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Signed-off-by: Peter Siegmund <mars3142@noreply.mars3142.dev>
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Peter Siegmund
2025-10-31 23:37:30 +01:00
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libs/wxWidgets-3.3.1/samples/help/demo.cpp Normal file
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/////////////////////////////////////////////////////////////////////////////
// Name: demo.cpp
// Purpose: wxHelpController demo
// Author: Karsten Ballueder
// Created: 04/01/98
// Copyright: (c) Karsten Ballueder, Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
// for all others, include the necessary headers (this file is usually all you
// need because it includes almost all "standard" wxWidgets headers
#ifndef WX_PRECOMP
# include "wx/wx.h"
#endif
# include "wx/image.h"
# include "wx/help.h"
# include "wx/cshelp.h"
#if wxUSE_TOOLTIPS
# include "wx/tooltip.h"
#endif
// define this to 1 to use HTML help even under Windows (by default, Windows
// version will use WinHelp).
// Please also see samples/html/helpview.
#define USE_HTML_HELP 1
// define this to 1 to use external help controller (not used by default)
#define USE_EXT_HELP 0
// Define this to 0 to use the help controller as the help
// provider, or to 1 to use the 'simple help provider'
// (the one implemented with wxTipWindow).
#define USE_SIMPLE_HELP_PROVIDER 0
#if !wxUSE_HTML
#undef USE_HTML_HELP
#define USE_HTML_HELP 0
#endif
#if USE_HTML_HELP
#include "wx/filesys.h"
#include "wx/fs_zip.h"
#include "wx/html/helpctrl.h"
#endif
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
#include "wx/msw/helpchm.h"
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
#include "wx/msw/helpbest.h"
#endif
#if USE_EXT_HELP
#include "wx/generic/helpext.h"
#endif
// ----------------------------------------------------------------------------
// resources
// ----------------------------------------------------------------------------
// the application icon
#ifndef wxHAS_IMAGES_IN_RESOURCES
#include "../sample.xpm"
#endif
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// Define a new application type, each program should derive a class from wxApp
class MyApp : public wxApp
{
public:
// override base class virtuals
// ----------------------------
// this one is called on application startup and is a good place for the app
// initialization (doing it here and not in the ctor allows to have an error
// return: if OnInit() returns false, the application terminates)
virtual bool OnInit() override;
// do some clean up here
virtual int OnExit() override;
};
// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
public:
// ctor(s)
MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size);
wxHelpControllerBase& GetHelpController() { return m_help; }
#if USE_HTML_HELP
wxHtmlHelpController& GetAdvancedHtmlHelpController() { return m_advancedHtmlHelp; }
#endif
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
wxCHMHelpController& GetMSHtmlHelpController() { return m_msHtmlHelp; }
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
wxBestHelpController& GetBestHelpController() { return m_bestHelp; }
#endif
// event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
void OnHelp(wxCommandEvent& event);
void OnAdvancedHtmlHelp(wxCommandEvent& event);
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
