59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
# -*- coding: utf-8 -*-
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'''
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【簡介】
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PyQt5中 QLineEdit的驗證器範例
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'''
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from PyQt5.QtWidgets import QApplication, QLineEdit , QWidget , QFormLayout
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from PyQt5.QtGui import QIntValidator ,QDoubleValidator , QRegExpValidator
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from PyQt5.QtCore import QRegExp
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import sys
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class lineEditDemo(QWidget):
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def __init__(self, parent=None):
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super(lineEditDemo, self).__init__(parent)
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self.setWindowTitle("QLineEdit範例")
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flo = QFormLayout()
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pIntLineEdit = QLineEdit( )
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pDoubleLineEdit = QLineEdit()
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pValidatorLineEdit = QLineEdit( )
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flo.addRow("整數", pIntLineEdit)
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flo.addRow("浮點數", pDoubleLineEdit)
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flo.addRow("字母和數字", pValidatorLineEdit)
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pIntLineEdit.setPlaceholderText("整數");
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pDoubleLineEdit.setPlaceholderText("浮點數");
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pValidatorLineEdit.setPlaceholderText("字母和數字");
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# 整數，範圍：[1, 99]
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pIntValidator = QIntValidator(self)
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pIntValidator.setRange(1, 99)
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# 浮點數，範圍：[-360, 360]，精度：小數點後兩位
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pDoubleValidator = QDoubleValidator(self)
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pDoubleValidator.setRange(-360, 360)
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pDoubleValidator.setNotation(QDoubleValidator.StandardNotation)
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pDoubleValidator.setDecimals(2)
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# 字母和數字
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reg = QRegExp("[a-zA-Z0-9]+$")
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pValidator = QRegExpValidator(self)
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pValidator.setRegExp(reg)
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# 設定驗證器
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pIntLineEdit.setValidator(pIntValidator)
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pDoubleLineEdit.setValidator(pDoubleValidator)
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pValidatorLineEdit.setValidator(pValidator)
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self.setLayout(flo)
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if __name__ == "__main__":
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app = QApplication(sys.argv)
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win = lineEditDemo()
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win.show()
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sys.exit(app.exec_())
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