我试图在pyqt5中创建一个窗口应用程序,用户输入一个数字,然后单击(“按我”)按钮。
之后,根据用户输入的数字和一个按钮(“GO”)创建多个行
每列有三个带有三个文本框的标签
我已经成功制作了行,但是我无法管理的是在点击按钮时从文本框中获取数据
注1:为简单起见,我只是尝试一个文本框的代码,然后我将添加更多的文本框
注2:我听说过一些名为Lambda的函数,但我搜索了它,我找不到好的解释
注3:类似的问题对我不起作用:Acessing dynamically added widgets我不知道如何使用这个答案,因为我在布局,标签和qlinedit中有两种小部件
getting values from dynamically created qlinedits这个答案不适合我的情况,因为我想要一个唯一的按钮来获取所有创建的文本框中的数据
代码:
from PyQt5 import QtWidgets, QtGui, QtCore
from PyQt5 import *
from PyQt5.QtWidgets import QLineEdit,QLabel,QGridLayout
import sys
class Window(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Window, self).__init__(parent)
self.home()
def home(self):
self.grid=QGridLayout()
self.setLayout(self.grid)
self.label=QLabel(self)
self.label.setText("NO")
self.grid.addWidget(self.label,0,1)
self.pushButton_ok = QtWidgets.QPushButton("Press me", self)
self.pushButton_ok.clicked.connect(self.addtextbox)
self.grid.addWidget(self.pushButton_ok,0,10)
self.input1=QLineEdit(self)
self.grid.addWidget(self.input1,0,5)
def addtextbox(self):
no_of_process=(self.input1.text())
no=int(no_of_process)
n=0
while(n<no):
self.bursttime=QLabel(self)
self.bursttime.setText("b")
self.timeinput=QLineEdit(self)
self.grid.addWidget(self.bursttime,2*n+1,0)
self.grid.addWidget(self.timeinput,2*n+1,1)
n=n+1
self.go=QtWidgets.QPushButton("GO",self)
self.grid.addWidget(self.go,6,0)
self.go.clicked.connect(self.printvalues)
def printvalues():
n=0
#fetch data in some way
application = QtWidgets.QApplication(sys.argv)
window = Window()
window.setWindowTitle('Dynamically adding textboxes using a push button')
window.resize(250, 180)
window.show()
sys.exit(application.exec_())
试试吧:
import sys
from PyQt5.QtWidgets import (QLineEdit, QLabel, QGridLayout, QWidget,
QPushButton, QApplication, QSpinBox)
class Window(QWidget):
def __init__(self):
super().__init__()
self.home()
def home(self):
self.grid = QGridLayout()
self.setLayout(self.grid)
self.label = QLabel(self)
self.label.setText("NO")
self.grid.addWidget(self.label, 0, 1)
# self.input1 = QLineEdit(self)
self.input1 = QSpinBox(self) # +++
self.input1.setMinimum(1)
self.input1.setMaximum(12)
self.input1.setValue(3)
self.grid.addWidget(self.input1, 0, 5)
self.pushButton_ok = QPushButton("Press me", self)
self.pushButton_ok.clicked.connect(self.addtextbox) #(self.addCheckbox)
self.grid.addWidget(self.pushButton_ok, 0, 10)
def addtextbox(self):
countLayout = self.layout().count()
if countLayout > 3:
for it in range(countLayout - 3):
w = self.layout().itemAt(3).widget()
self.layout().removeWidget(w)
w.hide()
self.lineEdits = [] # +++
for n in range(self.input1.value()):
self.bursttime = QLabel(self)
self.bursttime.setText("b_{}".format(n))
self.timeinput = QLineEdit(self)
self.timeinput.textChanged.connect(lambda text, i=n : self.editChanged(text, i)) # +++
self.grid.addWidget(self.bursttime, 2*n+1, 0)
self.grid.addWidget(self.timeinput, 2*n+1, 1)
self.lineEdits.append('') # +++
self.go = QPushButton("GO") #, self)
self.grid.addWidget(self.go, 2*n+2, 0)
self.go.clicked.connect(self.printvalues)
def printvalues(self):
# fetch data in some way
for i, v in enumerate(self.lineEdits): # +++
print("bursttime: b_{}, timeinput: {}".format(i, v)) # +++
def editChanged(self, text, i): # +++
self.lineEdits[i] = text # +++
def addCheckbox(self):
print("def addCheckbox(self):")
if __name__ == "__main__":
application = QApplication(sys.argv)
window = Window()
window.setWindowTitle('Dynamically adding textboxes using a push button')
window.resize(250, 180)
window.show()
sys.exit(application.exec_())
我正在开发一个PyQt5应用程序,它有一个动态加载的整个标签,有QTableView,QLineEdit和少量QPushButtons,并且有类似的问题,我需要来自每个标签的QLineEdit的数据。我已经使用了QSignalMapper,因为我必须在textChanged()
信号上获取数据,但由于你有一个简单的按钮来获取数据,你可以像我在这个例子中那样使用QObject.findChildren()
:
from PyQt5 import QtWidgets, QtGui, QtCore
from PyQt5 import *
from PyQt5.QtWidgets import QLineEdit,QLabel,QGridLayout
import sys
class Window(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Window, self).__init__(parent)
self.home()
def home(self):
self.grid=QGridLayout()
self.setLayout(self.grid)
self.label=QLabel(self)
self.label.setText("NO")
self.grid.addWidget(self.label,0,1)
self.pushButton_ok = QtWidgets.QPushButton("Press me", self)
self.pushButton_ok.clicked.connect(self.addtextbox)
self.grid.addWidget(self.pushButton_ok,0,10)
self.input1=QLineEdit(self)
self.grid.addWidget(self.input1,0,5)
def addtextbox(self):
no_of_process=(self.input1.text())
no=int(no_of_process)
n=0
while(n<no):
self.bursttime=QLabel(self)
self.bursttime.setText("b")
self.timeinput=QLineEdit(self)
self.timeinput.setObjectName("timeinput_{0}".format(n))
self.grid.addWidget(self.bursttime,2*n+1,0)
self.grid.addWidget(self.timeinput,2*n+1,1)
n=n+1
self.go=QtWidgets.QPushButton("GO",self)
self.grid.addWidget(self.go,6,0)
self.go.clicked.connect(self.printvalues)
def printvalues(self):
for child in self.findChildren(QLineEdit, QtCore.QRegExp("timeinput_(\d)+")):
print(child.text())
application = QtWidgets.QApplication(sys.argv)
window = Window()
window.setWindowTitle('Dynamically adding textboxes using a push button')
window.resize(250, 180)
window.show()
sys.exit(application.exec_())
附:我修复了你的pushButton_ok.clicked()
信号,它正在调用不存在的addCheckBox()
。