void OnMSHtmlHelp(wxCommandEvent& event);
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
void OnBestHelp(wxCommandEvent& event);
#endif
#if USE_HTML_HELP
void OnModalHtmlHelp(wxCommandEvent& event);
#endif
void OnShowContextHelp(wxCommandEvent& event);
void OnShowDialogContextHelp(wxCommandEvent& event);
void ShowHelp(int commandId, wxHelpControllerBase& helpController);
private:
#if USE_EXT_HELP
wxExtHelpController m_help;
#else
wxHelpController m_help;
#endif
#if USE_HTML_HELP
wxHtmlHelpController m_advancedHtmlHelp;
wxHtmlHelpController m_embeddedHtmlHelp;
wxHtmlHelpWindow* m_embeddedHelpWindow;
#endif
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
wxCHMHelpController m_msHtmlHelp;
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
wxBestHelpController m_bestHelp;
#endif
// any class wishing to process wxWidgets events must use this macro
wxDECLARE_EVENT_TABLE();
};
// A custom modal dialog
class MyModalDialog : public wxDialog
{
public:
MyModalDialog(wxWindow *parent);
private:
wxDECLARE_EVENT_TABLE();
};
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// IDs for the controls and the menu commands
enum
{
// menu items
HelpDemo_Quit = 100,
HelpDemo_Help_Index,
HelpDemo_Help_Classes,
HelpDemo_Help_Functions,
HelpDemo_Help_Help,
HelpDemo_Help_Search,
HelpDemo_Help_ContextHelp,
HelpDemo_Help_DialogContextHelp,
HelpDemo_Html_Help_Index,
HelpDemo_Html_Help_Classes,
HelpDemo_Html_Help_Functions,
HelpDemo_Html_Help_Help,
HelpDemo_Html_Help_Search,
HelpDemo_Advanced_Html_Help_Index,
HelpDemo_Advanced_Html_Help_Classes,
HelpDemo_Advanced_Html_Help_Functions,
HelpDemo_Advanced_Html_Help_Help,
HelpDemo_Advanced_Html_Help_Search,
HelpDemo_Advanced_Html_Help_Modal,
HelpDemo_MS_Html_Help_Index,
HelpDemo_MS_Html_Help_Classes,
HelpDemo_MS_Html_Help_Functions,
HelpDemo_MS_Html_Help_Help,
HelpDemo_MS_Html_Help_Search,
HelpDemo_Best_Help_Index,
HelpDemo_Best_Help_Classes,
HelpDemo_Best_Help_Functions,
HelpDemo_Best_Help_Help,
HelpDemo_Best_Help_Search,
HelpDemo_Help_KDE,
HelpDemo_Help_GNOME,
HelpDemo_Help_Netscape,
// controls start here (the numbers are, of course, arbitrary)
HelpDemo_Text = 1000
};
// ----------------------------------------------------------------------------
// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------
// the event tables connect the wxWidgets events with the functions (event
// handlers) which process them. It can be also done at run-time, but for the
// simple menu events like this the static method is much simpler.
wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(HelpDemo_Quit, MyFrame::OnQuit)
EVT_MENU(HelpDemo_Help_Index, MyFrame::OnHelp)
EVT_MENU(HelpDemo_Help_Classes, MyFrame::OnHelp)
EVT_MENU(HelpDemo_Help_Functions, MyFrame::OnHelp)
EVT_MENU(HelpDemo_Help_Help, MyFrame::OnHelp)
EVT_MENU(HelpDemo_Help_Search, MyFrame::OnHelp)
EVT_MENU(HelpDemo_Help_ContextHelp, MyFrame::OnShowContextHelp)
EVT_MENU(HelpDemo_Help_DialogContextHelp, MyFrame::OnShowDialogContextHelp)
EVT_MENU(HelpDemo_Advanced_Html_Help_Index, MyFrame::OnAdvancedHtmlHelp)
EVT_MENU(HelpDemo_Advanced_Html_Help_Classes, MyFrame::OnAdvancedHtmlHelp)
EVT_MENU(HelpDemo_Advanced_Html_Help_Functions, MyFrame::OnAdvancedHtmlHelp)
EVT_MENU(HelpDemo_Advanced_Html_Help_Help, MyFrame::OnAdvancedHtmlHelp)
EVT_MENU(HelpDemo_Advanced_Html_Help_Search, MyFrame::OnAdvancedHtmlHelp)
#if USE_HTML_HELP
