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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