1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
//! [0]
validator = QIntValidator(100, 999, self)
edit = QLineEdit(self)
# the edit lineedit will only accept integers between 100 and 999
edit.setValidator(validator)
//! [0]
//! [1]
pos = 0
v = QIntValidator(100, 900, self)
str = "1"
v.validate(str, pos) # returns Intermediate
str = "012"
v.validate(str, pos) # returns Intermediate
str = "123"
v.validate(str, pos) # returns Acceptable
str = "678"
v.validate(str, pos) # returns Acceptable
str = "999"
v.validate(str, pos) # returns Intermediate
str = "1234"
v.validate(str, pos) # returns Invalid
str = "-123"
v.validate(str, pos) # returns Invalid
str = "abc"
v.validate(str, pos) # returns Invalid
str = "12cm"
v.validate(str, pos) # returns Invalid
//! [1]
//! [2]
pos = 0
s = "abc"
v.validate(s, pos) # returns Invalid
s = "5"
v.validate(s, pos) # returns Intermediate
s = "50"
v.validate(s, pos) # returns Acceptable
//! [2]
//! [3]
# regexp: optional '-' followed by between 1 and 3 digits
rx = QRegExp("-?\\d{1,3}")
validator = QRegExpValidator(rx, self)
edit = QLineEdit(self)
edit.setValidator(validator)
//! [3]
//! [4]
# integers 1 to 9999
rx = QRegExp("[1-9]\\d{0,3}")
# the validator treats the regexp as "^[1-9]\\d{0,3}$"
v = QRegExpValidator(rx, 0)
pos = 0
s = "0"
v.validate(s, pos) # returns Invalid
s = "12345"
v.validate(s, pos) # returns Invalid
s = "1"
v.validate(s, pos) # returns Acceptable
rx.setPattern("\\S+") # one or more non-whitespace characters
v.setRegExp(rx)
s = "myfile.txt"
v.validate(s, pos) # Returns Acceptable
s = "my file.txt"
v.validate(s, pos) # Returns Invalid
# A, B or C followed by exactly five digits followed by W, X, Y or Z
rx.setPattern("[A-C]\\d{5}[W-Z]")
v.setRegExp(rx)
s = "a12345Z"
v.validate(s, pos) # Returns Invalid
s = "A12345Z"
v.validate(s, pos) # Returns Acceptable
s = "B12"
v.validate(s, pos) # Returns Intermediate
# match most 'readme' files
rx.setPattern("read\\S?me(\.(txt|asc|1st))?")
rx.setCaseSensitive(false)
v.setRegExp(rx)
s = "readme"
v.validate(s, pos) # Returns Acceptable
s = "README.1ST"
v.validate(s, pos) # Returns Acceptable
s = "read me.txt"
v.validate(s, pos) # Returns Invalid
s = "readm"
v.validate(s, pos) # Returns Intermediate
//! [4]
|