EVT_MENU(HelpDemo_Advanced_Html_Help_Modal, MyFrame::OnModalHtmlHelp)
#endif
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
EVT_MENU(HelpDemo_MS_Html_Help_Index, MyFrame::OnMSHtmlHelp)
EVT_MENU(HelpDemo_MS_Html_Help_Classes, MyFrame::OnMSHtmlHelp)
EVT_MENU(HelpDemo_MS_Html_Help_Functions, MyFrame::OnMSHtmlHelp)
EVT_MENU(HelpDemo_MS_Html_Help_Help, MyFrame::OnMSHtmlHelp)
EVT_MENU(HelpDemo_MS_Html_Help_Search, MyFrame::OnMSHtmlHelp)
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
EVT_MENU(HelpDemo_Best_Help_Index, MyFrame::OnBestHelp)
#endif
EVT_MENU(HelpDemo_Help_KDE, MyFrame::OnHelp)
EVT_MENU(HelpDemo_Help_GNOME, MyFrame::OnHelp)
EVT_MENU(HelpDemo_Help_Netscape, MyFrame::OnHelp)
wxEND_EVENT_TABLE()
// Create a new application object: this macro will allow wxWidgets to create
// the application object during program execution (it's better than using a
// static object for many reasons) and also declares the accessor function
// wxGetApp() which will return the reference of the right type (i.e. MyApp and
// not wxApp)
wxIMPLEMENT_APP(MyApp);
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// the application class
// ----------------------------------------------------------------------------
// `Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
if ( !wxApp::OnInit() )
return false;
// Create a simple help provider to make SetHelpText() do something.
// Note that this must be set before any SetHelpText() calls are made.
#if USE_SIMPLE_HELP_PROVIDER
wxSimpleHelpProvider* provider = new wxSimpleHelpProvider;
#else
wxHelpControllerHelpProvider* provider = new wxHelpControllerHelpProvider;
#endif
wxHelpProvider::Set(provider);
#if USE_HTML_HELP
#if wxUSE_GIF
// Required for images in the online documentation
wxImage::AddHandler(new wxGIFHandler);
#endif // wxUSE_GIF
// Required for advanced HTML help
#if wxUSE_STREAMS && wxUSE_ZIPSTREAM && wxUSE_ZLIB
wxFileSystem::AddHandler(new wxZipFSHandler);
#endif
#endif // wxUSE_HTML
// Create the main application window
MyFrame *frame = new MyFrame("HelpDemo wxWidgets App",
wxPoint(50, 50), wxSize(450, 340));
#if !USE_SIMPLE_HELP_PROVIDER
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
provider->SetHelpController(& frame->GetMSHtmlHelpController());
#else
provider->SetHelpController(& frame->GetHelpController());
#endif
#endif // !USE_SIMPLE_HELP_PROVIDER
frame->Show(true);
// initialise the help system: this means that we'll use doc.hlp file under
// Windows and that the HTML docs are in the subdirectory doc for platforms
// using HTML help
if ( !frame->GetHelpController().Initialize("doc") )
{
wxLogError("Cannot initialize the help system, aborting.");
return false;
}
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
if( !frame->GetMSHtmlHelpController().Initialize("doc") )
{
wxLogError("Cannot initialize the MS HTML Help system.");
}
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
// you need to call Initialize in order to use wxBestHelpController
if( !frame->GetBestHelpController().Initialize("doc") )
{
wxLogError("Cannot initialize the best help system, aborting.");
}
#endif
#if USE_HTML_HELP
// initialise the advanced HTML help system: this means that the HTML docs are in .htb
// (zipped) form
if ( !frame->GetAdvancedHtmlHelpController().Initialize("doc") )
{
wxLogError("Cannot initialize the advanced HTML help system, aborting.");
return false;
}
#endif
#if 0
