=0pt
569\item Using bitmaps with the wizard and changing them depending on the page
570shown (notice that wxValidationPage in the sample has a different image from
571the other ones)
572\item Using \helpref{TransferDataFromWindow}{wxwindowtransferdatafromwindow}
573to verify that the data entered is correct before passing to the next page
574(done in wxValidationPage which forces the user to check a checkbox before
575continuing).
576\item Using more elaborated techniques to allow returning to the previous
577page, but not continuing to the next one or vice versa (in wxRadioboxPage)
578\item This (wxRadioboxPage) page also shows how the page may process the {\tt
579Cancel} button itself instead of relying on the wizard parent to do it.
580\item Normally, the order of the pages in the wizard is known at compile-time,
581but sometimes it depends on the user choices: wxCheckboxPage shows how to
582dynamically decide which page to display next (see also
583\helpref{wxWizardPage}{wxwizardpage})
584\end{itemize}
585