Added wxMessageOutput as per the discussion on wx-dev.

Added wxApp::DoInit to initialize the global wxMessageOutput instance.
Changed wxCommandLineParser to use wxMessageOutput.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16267 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/msgout.cpp

@@ -0,0 +1,123 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        common/msgout.cpp
+// Purpose:     wxMessageOutput implementation
+// Author:      Mattia Barbon
+// Modified by:
+// Created:     17.07.02
+// RCS-ID:      $Id$
+// Copyright:   (c) the wxWindows team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ---------------------------------------------------------------------------
+// headers
+// ---------------------------------------------------------------------------
+
+#ifdef __GNUG__
+    #pragma implementation "msgout.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if defined(__BORLANDC__)
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+    #include "wx/string.h"
+    #include "wx/ffile.h"
+    #include "wx/app.h"
+    #if wxUSE_GUI
+        #include "wx/msgdlg.h"
+    #endif // wxUSE_GUI
+#endif
+
+#include "wx/msgout.h"
+
+#include <stdarg.h>
+#include <stdio.h>
+
+// ===========================================================================
+// implementation
+// ===========================================================================
+
+wxMessageOutput* wxMessageOutput::ms_msgOut = 0;
+
+wxMessageOutput* wxMessageOutput::Get()
+{
+    return ms_msgOut;
+}
+
+wxMessageOutput* wxMessageOutput::Set(wxMessageOutput* msgout)
+{
+    wxMessageOutput* old = ms_msgOut;
+    ms_msgOut = msgout;
+    return old;
+}
+
+// ----------------------------------------------------------------------------
+// wxMessageOutputStderr
+// ----------------------------------------------------------------------------
+
+void wxMessageOutputStderr::Printf(const wxChar* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    wxString out;
+
+    out.PrintfV(format, args);
+    va_end(args);
+
+    fprintf(stderr, "%s", out.mb_str());
+}
+
+// ----------------------------------------------------------------------------
+// wxMessageOutputMessageBox
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+
+void wxMessageOutputMessageBox::Printf(const wxChar* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    wxString out;
+
+    out.PrintfV(format, args);
+    va_end(args);
+
+#ifndef __WXMSW__
+    out.Replace("\t","        ");
+#endif
+    ::wxMessageBox(out);
+}
+
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// wxMessageOutputLog
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI && defined(__WXMOTIF__)
+
+void wxMessageOutputLog::Printf(const wxChar* format, ...)
+{
+    va_list args;
+    va_start(args, format);
+    wxString out;
+
+    out.PrintfV(format, args);
+    va_end(args);
+
+    out.Replace("\t","        ");
+    // under Motif, wxMessageDialog needs a parent window, so we use
+    // wxLog, which is better than nothing
+    ::wxLogMessage("%s", out.c_str());
+}
+
+#endif // wxUSE_GUI