#include "wx/utils.h"
#include "wx/msgdlg.h"
#include "wx/icon.h"
+
+ #include "wx/thread.h"
#endif
// ----------------------------------------------------------------------------
// program startup
virtual bool OnInit();
- // 2nd-level exception handling: we get all the exceptions occuring in any
+ // 2nd-level exception handling: we get all the exceptions occurring in any
// event handler here
virtual bool OnExceptionInMainLoop();
// and now for something different: this function is called in case of a
// crash (e.g. dereferencing null pointer, division by 0, ...)
virtual void OnFatalException();
+
+ // you can override this function to do something different (e.g. log the
+ // assert to file) whenever an assertion fails
+ virtual void OnAssertFailure(const wxChar *file,
+ int line,
+ const wxChar *func,
+ const wxChar *cond,
+ const wxChar *msg);
};
// Define a new frame type: this is going to be our main frame
void OnHandleCrash(wxCommandEvent& event);
#endif
+protected:
+
// 1st-level exception handling: we overload ProcessEvent() to be able to
// catch exceptions which occur in MyFrame methods here
virtual bool ProcessEvent(wxEvent& event);
+ // provoke assert in main or worker thread
+ //
+ // this is used to show how an assert failure message box looks like
+ void OnShowAssert(wxCommandEvent& event);
+#if wxUSE_THREADS
+ void OnShowAssertInThread(wxCommandEvent& event);
+#endif // wxUSE_THREADS
+
private:
// any class wishing to process wxWidgets events must use this macro
DECLARE_EVENT_TABLE()
Except_Crash,
#if wxUSE_ON_FATAL_EXCEPTION
Except_HandleCrash,
-#endif
+#endif // wxUSE_ON_FATAL_EXCEPTION
+ Except_ShowAssert,
+#if wxUSE_THREADS
+ Except_ShowAssertInThread,
+#endif // wxUSE_THREADS
Except_Dialog,
Except_Quit = wxID_EXIT,
EVT_MENU(Except_Crash, MyFrame::OnCrash)
#if wxUSE_ON_FATAL_EXCEPTION
EVT_MENU(Except_HandleCrash, MyFrame::OnHandleCrash)
-#endif
+#endif // wxUSE_ON_FATAL_EXCEPTION
+ EVT_MENU(Except_ShowAssert, MyFrame::OnShowAssert)
+#if wxUSE_THREADS
+ EVT_MENU(Except_ShowAssertInThread, MyFrame::OnShowAssertInThread)
+#endif // wxUSE_THREADS
END_EVENT_TABLE()
BEGIN_EVENT_TABLE(MyDialog, wxDialog)
// 'Main program' equivalent: the program execution "starts" here
bool MyApp::OnInit()
{
+ if ( !wxApp::OnInit() )
+ return false;
+
// create the main application window
MyFrame *frame = new MyFrame();
}
catch ( int i )
{
- wxLogWarning(_T("Caught an int %d in MyApp."), i);
+ wxLogWarning(wxT("Caught an int %d in MyApp."), i);
}
catch ( MyException& e )
{
- wxLogWarning(_T("Caught MyException(%s) in MyApp."), e.what());
+ wxLogWarning(wxT("Caught MyException(%s) in MyApp."), e.what());
}
catch ( ... )
{
}
catch ( ... )
{
- wxMessageBox(_T("Unhandled exception caught, program will terminate."),
- _T("wxExcept Sample"), wxOK | wxICON_ERROR);
+ wxMessageBox(wxT("Unhandled exception caught, program will terminate."),
+ wxT("wxExcept Sample"), wxOK | wxICON_ERROR);
}
}
void MyApp::OnFatalException()
{
- wxMessageBox(_T("Program has crashed and will terminate."),
- _T("wxExcept Sample"), wxOK | wxICON_ERROR);
+ wxMessageBox(wxT("Program has crashed and will terminate."),
+ wxT("wxExcept Sample"), wxOK | wxICON_ERROR);
+}
+
