--- old/cnijfilter-source-3.30-1/cngpijmon/src/bjcupsmon_ui.c	
+++ old/cnijfilter-source-3.30-1/cngpijmon/src/bjcupsmon_ui.c	
@@ -35,6 +35,7 @@ 
 PRIVATE GladeXML       *gXmlMainWnd = NULL;            // Pointer to glade xml of main window.
 #else
 PRIVATE GtkWidget      *gMainWnd = NULL;                       // Pointer to main window. ver.2.50
+GtkWidget* create_mainWindow (void);
 #endif
 
 PRIVATE const gchar    *gSTSMessageTable[] = {