Difference between Class Module and Standard Module?
Standard module:
-This place for variable declarations,procedures etc.& it can accessed these procedures in wherever in the project.
-Available only for the defining modules where they are used.
Class module:
-We can use of it whenever an object reference of the particular class is defined for number of applications
-Unlike standard module,members of class like object's properties,events can be accessed only whenever an instance of class is created.