对于 PyQt5 仪器项目，我希望有几个相继的 QInputDialog 以便输入一些输入。 如果用户按下“取消”按钮，我希望程序返回到第一个对话框窗口。 这是我的代码:
def getChoice(self):
while True:
items = ("Make a new testfile","Open an existing one")
item, okPressed = QInputDialog.getItem(self, "Select","You want to: ", items, 0, False)
if not okPressed: #close all
sys.exit(0)
elif okPressed and item:
print(item)
if item == "Open an existing one" :
pathFile, ok = QFileDialog.getOpenFileName(self, "Open a file", "","All Files(*);;Python Files (*.py)")
print(pathFile)
break
elif item == "Make a new testfile" :
items2 = ("New profil","Existing profil")
item2, okPressed2 = QInputDialog.getItem(self,"Select", "", items2, 0, False)
if not okPressed2: #pass so come back to the previous inputDialog
pass
elif okPressed2 and item2:
print(item2)
if item2 == "New profil" :
while True:
name, ok = QInputDialog.getText(self, "Profil name", "Enter name:", QLineEdit.Normal)
if ok and name:
dirName = 'Profiles/' + name
if not os.path.exists(dirName):
os.makedirs(dirName)
break
else :
QMessageBox.about(self, 'Error','Profile name already taken')
elif ok and not name:
QMessageBox.about(self, 'Error', 'Enter a name')
else :
#here I'd like to return to the initial inputDialog if the user press cancel
break
elif item2 == "Existing profil" :
pathprofil = QFileDialog.getOpenFileName(self, "Nom de profil", "","All Files(*)")
print(pathprofil)
break
使用这种方法，当第二个 while 循环发生时，我遇到了问题:我想在激活取消按钮时返回到第一个循环。
我不认为存在一种方法可以打破另一个 while 循环，而且我缺乏想象力..
关于如何做到这一点有什么想法吗？
最佳答案
尝试一下:
import os
from PyQt5.QtWidgets import (QApplication, QWidget, QLineEdit,
QInputDialog, QFileDialog, QMessageBox,
QGridLayout, QLabel, QPushButton, QFrame)
class InputDialog(QWidget):
def __init__(self):
super(InputDialog,self).__init__()
label1 = QLabel("Make/Open file:")
label2 = QLabel("pathFile:")
label3 = QLabel("profil:")
self.nameLable = QLabel()
self.nameLable.setFrameStyle(QFrame.Panel | QFrame.Sunken)
self.pathFile = QLabel()
self.pathFile.setFrameStyle(QFrame.Panel | QFrame.Sunken)
self.profilLable = QLabel()
self.profilLable.setFrameStyle(QFrame.Panel | QFrame.Sunken)
nameButton = QPushButton("...")
nameButton.clicked.connect(self.selectName)
profilButton = QPushButton("...")
profilButton.clicked.connect(self.selectProfil)
mainLayout = QGridLayout()
mainLayout.addWidget(label1, 0, 0)
mainLayout.addWidget(self.nameLable, 0, 1)
mainLayout.addWidget(nameButton, 0, 2)
mainLayout.addWidget(label3, 1, 0)
mainLayout.addWidget(self.profilLable,1, 1)
mainLayout.addWidget(profilButton, 1, 2)
mainLayout.addWidget(label2, 2, 0)
mainLayout.addWidget(self.pathFile, 2, 1, 1, 2)
mainLayout.setRowMinimumHeight(2, 40)
mainLayout.addWidget(QLabel(), 3, 0)
mainLayout.setRowStretch(3, 1)
mainLayout.setColumnMinimumWidth(1, 200 )
mainLayout.setSpacing(5)
self.setLayout(mainLayout)
def selectName(self):
items = ("Make a new testfile", "Open an existing one")
item, okPressed = QInputDialog.getItem(self,
"Select",
"You want to: ",
items, 0, False)
if okPressed :
self.nameLable.setText(item)
if item == "Open an existing one" :
pathFile, ok = QFileDialog.getOpenFileName(self,
"Open a file",
"",
"All Files(*);;Python Files (*.py)")
if pathFile:
self.pathFile.setText(pathFile)
self.profilLable.setText("")
elif item == "Make a new testfile" :
self.selectProfil()
else:
sys.exit(0)
def selectProfil(self):
if self.nameLable.text() == "Make a new testfile" :
self.pathFile.setText("")
items2 = ("New profil", "Existing profil")
item2, okPressed2 = QInputDialog.getItem(self,"Select", "", items2, 0, False)
if not okPressed2: #pass so come back to the previous inputDialog
self.selectName()
self.profilLable.setText(item2)
if item2 == "New profil" :
name, ok = QInputDialog.getText(self,
"Profil name",
"Enter file name:",
QLineEdit.Normal)
if ok and name:
dirName = 'Profiles' # /' + name
if not os.path.exists(dirName):
os.makedirs(dirName)
filepath = os.path.join(dirName, name)
if not os.path.isfile(filepath):
f = open(filepath, "a")
f.close()
self.pathFile.setText(os.path.abspath(filepath))
else :
QMessageBox.about(self, 'Error','Profile name already taken')
self.selectProfil()
elif ok and not name:
QMessageBox.about(self, 'Error', 'Enter a name')
else :
#here I'd like to return to the initial inputDialog if the user press cancel
self.selectProfil()
elif item2 == "Existing profil" :
pathprofil, ok = QFileDialog.getOpenFileName(self,
"Nom de profil",
"", "All Files(*)")
self.pathFile.setText(pathprofil)
elif not self.nameLable.text():
QMessageBox.about(self, 'Error', 'Select `Make / Open file`')
self.selectName()
if __name__=="__main__":
import sys
app = QApplication(sys.argv)
myshow = InputDialog()
myshow.setWindowTitle("InputDialog")
myshow.show()
sys.exit(app.exec_())
关于python 多个QInputDialog，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55004880/