IgorBeforeQuitHook: Make it work

The signature of IgorBeforeQuitHook was wrong and therefore the function
got never called by Igor Pro.

Additionally we want to suppress save dialogs if this is possible in a
safe way.

Author: t-b

procedures/CodeBrowser_hooks.ipf

@@ -6,10 +6,31 @@
 // This file was created by () byte physics Thomas Braun, support@byte-physics.de
 // (c) 2013
 
-static Function IgorBeforeQuitHook(igorApplicationNameStr)
-	string igorApplicationNameStr
+static Function IgorBeforeQuitHook(unsavedExp, unsavedNotebooks, unsavedProcedures)
+	variable unsavedExp, unsavedNotebooks, unsavedProcedures
+
+	string expName
 
 	preparePanelClose()
+
+	if(unsavedExp || unsavedNotebooks || unsavedProcedures)
+		return 0
+	endif
+
+	expName = IgorInfo(1)
+
+	if(!cmpstr(expName, "Untitled"))
+		return 0
+	endif
+
+	// experiment saved and pxp still exists -> silently save it
+	// does not support unpacked experiments
+	GetFileFolderInfo/P=home/Q/Z expName + ".pxp"
+	if(!V_Flag)
+		SaveExperiment
+		return 1
+	endif
+
 	return 0
 End