// defined(__WXMSW__) && wxUSE_MS_HTML_HELP
wxString path(wxGetCwd());
if ( !frame->GetMSHtmlHelpController().Initialize(path + "\\doc.chm") )
{
wxLogError("Cannot initialize the MS HTML help system, aborting.");
return false;
}
#endif
return true;
}
int MyApp::OnExit()
{
// clean up
delete wxHelpProvider::Set(nullptr);
return 0;
}
// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame(nullptr, 300, title, pos, size)
#if USE_HTML_HELP
, m_embeddedHtmlHelp(wxHF_EMBEDDED|wxHF_DEFAULT_STYLE)
#endif
{
// set the frame icon
SetIcon(wxICON(sample));
// create a menu bar
wxMenu *menuFile = new wxMenu;
menuFile->Append(HelpDemo_Help_Index, "&Help Index...");
menuFile->Append(HelpDemo_Help_Classes, "&Help on Classes...");
menuFile->Append(HelpDemo_Help_Functions, "&Help on Functions...");
menuFile->Append(HelpDemo_Help_ContextHelp, "&Context Help...");
menuFile->Append(HelpDemo_Help_DialogContextHelp, "&Dialog Context Help...\tCtrl-H");
menuFile->Append(HelpDemo_Help_Help, "&About Help Demo...");
menuFile->Append(HelpDemo_Help_Search, "&Search help...");
#if USE_HTML_HELP
menuFile->AppendSeparator();
menuFile->Append(HelpDemo_Advanced_Html_Help_Index, "Advanced HTML &Help Index...");
menuFile->Append(HelpDemo_Advanced_Html_Help_Classes, "Advanced HTML &Help on Classes...");
menuFile->Append(HelpDemo_Advanced_Html_Help_Functions, "Advanced HTML &Help on Functions...");
menuFile->Append(HelpDemo_Advanced_Html_Help_Help, "Advanced HTML &About Help Demo...");
menuFile->Append(HelpDemo_Advanced_Html_Help_Search, "Advanced HTML &Search help...");
menuFile->Append(HelpDemo_Advanced_Html_Help_Modal, "Advanced HTML Help &Modal Dialog...");
#endif
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
menuFile->AppendSeparator();
menuFile->Append(HelpDemo_MS_Html_Help_Index, "MS HTML &Help Index...");
menuFile->Append(HelpDemo_MS_Html_Help_Classes, "MS HTML &Help on Classes...");
menuFile->Append(HelpDemo_MS_Html_Help_Functions, "MS HTML &Help on Functions...");
menuFile->Append(HelpDemo_MS_Html_Help_Help, "MS HTML &About Help Demo...");
menuFile->Append(HelpDemo_MS_Html_Help_Search, "MS HTML &Search help...");
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
menuFile->AppendSeparator();
menuFile->Append(HelpDemo_Best_Help_Index, "Best &Help Index...");
#endif
#ifndef __WXMSW__
#if !wxUSE_HTML
menuFile->AppendSeparator();
menuFile->Append(HelpDemo_Help_KDE, "Use &KDE");
menuFile->Append(HelpDemo_Help_GNOME, "Use &GNOME");
menuFile->Append(HelpDemo_Help_Netscape, "Use &Netscape");
#endif
#endif
menuFile->AppendSeparator();
menuFile->Append(HelpDemo_Quit, "E&xit");
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(menuFile, "&File");
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar();
SetStatusText("Welcome to wxWidgets!");
#endif // wxUSE_STATUSBAR
#if USE_HTML_HELP
// Create embedded HTML Help window
m_embeddedHelpWindow = new wxHtmlHelpWindow;
// m_embeddedHtmlHelp.UseConfig(config, rootPath); // Can set your own config object here
m_embeddedHtmlHelp.SetHelpWindow(m_embeddedHelpWindow);
m_embeddedHelpWindow->Create(this,
wxID_ANY, wxDefaultPosition, GetClientSize(), wxTAB_TRAVERSAL|wxNO_BORDER, wxHF_DEFAULT_STYLE);
m_embeddedHtmlHelp.AddBook(wxFileName("doc.zip"));
m_embeddedHtmlHelp.Display("Introduction");
#else
// now create some controls
// a panel first - if there were several controls, it would allow us to