+void MyApp::OnAssertFailure(const wxChar *file,
+ int line,
+ const wxChar *func,
+ const wxChar *cond,
+ const wxChar *msg)
+{
+ // take care to not show the message box from a worker thread, this doesn't
+ // work as it doesn't have any event loop
+ if ( !wxIsMainThread() ||
+ wxMessageBox
+ (
+ wxString::Format("An assert failed in %s().", func) +
+ "\n"
+ "Do you want to call the default assert handler?",
+ "wxExcept Sample",
+ wxYES_NO | wxICON_QUESTION
+ ) == wxYES )
+ {
+ wxApp::OnAssertFailure(file, line, func, cond, msg);
+ }
}
// ============================================================================
// frame constructor
MyFrame::MyFrame()
- : wxFrame(NULL, wxID_ANY, _T("Except wxWidgets App"),
+ : wxFrame(NULL, wxID_ANY, wxT("Except wxWidgets App"),
wxPoint(50, 50), wxSize(450, 340))
{
// set the frame icon
#if wxUSE_MENUS
// create a menu bar
wxMenu *menuFile = new wxMenu;
- menuFile->Append(Except_Dialog, _T("Show &dialog\tCtrl-D"));
+ menuFile->Append(Except_Dialog, wxT("Show &dialog\tCtrl-D"));
menuFile->AppendSeparator();
- menuFile->Append(Except_ThrowInt, _T("Throw an &int\tCtrl-I"));
- menuFile->Append(Except_ThrowString, _T("Throw a &string\tCtrl-S"));
- menuFile->Append(Except_ThrowObject, _T("Throw an &object\tCtrl-O"));
+ menuFile->Append(Except_ThrowInt, wxT("Throw an &int\tCtrl-I"));
+ menuFile->Append(Except_ThrowString, wxT("Throw a &string\tCtrl-S"));
+ menuFile->Append(Except_ThrowObject, wxT("Throw an &object\tCtrl-O"));
menuFile->Append(Except_ThrowUnhandled,
- _T("Throw &unhandled exception\tCtrl-U"));
- menuFile->Append(Except_Crash, _T("&Crash\tCtrl-C"));
+ wxT("Throw &unhandled exception\tCtrl-U"));
+ menuFile->Append(Except_Crash, wxT("&Crash\tCtrl-C"));
menuFile->AppendSeparator();
#if wxUSE_ON_FATAL_EXCEPTION
- menuFile->AppendCheckItem(Except_HandleCrash, _T("&Handle crashes\tCtrl-H"));
+ menuFile->AppendCheckItem(Except_HandleCrash, wxT("&Handle crashes\tCtrl-H"));
menuFile->AppendSeparator();
-#endif
- menuFile->Append(Except_Quit, _T("E&xit\tCtrl-Q"), _T("Quit this program"));
+#endif // wxUSE_ON_FATAL_EXCEPTION
+ menuFile->Append(Except_ShowAssert, wxT("Provoke &assert failure\tCtrl-A"));
+#if wxUSE_THREADS
+ menuFile->Append(Except_ShowAssertInThread,
+ wxT("Assert failure in &thread\tShift-Ctrl-A"));
+#endif // wxUSE_THREADS
+ menuFile->AppendSeparator();
+ menuFile->Append(Except_Quit, wxT("E&xit\tCtrl-Q"), wxT("Quit this program"));
wxMenu *helpMenu = new wxMenu;
- helpMenu->Append(Except_About, _T("&About...\tF1"), _T("Show about dialog"));
+ helpMenu->Append(Except_About, wxT("&About...\tF1"), wxT("Show about dialog"));
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar();
- menuBar->Append(menuFile, _T("&File"));
- menuBar->Append(helpMenu, _T("&Help"));
+ menuBar->Append(menuFile, wxT("&File"));
+ menuBar->Append(helpMenu, wxT("&Help"));
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#if wxUSE_STATUSBAR && !defined(__WXWINCE__)
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar(2);
- SetStatusText(_T("Welcome to wxWidgets!"));
+ SetStatusText(wxT("Welcome to wxWidgets!"));
#endif // wxUSE_STATUSBAR
}
}
catch ( const wxChar *msg )
{
- wxLogMessage(_T("Caught a string \"%s\" in MyFrame"), msg);
