1 | /*
|
---|
2 | Namespace DelegateTest
|
---|
3 |
|
---|
4 | Delegate Sub Callback1()
|
---|
5 | Delegate Function Callback2() As Long
|
---|
6 | Delegate Sub Callback3( a As Long )
|
---|
7 | Delegate Sub Callback4( a As String )
|
---|
8 | Delegate Function Callback7( str As String ) As String
|
---|
9 |
|
---|
10 |
|
---|
11 | Class TestClass
|
---|
12 | proc1Flag As Boolean
|
---|
13 | proc2Flag As Boolean
|
---|
14 | proc3Flag As Boolean
|
---|
15 | proc4Flag As Boolean
|
---|
16 | proc5Flag As Boolean
|
---|
17 | proc6Flag As Boolean
|
---|
18 | proc8Flag As Boolean
|
---|
19 |
|
---|
20 | Static staticProc1Flag = False As Boolean
|
---|
21 |
|
---|
22 | Public
|
---|
23 | Sub TestClass()
|
---|
24 | ClearFlags()
|
---|
25 | End Sub
|
---|
26 |
|
---|
27 | Sub ClearFlags()
|
---|
28 | proc1Flag = False
|
---|
29 | proc2Flag = False
|
---|
30 | proc3Flag = False
|
---|
31 | proc4Flag = False
|
---|
32 | proc5Flag = False
|
---|
33 | proc6Flag = False
|
---|
34 | proc8Flag = True
|
---|
35 | End Sub
|
---|
36 | Function CheckFlags() As Boolean
|
---|
37 | Return proc1Flag and proc2Flag and proc3Flag and proc4Flag and proc5Flag and proc6Flag and proc8Flag
|
---|
38 | End Function
|
---|
39 |
|
---|
40 | Sub Proc1()
|
---|
41 | proc1Flag = True
|
---|
42 | End Sub
|
---|
43 |
|
---|
44 | Function Proc2() As Long
|
---|
45 | proc2Flag = True
|
---|
46 | End Function
|
---|
47 |
|
---|
48 | Sub Proc3or4( a As Long )
|
---|
49 | proc3Flag = (a=100)
|
---|
50 | End Sub
|
---|
51 |
|
---|
52 | Sub Proc3or4( a As String )
|
---|
53 | proc4Flag = (a="Proc4 calling")
|
---|
54 | End Sub
|
---|
55 |
|
---|
56 | Sub Proc5( a As String )
|
---|
57 | proc5Flag = (a="Proc4 calling")
|
---|
58 | End Sub
|
---|
59 |
|
---|
60 | Sub Proc6( a As String )
|
---|
61 | proc6Flag = (a="Proc4 calling")
|
---|
62 | End Sub
|
---|
63 |
|
---|
64 | Static Function Proc7( str As String ) As String
|
---|
65 | Return "Proc7 result[" + str + "]"
|
---|
66 | End Function
|
---|
67 |
|
---|
68 | Sub Proc8( a As String )
|
---|
69 | proc8Flag = False
|
---|
70 | End Sub
|
---|
71 | End Class
|
---|
72 |
|
---|
73 | Sub TestMain()
|
---|
74 | Dim testObj As TestClass
|
---|
75 | Dim dg1 = New Callback1( AddressOf(testObj.Proc1) )
|
---|
76 | Dim dg2 = New Callback2( AddressOf(testObj.Proc2) )
|
---|
77 | Dim dg3 = New Callback3( AddressOf(testObj.Proc3or4) )
|
---|
78 | Dim dg4 = New Callback4( AddressOf(testObj.Proc3or4) )
|
---|
79 | dg4 += AddressOf(testObj.Proc5)
|
---|
80 | dg4 += AddressOf(testObj.Proc6)
|
---|
81 | dg4 += AddressOf(testObj.Proc8)
|
---|
82 | dg4 -= AddressOf(testObj.Proc8)
|
---|
83 |
|
---|
84 | dg1()
|
---|
85 | dg2()
|
---|
86 | dg3( 100 )
|
---|
87 | dg4( "Proc4 calling" )
|
---|
88 |
|
---|
89 | UnitTest( "Delegate1", testObj.CheckFlags() )
|
---|
90 |
|
---|
91 | Dim dg7 = New Callback7( AddressOf(TestClass.Proc7) )
|
---|
92 | UnitTest( "Delegate2", dg7( "test value" ) = "Proc7 result[test value]" )
|
---|
93 |
|
---|
94 | End Sub
|
---|
95 |
|
---|
96 | End Namespace
|
---|
97 |
|
---|
98 | DelegateTest.TestMain()
|
---|
99 | */
|
---|