import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
def pressenter():
print ("Enter pressed")
def window():
app = QApplication(sys.argv)
win = QWidget()
editbox = QLineEdit()
editbox.setValidator(QDoubleValidator(0.99,99.99,2))
eform = QFormLayout()
eform.addRow("Enter text: ",editbox)
editbox.editingFinished.connect(pressenter)
win.setLayout(eform)
win.setWindowTitle("My Test Window")
win.show()
sys.exit(app.exec_())
if __name__ == '__main__':
window()
我有简单的编辑框,当我按下回车键时,我希望我的光标退出编辑框,所以我知道我的输入已被接受。这意味着当我想再次编辑时,我特别需要再次选择编辑框。我试图搜索这个,但我不是天生的英语演讲者或者说,也许这是我的问题,但我找不到好的答案。
我目前注意到有两个问题:我需要的Validator是阻止输入按键,另一个是pressenter()函数可能应该做的事情,但我不知道使用焦点方法是什么。
您可以将焦点设置到主窗口:(只有当您的输入有效时才会切换焦点,这是您想要的行为吗?)
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
def pressenter(win):
win.setFocus()
def window():
app = QApplication(sys.argv)
win = QWidget()
editbox = QLineEdit()
editbox.setValidator(QDoubleValidator(0.99,99.99,2))
eform = QFormLayout()
eform.addRow("Enter text: ",editbox)
editbox.editingFinished.connect(lambda: pressenter(win))
win.setLayout(eform)
win.setWindowTitle("My Test Window")
win.show()
sys.exit(app.exec_())
if __name__ == '__main__':
window()
您还可以在pressenter
函数中进行验证,如果不接受输入,则重置编辑框:
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
def pressenter(win, editbox):
val = QDoubleValidator(0.99,99.99,2)
if val.validate(editbox.text(),0)[0] == QValidator.Acceptable:
win.setFocus()
else:
editbox.setText('')
def window():
app = QApplication(sys.argv)
win = QWidget()
editbox = QLineEdit()
eform = QFormLayout()
eform.addRow("Enter text: ", editbox)
editbox.editingFinished.connect(lambda: pressenter(win, editbox))
win.setLayout(eform)
win.setWindowTitle("My Test Window")
win.show()
sys.exit(app.exec_())
if __name__ == '__main__':
window()