initial creation

py3interm/EXAMPLES/qt5/qt_validators.py

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+#!/usr/bin/env python
+
+import sys
+
+from PyQt5.QtWidgets import QMainWindow, QApplication
+from PyQt5.QtGui import QRegExpValidator, QIntValidator
+from PyQt5.QtGui import QDoubleValidator
+from PyQt5.QtCore import QRegExp
+
+from ui_validators import Ui_Validators
+
+class ValidatorsMain(QMainWindow):
+    def __init__(self):
+        QMainWindow.__init__(self)
+
+        # Set up the user interface from Designer.
+        self.ui = Ui_Validators()
+
+        self.ui.setupUi(self)
+        self._set_validators()
+
+        self.ui.bt_save.clicked.connect(self._save_pushed)
+
+    def _set_validators(self):
+        # Set up the validators (could be in separate function or module)
+        reg_ex = QRegExp(r"[A-Za-z0-9]{1,10}") # <1>
+        val_alphanum = QRegExpValidator(reg_ex, self.ui.le_alphanum)  # <2>
+        self.ui.le_alphanum.setValidator(val_alphanum) # <3>
+
+        reg_ex = QRegExp(r"[a-z ]{0,30}") # <1>
+        val_lcspace = QRegExpValidator(reg_ex, self.ui.le_lcspace)  # <2>
+        self.ui.le_lcspace.setValidator(val_lcspace) # <3>
+
+        val_nums_1_100 = QIntValidator(1, 100, self.ui.le_nums_1_100)  # <4>
+        self.ui.le_nums_1_100.setValidator(val_nums_1_100)  # <5>
+
+        val_float = QDoubleValidator(0.0, 20.0, 2, self.ui.le_float)  # <6>
+        self.ui.le_float.setValidator(val_float)  # <7>
+
+    def _save_pushed(self):
+        alphanum = self.ui.le_alphanum.text()
+        lcspace = self.ui.le_lcspace.text()
+        nums = self.ui.le_nums_1_100.text()
+        fl = self.ui.le_float.text()
+        msg = '{}/{}/{}/{}'.format(alphanum, lcspace, nums, fl)
+        self.ui.statusbar.showMessage(msg, 0) # <8>
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    main = ValidatorsMain()
+    main.show()
+    sys.exit(app.exec_())
+
+