################################
PyQt5中文网 - PyQt5全套视频教程 #
https://www.PyQt5.cn/ #
主讲： 村长 #
################################
from PyQt5.Qt import *
import sys
'''
setPlaceholderText()
placeholderText()
文本内容限定（18-150）：
QValidator.Acceptable
QValidator.Intermediate
QValidator.Invalid
'''
class Validator(QValidator):
def validate(self, num, pos):
print(num, pos)
try:
if 18 int(num) 150:
return (QValidator.Acceptable, num, pos)
elif 1 int(num) 14:
return (QValidator.Intermediate, num, pos)
else:
return (QValidator.Invalid, num, pos)
except:
if len(num) == 0:
return (QValidator.Intermediate, num, pos)
return (QValidator.Invalid, num, pos)
def fixup(self, v_str):
print('XXX', v_str)
try:
if int(v_str) < 18:
return '18'
except:
return '18'
class My_int(QIntValidator):
def fixup(self, v_str):
print('XXX', v_str)
try:
if int(v_str) < 18:
return '18'
except:
return '18'
class Window(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("QLineEdit-验证器 - PyQt5中文网")
self.resize(600, 500)
self.func_list()
def func_list(self):
self.func()
def func(self):
led = QLineEdit(self)
led.move(150, 150)
led1 = QLineEdit(self)
led1.move(150, 220)
validator = Validator() # 这个抽象类需要子类化
led.setValidator(validator)
# validator2 = My_int(18,150)
# led.setValidator(validator2)
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
Original: https://www.cnblogs.com/lvdongjie/p/16331344.html
Author: Avatarx
Title: PyQt5 文本内容限定
原创文章受到原创版权保护。转载请注明出处：https://www.johngo689.com/546523/
转载文章受原作者版权保护。转载请注明原作者出处！