--- a/src/main.cpp	Fri Oct 21 07:58:23 2011 +0900
+++ b/src/main.cpp	Sun Oct 23 07:43:34 2011 +0900
@@ -1,5 +1,5 @@
 // Filename   : main.cpp
-// Last Change: 18-Oct-2011.
+// Last Change: 22-Oct-2011.
 //
 
 #include "common.h"
@@ -26,6 +26,7 @@
     wxImage::AddHandler( new wxPNGHandler );
 
     ConfInit();
+    InitLog();
 
     wxString progname = wxT("A Mover");
     wxString verstr = wxString::Format( wxT(" - v%d.%d ( build %d )"), VER, REV, BLD );
@@ -86,3 +87,23 @@
     config->Read( wxT("zmax"), &zmax );
 }
 
+void MyApp::InitLog()
+{
+    wxDateTime now = wxDateTime::Now();
+    wxTextFile logfile;
+    logfile.Open(wxT("log"));
+    logfile.Clear();
+    logfile.AddLine( now.Format(wxT("%F %T ")) + wxT("[Application start...]") );
+    logfile.Write();
+    logfile.Close();
+}
+void MyApp::WriteLog( wxString msg )
+{
+    wxDateTime now = wxDateTime::Now();
+    wxTextFile logfile;
+    logfile.Open(wxT("log"));
+    logfile.AddLine( now.Format(wxT("%F %T ")) + msg );
+    logfile.Write();
+    logfile.Close();
+}
+