4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
134 lines
3.1 KiB
C++
134 lines
3.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: memcheck.cpp
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// Purpose: Memory-checking sample
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// Author: Julian Smart
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// Modified by:
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// Created: 04/01/98
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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#include "wx/datetime.h"
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#ifndef wxHAS_IMAGES_IN_RESOURCES
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#include "../sample.xpm"
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#endif
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#ifndef __WXDEBUG__
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#error This program must be compiled in debug mode.
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#endif
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// Normally, new is automatically defined to be the
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// debugging version. If not, this does it.
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#if !defined(new) && defined(WXDEBUG_NEW) && wxUSE_MEMORY_TRACING && wxUSE_GLOBAL_MEMORY_OPERATORS
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#define new WXDEBUG_NEW
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#endif
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// Define a new application type
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class MyApp: public wxApp
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{ public:
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bool OnInit(void) override;
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};
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// Define a new frame type
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class MyFrame: public wxFrame
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{ public:
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MyFrame(wxFrame *parent);
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void OnQuit(wxCommandEvent& event);
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wxDECLARE_EVENT_TABLE();
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};
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wxIMPLEMENT_APP(MyApp);
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// `Main program' equivalent, creating windows and returning main app frame
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bool MyApp::OnInit(void)
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{
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if ( !wxApp::OnInit() )
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return false;
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// Create the main frame window
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MyFrame *frame = new MyFrame(nullptr);
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// Give it an icon
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frame->SetIcon(wxICON(sample));
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// Make a menubar
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wxMenu *file_menu = new wxMenu;
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file_menu->Append(wxID_EXIT, "E&xit");
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wxMenuBar *menu_bar = new wxMenuBar;
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menu_bar->Append(file_menu, "File");
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frame->SetMenuBar(menu_bar);
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// Make a panel with a message
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wxPanel *panel = new wxPanel(frame);
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(void)new wxStaticText(panel, wxID_ANY, "Hello, this is a minimal debugging wxWidgets program!", wxPoint(10, 10));
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// Show the frame
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frame->Show(true);
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#if wxUSE_MEMORY_TRACING
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wxDebugContext::SetCheckpoint();
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#endif
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// object allocation
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wxBrush* brush = new wxBrush(*wxRED_BRUSH);
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wxBitmap* bitmap = new wxBitmap(100, 100);
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// non-object allocation
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char *ordinaryNonObject = new char[1000];
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wxString *thing = new wxString;
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#if wxUSE_DATETIME
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wxDateTime* date = new wxDateTime;
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#endif // wxUSE_DATETIME
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const char *data = (const char*) thing ;
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#if wxUSE_MEMORY_TRACING
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// On MSW, Dump() crashes if using wxLogGui,
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// so use wxLogStderr instead.
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wxLog* oldLog = wxLog::SetActiveTarget(new wxLogStderr);
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wxDebugContext::PrintClasses();
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wxDebugContext::Dump();
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wxDebugContext::PrintStatistics();
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// Set back to wxLogGui
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delete wxLog::SetActiveTarget(oldLog);
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#endif
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// Don't delete these objects, to force wxApp to flag a memory leak.
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// delete thing;
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// delete date;
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// delete[] ordinaryNonObject;
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return true;
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}
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wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
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wxEND_EVENT_TABLE()
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// My frame constructor
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MyFrame::MyFrame(wxFrame *parent):
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wxFrame(parent, wxID_ANY, "MemCheck wxWidgets Sample", wxDefaultPosition, wxSize(400, 200))
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{}
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// Intercept menu commands
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void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
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{
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Close(true);
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}
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