// navigate between them from the keyboard
wxPanel *panel = new wxPanel(this, 301, wxPoint(0, 0), wxSize(400, 200));
panel->SetHelpText(_("This panel just holds a static text control."));
//panel->SetHelpText(wxContextId(300));
// and a static control whose parent is the panel
wxStaticText* staticText = new wxStaticText(panel, 302, "Hello, world!", wxPoint(10, 10));
staticText->SetHelpText(_("This static text control isn't doing a lot right now."));
#endif
}
// event handlers
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
void MyFrame::OnHelp(wxCommandEvent& event)
{
ShowHelp(event.GetId(), m_help);
}
void MyFrame::OnShowContextHelp(wxCommandEvent& WXUNUSED(event))
{
// This starts context help mode, then the user
// clicks on a window to send a help message
wxContextHelp contextHelp(this);
}
void MyFrame::OnShowDialogContextHelp(wxCommandEvent& WXUNUSED(event))
{
MyModalDialog dialog(this);
dialog.ShowModal();
}
void MyFrame::OnAdvancedHtmlHelp(wxCommandEvent& event)
{
#if USE_HTML_HELP
ShowHelp(event.GetId(), m_advancedHtmlHelp);
#endif
}
#if wxUSE_MS_HTML_HELP && !defined(__WXUNIVERSAL__)
void MyFrame::OnMSHtmlHelp(wxCommandEvent& event)
{
ShowHelp(event.GetId(), m_msHtmlHelp);
}
#endif
#if wxUSE_MS_HTML_HELP && wxUSE_WXHTML_HELP && !defined(__WXUNIVERSAL__)
void MyFrame::OnBestHelp(wxCommandEvent& event)
{
ShowHelp(event.GetId(), m_bestHelp);
}
#endif
#if USE_HTML_HELP
void MyFrame::OnModalHtmlHelp(wxCommandEvent& WXUNUSED(event))
{
wxHtmlModalHelp(this, "doc.zip", "Introduction");
}
#endif
/*
Notes: ShowHelp uses section ids for displaying particular topics,
but you might want to use a unique keyword to display a topic, instead.
Section ids are specified as follows for the different formats.
WinHelp
The [MAP] section specifies the topic to integer id mapping, e.g.
[MAP]
#define intro 100
#define functions 1
#define classes 2
#define about 3
The identifier name corresponds to the label used for that topic.
You could also put these in a .h file and #include it in both the MAP
section and your C++ source.
Note that Tex2RTF doesn't currently generate the MAP section automatically.
MS HTML Help
The [MAP] section specifies the HTML filename root to integer id mapping, e.g.
[MAP]
#define doc1 100
#define doc3 1
#define doc2 2
#define doc4 3
The identifier name corresponds to the HTML filename used for that topic.
You could also put these in a .h file and #include it in both the MAP
section and your C++ source.
Note that Tex2RTF doesn't currently generate the MAP section automatically.
Simple wxHTML Help and External HTML Help
A wxhelp.map file is used, for example:
0 wx.htm ; wxWidgets: Help index; additional keywords like overview
1 wx204.htm ; wxWidgets Function Reference
2 wx34.htm ; wxWidgets Class Reference
Note that Tex2RTF doesn't currently generate the MAP section automatically.
Advanced HTML Help
An extension to the .hhc file format is used, specifying a new parameter
with name="ID":
<OBJECT type="text/sitemap">
<param name="Local" value="doc2.htm#classes">
<param name="Name" value="Classes">
<param name="ID" value=2>
</OBJECT>
Again, this is not generated automatically by Tex2RTF, though it could
be added quite easily.
Unfortunately adding the ID parameters appears to interfere with MS HTML Help,
so you should not try to compile a .chm file from a .hhc file with
this extension, or the contents will be messed up.
