PyQt5 – QLineEdit
QLineEdit :它允许用户输入和编辑单行纯文本,具有有用的编辑功能集合,包括撤消和重做、剪切和粘贴以及拖放。它是 PyQt5 中接收键盘输入的基本小部件,输入可以是文本、数字甚至符号。下面是行编辑的样子
例子 :
我们将创建一个行编辑和一个标签,当用户在其中输入文本并按下回车键时,标签将显示输入的文本。
下面是实现
# importing libraries
from PyQt5.QtWidgets import *
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import *
from PyQt5.QtCore import *
import sys
class Window(QMainWindow):
def __init__(self):
super().__init__()
# setting title
self.setWindowTitle("Python ")
# setting geometry
self.setGeometry(100, 100, 500, 400)
# calling method
self.UiComponents()
# showing all the widgets
self.show()
# method for components
def UiComponents(self):
# creating a QLineEdit object
line_edit = QLineEdit("GeeksforGeeks", self)
# setting geometry
line_edit.setGeometry(80, 80, 150, 40)
# creating a label
label = QLabel("GfG", self)
# setting geometry to the label
label.setGeometry(80, 150, 120, 60)
# setting word wrap property of label
label.setWordWrap(True)
# adding action to the line edit when enter key is pressed
line_edit.returnPressed.connect(lambda: do_action())
# method to do action
def do_action():
# getting text from the line edit
value = line_edit.text()
# setting text to the label
label.setText(value)
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app
sys.exit(App.exec())