samples/memcheck/memcheck.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        memcheck.cpp
   3 // Purpose:     Memory-checking sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #ifndef WX_PRECOMP
  20 #include "wx/wx.h"
  21 #endif
  22
  23 #include "wx/datetime.h"
  24
  25 #ifndef wxHAS_IMAGES_IN_RESOURCES
  26     #include "../sample.xpm"
  27 #endif
  28
  29 #ifndef __WXDEBUG__
  30 #error This program must be compiled in debug mode.
  31 #endif
  32
  33 // Normally, new is automatically defined to be the
  34 // debugging version. If not, this does it.
  35 #if !defined(new) && defined(WXDEBUG_NEW) && wxUSE_MEMORY_TRACING && wxUSE_GLOBAL_MEMORY_OPERATORS
  36 #define new WXDEBUG_NEW
  37 #endif
  38
  39 // Define a new application type
  40 class MyApp: public wxApp
  41 { public:
  42     bool OnInit(void);
  43 };
  44
  45 // Define a new frame type
  46 class MyFrame: public wxFrame
  47 { public:
  48     MyFrame(wxFrame *parent);
  49     void OnQuit(wxCommandEvent& event);
  50
  51 DECLARE_EVENT_TABLE()
  52 };
  53
  54 IMPLEMENT_APP(MyApp)
  55
  56 // `Main program' equivalent, creating windows and returning main app frame
  57 bool MyApp::OnInit(void)
  58 {
  59   if ( !wxApp::OnInit() )
  60       return false;
  61
  62   // Create the main frame window
  63   MyFrame *frame = new MyFrame((wxFrame *) NULL);
  64
  65   // Give it an icon
  66   frame->SetIcon(wxICON(sample));
  67
  68   // Make a menubar
  69   wxMenu *file_menu = new wxMenu;
  70
  71   file_menu->Append(wxID_EXIT, wxT("E&xit"));
  72   wxMenuBar *menu_bar = new wxMenuBar;
  73   menu_bar->Append(file_menu, wxT("File"));
  74   frame->SetMenuBar(menu_bar);
  75
  76   // Make a panel with a message
  77   wxPanel *panel = new wxPanel(frame);
  78
  79   (void)new wxStaticText(panel, wxID_ANY, wxT("Hello, this is a minimal debugging wxWidgets program!"), wxPoint(10, 10));
  80
  81   // Show the frame
  82   frame->Show(true);
  83
  84 #if wxUSE_MEMORY_TRACING
  85   wxDebugContext::SetCheckpoint();
  86 #endif
  87
  88   // object allocation
  89   wxBrush* brush = new wxBrush(*wxRED_BRUSH);
  90   wxBitmap* bitmap = new wxBitmap(100, 100);
  91
  92   // non-object allocation
  93   char *ordinaryNonObject = new char[1000];
  94
  95   wxString *thing = new wxString;
  96
  97 #if wxUSE_DATETIME
  98   wxDateTime* date = new wxDateTime;
  99 #endif // wxUSE_DATETIME
 100
 101   const char *data = (const char*) thing ;
 102
 103 #if wxUSE_MEMORY_TRACING
 104   // On MSW, Dump() crashes if using wxLogGui,
 105   // so use wxLogStderr instead.
 106   wxLog* oldLog = wxLog::SetActiveTarget(new wxLogStderr);
 107
 108   wxDebugContext::PrintClasses();
 109   wxDebugContext::Dump();
 110   wxDebugContext::PrintStatistics();
 111
 112   // Set back to wxLogGui
 113   delete wxLog::SetActiveTarget(oldLog);
 114 #endif
 115
 116   // Don't delete these objects, to force wxApp to flag a memory leak.
 117 //  delete thing;
 118 //  delete date;
 119 //  delete[] ordinaryNonObject;
 120
 121   return true;
 122 }
 123
 124 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 125     EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
 126 END_EVENT_TABLE()
 127
 128 // My frame constructor
 129 MyFrame::MyFrame(wxFrame *parent):
 130   wxFrame(parent, wxID_ANY, wxT("MemCheck wxWidgets Sample"), wxDefaultPosition, wxSize(400, 200))
 131 {}
 132
 133 // Intercept menu commands
 134 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 135 {
 136     Close(true);
 137 }
 138