1 files changed, 105 insertions, 0 deletions
diff --git a/doc/codesnippets/doc/src/snippets/code/src_gui_widgets_qvalidator.cpp b/doc/codesnippets/doc/src/snippets/code/src_gui_widgets_qvalidator.cpp
new file mode 100644
index 000000000..71e2fe146
--- /dev/null
+++ b/doc/codesnippets/doc/src/snippets/code/src_gui_widgets_qvalidator.cpp
@@ -0,0 +1,105 @@
+//! [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]