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 license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #pragma interface
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21 #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25 #include "wx/wx.h"
  26 #endif
  27
  28 #include "wx/datetime.h"
  29
  30 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__)
  31 #include "mondrian.xpm"
  32 #endif
  33
  34 #ifndef __WXDEBUG__
  35 #error This program must be compiled in debug mode.
  36 #endif
  37
  38 // Normally, new is automatically defined to be the
  39 // debugging version. If not, this does it.
  40 #if !defined(new) && defined(WXDEBUG_NEW) && wxUSE_MEMORY_TRACING && wxUSE_GLOBAL_MEMORY_OPERATORS
  41 #define new WXDEBUG_NEW
  42 #endif
  43
  44 // Define a new application type
  45 class MyApp: public wxApp
  46 { public:
  47     bool OnInit(void);
  48 };
  49
  50 // Define a new frame type
  51 class MyFrame: public wxFrame
  52 { public:
  53     MyFrame(wxFrame *parent);
  54     void OnQuit(wxCommandEvent& event);
  55
  56 DECLARE_EVENT_TABLE()
  57 };
  58
  59 IMPLEMENT_APP(MyApp)
  60
  61 // `Main program' equivalent, creating windows and returning main app frame
  62 bool MyApp::OnInit(void)
  63 {
  64   // Create the main frame window
  65   MyFrame *frame = new MyFrame((wxFrame *) NULL);
  66
  67   // Give it an icon
  68   frame->SetIcon(wxICON(mondrian));
  69
  70   // Make a menubar
  71   wxMenu *file_menu = new wxMenu;
  72
  73   file_menu->Append(wxID_EXIT, _T("E&xit"));
  74   wxMenuBar *menu_bar = new wxMenuBar;
  75   menu_bar->Append(file_menu, _T("File"));
  76   frame->SetMenuBar(menu_bar);
  77
  78   // Make a panel with a message
  79   wxPanel *panel = new wxPanel(frame);
  80
  81   (void)new wxStaticText(panel, wxID_ANY, _T("Hello, this is a minimal debugging wxWidgets program!"), wxPoint(10, 10));
  82
  83   // Show the frame
  84   frame->Show(true);
  85
  86 #if wxUSE_MEMORY_TRACING
  87   wxDebugContext::SetCheckpoint();
  88 #endif
  89
  90   // object allocation
  91   wxBrush* brush = new wxBrush(*wxRED);
  92   wxBitmap* bitmap = new wxBitmap(100, 100);
  93
  94   // non-object allocation
  95   char *ordinaryNonObject = new char[1000];
  96
  97   wxString *thing = new wxString;
  98
  99 #if wxUSE_DATETIME
 100   wxDateTime* date = new wxDateTime;
 101 #endif // wxUSE_DATETIME
 102
 103   const char *data = (const char*) thing ;
 104
 105 #if wxUSE_MEMORY_TRACING
 106   // On MSW, Dump() crashes if using wxLogGui,
 107   // so use wxLogStderr instead.
 108   wxLog* oldLog = wxLog::SetActiveTarget(new wxLogStderr);
 109
 110   wxDebugContext::PrintClasses();
 111   wxDebugContext::Dump();
 112   wxDebugContext::PrintStatistics();
 113
 114   // Set back to wxLogGui
 115   delete wxLog::SetActiveTarget(oldLog);
 116 #endif
 117
 118   // Don't delete these objects, to force wxApp to flag a memory leak.
 119 //  delete thing;
 120 //  delete date;
 121 //  delete[] ordinaryNonObject;
 122
 123   return true;
 124 }
 125
 126 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 127     EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
 128 END_EVENT_TABLE()
 129
 130 // My frame constructor
 131 MyFrame::MyFrame(wxFrame *parent):
 132   wxFrame(parent, wxID_ANY, _T("MemCheck wxWidgets Sample"), wxDefaultPosition, wxSize(400, 200))
 133 {}
 134
 135 // Intercept menu commands
 136 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 137 {
 138     Close(true);
 139 }
 140