+ wxLogMessage(wxT("Caught a string \"%s\" in MyFrame"), msg);
return true;
}
}
catch ( ... )
{
- wxLogWarning(_T("An exception in MyDialog"));
+ wxLogWarning(wxT("An exception in MyDialog"));
Destroy();
throw;
void MyFrame::OnThrowString(wxCommandEvent& WXUNUSED(event))
{
- throw _T("string thrown from MyFrame");
+ throw wxT("string thrown from MyFrame");
}
void MyFrame::OnThrowObject(wxCommandEvent& WXUNUSED(event))
{
- throw MyException(_T("Exception thrown from MyFrame"));
+ throw MyException(wxT("Exception thrown from MyFrame"));
}
void MyFrame::OnThrowUnhandled(wxCommandEvent& WXUNUSED(event))
wxHandleFatalExceptions(event.IsChecked());
}
-#endif
+#endif // wxUSE_ON_FATAL_EXCEPTION
+
+void MyFrame::OnShowAssert(wxCommandEvent& WXUNUSED(event))
+{
+ // provoke an assert from wxArrayString
+ wxArrayString arr;
+ arr[0];
+}
+
+#if wxUSE_THREADS
+
+void MyFrame::OnShowAssertInThread(wxCommandEvent& WXUNUSED(event))
+{
+ class AssertThread : public wxThread
+ {
+ public:
+ AssertThread()
+ : wxThread(wxTHREAD_JOINABLE)
+ {
+ }
+
+ protected:
+ virtual void *Entry()
+ {
+ wxFAIL_MSG("Test assert in another thread.");
+
+ return 0;
+ }
+ };
+
+ AssertThread thread;
+ thread.Create();
+ thread.Run();
+ thread.Wait();
+}
+
+#endif // wxUSE_THREADS
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxString msg;
- msg.Printf( _T("This is the About dialog of the except sample.\n")
- _T("Welcome to %s"), wxVERSION_STRING);
+ msg.Printf( wxT("This is the About dialog of the except sample.\n")
+ wxT("Welcome to %s"), wxVERSION_STRING);
- wxMessageBox(msg, _T("About Except"), wxOK | wxICON_INFORMATION, this);
+ wxMessageBox(msg, wxT("About Except"), wxOK | wxICON_INFORMATION, this);
}
// ============================================================================
// ============================================================================
MyDialog::MyDialog(wxFrame *parent)
- : wxDialog(parent, wxID_ANY, wxString(_T("Throw exception dialog")))
+ : wxDialog(parent, wxID_ANY, wxString(wxT("Throw exception dialog")))
{
wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
- sizerTop->Add(new wxButton(this, Except_ThrowInt, _T("Throw &int")),
+ sizerTop->Add(new wxButton(this, Except_ThrowInt, wxT("Throw &int")),
0, wxCENTRE | wxALL, 5);
- sizerTop->Add(new wxButton(this, Except_ThrowObject, _T("Throw &object")),
+ sizerTop->Add(new wxButton(this, Except_ThrowObject, wxT("Throw &object")),
0, wxCENTRE | wxALL, 5);
- sizerTop->Add(new wxButton(this, Except_Crash, _T("&Crash")),
+ sizerTop->Add(new wxButton(this, Except_Crash, wxT("&Crash")),
0, wxCENTRE | wxALL, 5);
- sizerTop->Add(new wxButton(this, wxID_CANCEL, _T("&Cancel")),
+ sizerTop->Add(new wxButton(this, wxID_CANCEL, wxT("&Cancel")),
0, wxCENTRE | wxALL, 5);
- SetSizer(sizerTop);
- sizerTop->Fit(this);
+ SetSizerAndFit(sizerTop);
}
void MyDialog::OnThrowInt(wxCommandEvent& WXUNUSED(event))
void MyDialog::OnThrowObject(wxCommandEvent& WXUNUSED(event))
{
- throw MyException(_T("Exception thrown from MyDialog"));
+ throw MyException(wxT("Exception thrown from MyDialog"));
}
void MyDialog::OnCrash(wxCommandEvent& WXUNUSED(event))
projects / wxWidgets.git / blobdiff