Pyside：使用按钮将文本从 qlineEdit 复制到标签和字符串变量
我正在尝试使用 pyside 按钮将文本从 qlineEdit 字段复制到标签和字符串变量。我已经完成了几乎所有的 Zetcode 教程，但显然我在这里遗漏了一些关键的东西。温柔一点，我是 python 新手，也是 pyside 新手。我正在寻找更多 pyside 教程。
我尝试使用我的 Qbutton 从 lineEdit 复制文本，然后在绝望中，我尝试了 xxxxxxx
这是我的代码（任何建议将不胜感激，特别是链接到我可以了解我需要知道的内容）：
谢谢你的帮助，马克
import sys
from PySide import QtGui, QtCore
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
nu_prg_name_label = QtGui.QLabel('Program Name:')
author_label = QtGui.QLabel('Author')
qle = QtGui.QLineEdit(self)
qle.textChanged[str].connect(self.onChanged)
# I added the buttons
okButton = QtGui.QPushButton("OK")
cancelButton = QtGui.QPushButton("Cancel")
grid = QtGui.QGridLayout()
grid.setSpacing(4)
# (arg__1, row, column, rowSpan, columnSpan[, alignment=0])
grid.addWidget(nu_prg_name_label, 1, 0)
grid.addWidget(author_label, 2, 0)
grid.addWidget(qle, 1, 1, 1, 4)
# I added the following 2 lines
grid.addWidget(okButton, 3, 3)
grid.addWidget(cancelButton, 3, 4)
#grid.addWidget(review_label, 3, 0)
# The QPushButton has a predefined 'signal' called 'clicked'
# which is triggered every time that the button is pressed.
# We will just 'connect' this signal to the sayHello() function:
# Connect the button to the function
okButton.clicked.connect(self.sendtxt2_qle)
#grid.addWidget(author_label, 2, 0)
#grid.addWidget(author_LineEdit02, 2, 1)
#grid.addWidget(review_label, 3, 0)
#grid.addWidget(review_TextEdit, 3, 1, 5, 1)
self.setLayout(grid)
# Horizontal, vertical, width, length
self.setGeometry(900, 300, 400, 100)
self.setWindowTitle('Create Dirs [Info, TestArea, ItWorks] for a Program')
self.show()
def onChanged(self, text):
nu_prg_name = self.qle.getText()
self.author_label.setText(nu_prg_name)
print "Line 67: nu_prg_name = " + nu_prg_name
def sendtxt2_qle(self):
nu_prg_name = self.grid.qle.getText()
self.grid.author_label.setText(nu_prg_name)
print "Line 72: nu_prg_name = " + nu_prg_name
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
I'm trying to get a pyside button to copy text from a qlineEdit field to a label and to a string variable. I have been through almost all of the Zetcode tutorials, but obviously I am missing something critical here. Be gentle, I'm a python newbie and a pyside newbie. I'm looking for more pyside tutorials.
I tried using my Qbutton to copy the text from the lineEdit, and then in a fit of desperation, I tried xxxxxxx
Here's my code (any suggestions would be much appreciated, particularly with a link to where I can learn about what I needed to know):
Thank you for your help, Marc
import sys
from PySide import QtGui, QtCore
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
nu_prg_name_label = QtGui.QLabel('Program Name:')
author_label = QtGui.QLabel('Author')
qle = QtGui.QLineEdit(self)
qle.textChanged[str].connect(self.onChanged)
# I added the buttons
okButton = QtGui.QPushButton("OK")
cancelButton = QtGui.QPushButton("Cancel")
grid = QtGui.QGridLayout()
grid.setSpacing(4)
# (arg__1, row, column, rowSpan, columnSpan[, alignment=0])
grid.addWidget(nu_prg_name_label, 1, 0)
grid.addWidget(author_label, 2, 0)
grid.addWidget(qle, 1, 1, 1, 4)
# I added the following 2 lines
grid.addWidget(okButton, 3, 3)
grid.addWidget(cancelButton, 3, 4)
#grid.addWidget(review_label, 3, 0)
# The QPushButton has a predefined 'signal' called 'clicked'
# which is triggered every time that the button is pressed.
# We will just 'connect' this signal to the sayHello() function:
# Connect the button to the function
okButton.clicked.connect(self.sendtxt2_qle)
#grid.addWidget(author_label, 2, 0)
#grid.addWidget(author_LineEdit02, 2, 1)
#grid.addWidget(review_label, 3, 0)
#grid.addWidget(review_TextEdit, 3, 1, 5, 1)
self.setLayout(grid)
# Horizontal, vertical, width, length
self.setGeometry(900, 300, 400, 100)
self.setWindowTitle('Create Dirs [Info, TestArea, ItWorks] for a Program')
self.show()
def onChanged(self, text):
nu_prg_name = self.qle.getText()
self.author_label.setText(nu_prg_name)
print "Line 67: nu_prg_name = " + nu_prg_name
def sendtxt2_qle(self):
nu_prg_name = self.grid.qle.getText()
self.grid.author_label.setText(nu_prg_name)
print "Line 72: nu_prg_name = " + nu_prg_name
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
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评论（3）
我意识到这个线程已经死了，但想为新用户进行更新。旧的 os.path 现在是子进程（导入子进程）。
我自己尝试将 QString 传递给子进程调用时遇到了这个问题，并偶然发现了答案。
使用
str(object.displayText())将 Qstring 转换为 String。I realize this thread is necro but wanted to update for newer users. The old os.path is now subprocess (import subprocess).
Ran into this problem myself trying to pass QString to a subprocess call and stumbled on the answer.
Use
str(object.displayText())to convert Qstring to String.以下是我如何实现 ekhumoro 的有用答案：
the following is how I implemented the helpful answer from ekhumoro:
您发布的脚本存在几个问题：
author_label和qle在initUI方法外部引用，因此需要将它们替换为self.author_label和self.qle无论它们在哪里使用。onChanged方法尝试使用不存在的方法getText检索行编辑文本。使用self.qle.text()，或者更好的是，使用由onChanged方法传递给onChanged方法的text参数>textChanged 信号。sendtxt2_qle方法与 (2) 具有类似的错误，并且还错误地尝试引用qle和author_label作为self.grid 的属性（不存在）。请参阅 (1) 了解如何解决此问题。注意：当我运行脚本的修改版本时，我从打印语句中得到了一些损坏的输出。这似乎是 PySide 中的一个错误，因为相同的脚本使用 PyQt4 运行得非常好。 （我使用的是 PySide-1.09。）
There are several issues with the script you posted:
author_labelandqleare referenced outside theinitUImethod, so they need to be replaced withself.author_labelandself.qlewherever they are used.onChangedmethod tries to retrieve the line-edit text using the non-existent methodgetText. Useself.qle.text(), or, better still, use thetextargument that is passed to theonChangedmethod by thetextChangedsignal.sendtxt2_qlemethod has similar errors to (2), and also wrongly tries to referenceqleandauthor_labelas attributes ofself.grid(which does not exist). See (1) for how to fix this.Note: When I ran the amended version of you script, I got some corrupted output from the print statements. This appears to be a bug in PySide, because the same script runs perfectly fine using PyQt4. (I'm using PySide-1.09.)