Softwareentwicklung in C++ - ASC

42 }
43
44 /∗ Copy constructor
45 ∗/
46 Event ( const Event & s r c )
47 {
48 event type = s r c . event type ;
49 }
50
51 /∗ Destructor
52 ∗ Just to make sure that a v i r t u a l d e s t r u c t o r e x i s t s
53 ∗/
54 virtual ˜ Event ( ) { }
55
10.2 Das DDD 293
56 /∗ Returns the type of the event
57 ∗ @return The type of the event as given in the constructor
58 ∗/
59 int32 getType ( ) const
60 {
61 return ( event type ) ;
62 }
63 } ;
64
65
66 #endif // s i m p l e e v e n t h
10.2.19 WordEvent
Der hier vorgestellte WordEvent stellt eine Spezialisierung des allgemeinen
Events von zuvor dar. Er wird dazu verwendet, den erhaltenen User Input
Wort für Wort an die Applikation weiterzureichen:
1 // simple word event . h − a word event c l a s s
2
3 #ifndef simple word event h
4 #define simple word event h
5
6 #include < c s t r i n g>
7
8 //−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
9 /∗ A c l a s s f o r a s p e c i f i c word event . I s used f o r words that
10 ∗ are input by u sers and have to be passed on .
11 ∗/
12
13 class WordEvent : public Event
14 {
15 protected :
16
17 /∗ The word that a r r i v e d as a user input and has to be
18 ∗ passed on . This i s a copy and has to be deleted in
19 ∗ the d e s t r u c t o r . Also a 0 pointer i s p o s s i b l e .
20 ∗/
21 char ∗ word ;
22
23 public :
24
25 /∗ Standard constructor
26 ∗ c o p i e s the word that i s passed on to i t
27 ∗/
28 explicit WordEvent( const char ∗ word ) :
29 Event (WORDEVENT) ,