tck*_*qnt 6 python user-interface mdi pyqt pyqt5
我想要做的是Countrypage通过单击本身的“新建”按钮来打开一个新的子窗口Countrypage。
例如，如果我在一个CountryPage窗口（窗口标题：“国家/地区页面”）中单击“新建”按钮，Countrypage则会在MDI区域中再打开一个新窗口（窗口标题：“国家/地区页面1”）。现在，如果我们单击“国家/地区页面 1”中的“新建”按钮，MDI 区域中将再打开一个新窗口（窗口标题：“国家/地区页面 2”），依此类推 - 我想一一关闭窗口通过按 中相应的“关闭”按钮Countrypage。仅通过按“新建”按钮才能打开新窗口。
如果我们通过按“关闭”按钮关闭最后打开的窗口，“国家”文本框中的文本项将自动更新到前一个窗口的“国家”文本框中，依此类推。
主要脚本：
import sys,os
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from sample_countrypage import Countrypage
class MainPage(QMainWindow):
count = 0
def __init__(self):
super().__init__()
self.mdi = QMdiArea()
self.mdi.setFixedSize(1000,400)
self.mdi.setHorizontalScrollBarPolicy(Qt.ScrollBarAsNeeded)
self.mdi.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
self.setWindowTitle(" Sample Programme")
self.setGeometry(100,100,1600,600)
self.Ui()
self.show()
def Ui(self):
self.btn1=QPushButton("Country")
self.btn1.setFixedSize(100, 30)
self.btn1.clicked.connect(self.countrypage)
self.left_layout = QVBoxLayout()
self.right_layout = QHBoxLayout()
self.main_layout = QHBoxLayout()
self.left_layout.setContentsMargins(3,5,5,3)
self.left_layout.addWidget(self.btn1)
self.left_layout.addStretch()
self.right_layout.addWidget(self.mdi)
self.main_layout.setSpacing(5)
self.main_layout.setContentsMargins(0,0,0,0)
self.main_layout.addLayout(self.left_layout)
self.main_layout.addLayout(self.right_layout)
self.main_layout.addStretch()
widget = QWidget()
widget.setLayout(self.main_layout)
self.setCentralWidget(widget)
self.subwindow1 = QMdiSubWindow()
self.subwindow1.setObjectName("SubWindow_1")
# self.subwindow1.setWindowFlag(Qt.FramelessWindowHint)
print(Countrypage.btn2click)
def countrypage(self):
self.countrywindow = Countrypage()
self.subwindow1.setWidget(self.countrywindow)
self.subwindow1.setWindowTitle("Create Country")
self.subwindow1.setFixedWidth(300)
self.mdi.addSubWindow(self.subwindow1)
self.subwindow1.show()
self.mdi.cascadeSubWindows()
self.countrywindow.closeRequsted.connect(self.subwindow1close)
def subwindow1close(self):
print("close activated from mdi programme")
self.subwindow1.close()
if __name__ == "__main__":
app = QApplication(sys.argv)
mainwindow = MainPage()
app.setStyle("Windows")
mainwindow.show()
sys.exit(app.exec_())
国家页面.py
import sys,os
from PyQt5.QtWidgets import QWidget,QApplication,QPushButton,QLineEdit,QFormLayout,QVBoxLayout,QHBoxLayout
from PyQt5.QtCore import pyqtSignal
class Countrypage(QWidget):
closeRequsted = pyqtSignal()
def __init__(self):
super().__init__()
self.btn1 = QPushButton("close")
self.btn2 = QPushButton("New")
self.btn1.clicked.connect(self.result)
self.btn2.clicked.connect(self.btn2click)
self.tb_country = QLineEdit()
self.tb_continent =QLineEdit()
self.form_layout = QFormLayout()
self.form_layout.addRow("Country",self.tb_country)
self.form_layout.addRow("continent",self.tb_continent)
self.form_layout.addRow("",self.btn2)
self.form_layout.addRow("",self.btn1)
self.setLayout(self.form_layout)
def result(self):
self.closeRequsted.emit()
def btn2click(self):
btn2text = (self.btn2.text())
print(btn2text)
if __name__=="__main__":
app = QApplication(sys.argv)
countrywin = Countrypage()
countrywin.show()
sys.exit(app.exec_())
子窗口的添加和关闭最好由主窗口处理。该类CountryPage不需要了解有关子窗口的任何信息。新建/关闭按钮可以直接连接到主窗口的方法。这样可以更轻松地通过 mdi 区域的功能来管理子窗口。
下面是您的示例的重写，它应该满足您的要求：
主要脚本：
import sys, os
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
class MainPage(QMainWindow):
def __init__(self):
super().__init__()
self.mdi = QMdiArea()
self.mdi.setFixedSize(1000, 400)
self.mdi.setHorizontalScrollBarPolicy(Qt.ScrollBarAsNeeded)
self.mdi.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
self.setWindowTitle("Sample Programme")
self.setGeometry(100, 100, 1600, 600)
self.Ui()
def Ui(self):
self.btn1 = QPushButton("Country")
self.btn1.setFixedSize(100, 30)
self.btn1.clicked.connect(self.countrypage)
self.left_layout = QVBoxLayout()
self.right_layout = QHBoxLayout()
self.main_layout = QHBoxLayout()
self.left_layout.setContentsMargins(3, 5, 5, 3)
self.left_layout.addWidget(self.btn1)
self.left_layout.addStretch()
self.right_layout.addWidget(self.mdi)
self.main_layout.setSpacing(5)
self.main_layout.setContentsMargins(0, 0, 0, 0)
self.main_layout.addLayout(self.left_layout)
self.main_layout.addLayout(self.right_layout)
self.main_layout.addStretch()
widget = QWidget()
widget.setLayout(self.main_layout)
self.setCentralWidget(widget)
def countrypage(self):
page = Countrypage()
subwindow = self.mdi.addSubWindow(page)
subwindow.setWindowTitle("Create Country")
subwindow.setFixedWidth(300)
page.btn_close.clicked.connect(self.subwindowclose)
page.btn_new.clicked.connect(self.countrypage)
subwindow.show()
self.mdi.cascadeSubWindows()
def subwindowclose(self):
print("close activated from mdi programme")
current = self.mdi.activeSubWindow()
if current is not None:
self.mdi.activatePreviousSubWindow()
previous = self.mdi.activeSubWindow()
if previous is not None:
previous.widget().update_fields(current.widget())
current.close()
if __name__ == "__main__":
app = QApplication(sys.argv)
mainwindow = MainPage()
app.setStyle("Windows")
mainwindow.show()
sys.exit(app.exec_())
国家页面.py：
import sys,os
from PyQt5.QtWidgets import QWidget,QApplication,QPushButton,QLineEdit,QFormLayout,QVBoxLayout,QHBoxLayout
from PyQt5.QtCore import pyqtSignal
class Countrypage(QWidget):
def __init__(self):
super().__init__()
self.btn_close = QPushButton("Close")
self.btn_new = QPushButton("New")
self.tb_country = QLineEdit()
self.tb_continent = QLineEdit()
self.form_layout = QFormLayout()
self.form_layout.addRow("Country", self.tb_country)
self.form_layout.addRow("Continent", self.tb_continent)
self.form_layout.addRow("", self.btn_close)
self.form_layout.addRow("", self.btn_new)
self.setLayout(self.form_layout)
def update_fields(self, other):
if isinstance(other, Countrypage):
self.tb_country.setText(other.tb_country.text())
self.tb_continent.setText(other.tb_continent.text())
else:
raise TypeError('invalid page type')