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