- Can start without relational_gui and correctly report an error

git-svn-id: http://galileo.dmi.unict.it/svn/relational/trunk@306 014f5005-505e-4b48-8d0a-63407b615a7c

relational.1

@@ -1,4 +1,4 @@
-.TH "Relational" "1" 
+.TH "Relational" "1.1" 
 .SH "NAME" 
 relational \(em Python implementation of Relational algebra. 
 .SH "SYNOPSIS" 

relational_gui.py

@@ -81,14 +81,13 @@ if __name__ == "__main__":
             x11=False
     
     if x11:
-        import sip
-        from PyQt4 import QtCore, QtGui
-        
         try:
             from relational_gui import maingui,guihandler, about, surveyForm
         except:
             print >> sys.stderr, "Module relational_gui is missing.\nPlease install relational package."
             sys.exit(3)
+        
+        from PyQt4 import QtGui
             
         about.version=version
         surveyForm.version=version
@@ -100,7 +99,6 @@ if __name__ == "__main__":
     
         #if os.name=='nt':
         Form.setFont(QtGui.QFont("Dejavu Sans Bold"))
-    
         
         ui.setupUi(Form)