samples/xrc/xrcdemo.cpp

   1 //-----------------------------------------------------------------------------
   2 // Name:        xrcdemo.cpp
   3 // Purpose:     XML resources sample: Main application file
   4 // Author:      Robert O'Connor (rob@medicalmnemonics.com), Vaclav Slavik
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) Robert O'Connor and Vaclav Slavik
   7 // Licence:     wxWindows licence
   8 //-----------------------------------------------------------------------------
   9
  10 //-----------------------------------------------------------------------------
  11 // Standard wxWidgets headers
  12 //-----------------------------------------------------------------------------
  13
  14 // For compilers that support precompilation, includes "wx/wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #ifdef __BORLANDC__
  18     #pragma hdrstop
  19 #endif
  20
  21 // For all others, include the necessary headers (this file is usually all you
  22 // need because it includes almost all "standard" wxWidgets headers)
  23 #ifndef WX_PRECOMP
  24     #include "wx/wx.h"
  25 #endif
  26
  27 //-----------------------------------------------------------------------------
  28 // Header of this .cpp file
  29 //-----------------------------------------------------------------------------
  30
  31 #include "xrcdemo.h"
  32
  33 //-----------------------------------------------------------------------------
  34 // Remaining headers: Needed wx headers, then wx/contrib headers, then app one
  35 //-----------------------------------------------------------------------------
  36
  37 #include "wx/image.h"               // wxImage
  38
  39 #include "wx/xrc/xmlres.h"          // XRC XML resources
  40
  41 #include "wx/cshelp.h"              // wxSimpleHelpProvider for helptext
  42
  43 #include "myframe.h"
  44
  45 //-----------------------------------------------------------------------------
  46 // wxWidgets macro: Declare the application.
  47 //-----------------------------------------------------------------------------
  48
  49 // Create a new application object: this macro will allow wxWidgets to create
  50 // the application object during program execution (it's better than using a
  51 // static object for many reasons) and also declares the accessor function
  52 // wxGetApp() which will return the reference of the right type (i.e. the_app and
  53 // not wxApp).
  54 IMPLEMENT_APP(MyApp)
  55
  56 //-----------------------------------------------------------------------------
  57 // Public methods
  58 //-----------------------------------------------------------------------------
  59
  60 // 'Main program' equivalent: the program execution "starts" here
  61 bool MyApp::OnInit()
  62 {
  63     if ( !wxApp::OnInit() )
  64         return false;
  65
  66     // If there is any of a certain format of image in the xrcs, then first
  67     // load a handler for that image type. This example uses XPMs & a gif, but
  68     // if you want PNGs, then add a PNG handler, etc. See wxImage::AddHandler()
  69     // documentation for the types of image handlers available.
  70     wxImage::AddHandler(new wxXPMHandler);
  71     wxImage::AddHandler(new wxGIFHandler);
  72
  73     // Initialize all the XRC handlers. Always required (unless you feel like
  74     // going through and initializing a handler of each control type you will
  75     // be using (ie initialize the spinctrl handler, initialize the textctrl
  76     // handler). However, if you are only using a few control types, it will
  77     // save some space to only initialize the ones you will be using. See
  78     // wxXRC docs for details.
  79     wxXmlResource::Get()->InitAllHandlers();
  80
  81     // Load all of the XRC files that will be used. You can put everything
  82     // into one giant XRC file if you wanted, but then they become more
  83     // diffcult to manage, and harder to reuse in later projects.
  84     if ( !wxXmlResource::Get()->LoadAllFiles("rc") )
  85         return false;
  86
  87 #if wxUSE_HELP
  88     // Use the simple help provider to show the context-sensitive help
  89     wxHelpProvider::Set( new wxSimpleHelpProvider );
  90 #endif // wxUSE_HELP
  91
  92     // Make an instance of your derived frame. Passing NULL (the default value
  93     // of MyFrame's constructor is NULL) as the frame doesn't have a parent
  94     // since it is the main application window.
  95     MyFrame *frame = new MyFrame();
  96
  97     // Show the frame as it's created initially hidden.
  98     frame->Show(true);
  99
 100     // Return true to tell program to continue (false would terminate).
 101     return true;
 102 }
 103