*/
void MyFrame::ShowHelp(int commandId, wxHelpControllerBase& helpController)
{
switch(commandId)
{
case HelpDemo_Help_Classes:
case HelpDemo_Html_Help_Classes:
case HelpDemo_Advanced_Html_Help_Classes:
case HelpDemo_MS_Html_Help_Classes:
case HelpDemo_Best_Help_Classes:
helpController.DisplaySection(2);
//helpController.DisplaySection("Classes"); // An alternative form for most controllers
break;
case HelpDemo_Help_Functions:
case HelpDemo_Html_Help_Functions:
case HelpDemo_Advanced_Html_Help_Functions:
case HelpDemo_MS_Html_Help_Functions:
helpController.DisplaySection(1);
//helpController.DisplaySection("Functions"); // An alternative form for most controllers
break;
case HelpDemo_Help_Help:
case HelpDemo_Html_Help_Help:
case HelpDemo_Advanced_Html_Help_Help:
case HelpDemo_MS_Html_Help_Help:
case HelpDemo_Best_Help_Help:
helpController.DisplaySection(3);
//helpController.DisplaySection("About"); // An alternative form for most controllers
break;
case HelpDemo_Help_Search:
case HelpDemo_Html_Help_Search:
case HelpDemo_Advanced_Html_Help_Search:
case HelpDemo_MS_Html_Help_Search:
case HelpDemo_Best_Help_Search:
{
wxString key = wxGetTextFromUser("Search for?",
"Search help for keyword",
wxEmptyString,
this);
if(! key.IsEmpty())
helpController.KeywordSearch(key);
}
break;
case HelpDemo_Help_Index:
case HelpDemo_Html_Help_Index:
case HelpDemo_Advanced_Html_Help_Index:
case HelpDemo_MS_Html_Help_Index:
case HelpDemo_Best_Help_Index:
helpController.DisplayContents();
break;
// These three calls are only used by wxExtHelpController
case HelpDemo_Help_KDE:
helpController.SetViewer("kdehelp");
break;
case HelpDemo_Help_GNOME:
helpController.SetViewer("gnome-help-browser");
break;
case HelpDemo_Help_Netscape:
helpController.SetViewer("netscape", wxHELP_NETSCAPE);
break;
}
}
// ----------------------------------------------------------------------------
// MyModalDialog
// Demonstrates context-sensitive help
// ----------------------------------------------------------------------------
wxBEGIN_EVENT_TABLE(MyModalDialog, wxDialog)
wxEND_EVENT_TABLE()
MyModalDialog::MyModalDialog(wxWindow *parent)
: wxDialog(parent, wxID_ANY, wxString("Modal dialog"))
{
// Add the context-sensitive help button on the caption for the platforms
// which support it (currently MSW only)
SetExtraStyle(wxDIALOG_EX_CONTEXTHELP);
wxBoxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
wxBoxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL);
wxButton* btnOK = new wxButton(this, wxID_OK, "&OK");
btnOK->SetHelpText(_("The OK button confirms the dialog choices."));
wxButton* btnCancel = new wxButton(this, wxID_CANCEL, "&Cancel");
btnCancel->SetHelpText(_("The Cancel button cancels the dialog."));
sizerRow->Add(btnOK, 0, wxALIGN_CENTER | wxALL, 5);
sizerRow->Add(btnCancel, 0, wxALIGN_CENTER | wxALL, 5);
// Add explicit context-sensitive help button for non-MSW
#ifndef __WXMSW__
sizerRow->Add(new wxContextHelpButton(this), 0, wxALIGN_CENTER | wxALL, 5);
#endif
wxTextCtrl *text = new wxTextCtrl(this, wxID_ANY, "A demo text control",
wxDefaultPosition, wxSize(300, 100),
wxTE_MULTILINE);
text->SetHelpText(_("Type text here if you have got nothing more interesting to do"));
sizerTop->Add(text, 0, wxEXPAND|wxALL, 5 );
sizerTop->Add(sizerRow, 0, wxALIGN_RIGHT|wxALL, 5 );
SetSizerAndFit(sizerTop);
btnOK->SetFocus();
btnOK->SetDefault();
}