目的:qml中combobox的Model用python实现 Model,并通过QML显示出来
要点:qt 5已经改变了roleNames方法，字符串需要用原始ascll 码，字符串前面加b来实现改点;
数据项目必须扩展来自pyqt 5的object.
要点:qt 5已经改变了roleNames方法，字符串需要用原始ascll 码，字符串前面加b来实现改点;
数据项目必须扩展来自pyqt 5的object.
ListModel.py
from PyQt5 import QtCore, QtGui
from PyQt5.QtCore import QAbstractListModel, QModelIndex, Qt, QUrl, QVariant
class LottoListModel(QtCore.QAbstractListModel):
titleRole = Qt.UserRole + 1
def __init__(self, parent=None):
super(LottoListModel, self).__init__(parent)
self.items = []
def roleNames(self):
names = {}
names[self.titleRole] = b"title"
# names[self.colorRole] = "color"
return names
def appendRow(self, item):
self.items.append(item)
def rowCount(self, parent=QtCore.QModelIndex()):
print('rowcount.....')
return len(self.items)
def data(self, index, role=Qt.DisplayRole):
print('get data....',index,' ',role)
try:
item = self.items[index.row()]
except IndexError:
return QVariant()
if role == self.titleRole:
return item.title()
return QVariant()
class LottoListModel(QtCore.QAbstractListModel):
titleRole = Qt.UserRole + 1
def __init__(self, parent=None):
super(LottoListModel, self).__init__(parent)
self.items = []
def roleNames(self):
names = {}
names[self.titleRole] = b"title"
# names[self.colorRole] = "color"
return names
def appendRow(self, item):
self.items.append(item)
def rowCount(self, parent=QtCore.QModelIndex()):
print('rowcount.....')
return len(self.items)
def data(self, index, role=Qt.DisplayRole):
print('get data....',index,' ',role)
try:
item = self.items[index.row()]
except IndexError:
return QVariant()
if role == self.titleRole:
return item.title()
return QVariant()
class LottoListItem(object):#核心关键，必须是python object的子类作为项目
def __init__(self, title):
self._title = title
def title(self):
self._title = title
def title(self):
return self._title
main.py:
import sys
import os
from PyQt5.QtCore import QObject, QUrl, pyqtSlot, QVariant
from PyQt5.QtWidgets import QApplication
from PyQt5.QtGui import QGuiApplication
from PyQt5.QtQml import QQmlApplicationEngine
from PyQt5.QtCore import QObject, QUrl, Qt,QAbstractTableModel
from PyQt5.QtCore import pyqtProperty,pyqtSignal
import PyQt5
import os
from PyQt5.QtCore import QObject, QUrl, pyqtSlot, QVariant
from PyQt5.QtWidgets import QApplication
from PyQt5.QtGui import QGuiApplication
from PyQt5.QtQml import QQmlApplicationEngine
from PyQt5.QtCore import QObject, QUrl, Qt,QAbstractTableModel
from PyQt5.QtCore import pyqtProperty,pyqtSignal
import PyQt5
import ListModel as LM
class MainApp(QObject):
@pyqtSlot(result=QVariant)
def getAlgorithm(self):
self.myModel=LM.LottoListModel()
self.myModel.appendRow(LM.LottoListItem("0001"))
self.myModel.appendRow(LM.LottoListItem("0002"))
self.myModel=LM.LottoListModel()
self.myModel.appendRow(LM.LottoListItem("0001"))
self.myModel.appendRow(LM.LottoListItem("0002"))
return self.myModel;
app = QGuiApplication (sys.argv)
engine=QQmlApplicationEngine()
ctx = engine.rootContext()
engine=QQmlApplicationEngine()
ctx = engine.rootContext()
engine.load(QUrl("view.qml "))
window = engine.rootObjects()[0]
_MainApp = MainApp(window)
_MainApp.logwin[str].connect(window.logger)
_MainApp.getAlgorithm();
ctx.setContextProperty("py_MainApp", _MainApp)
window.show()
_MainApp = MainApp(window)
_MainApp.logwin[str].connect(window.logger)
_MainApp.getAlgorithm();
ctx.setContextProperty("py_MainApp", _MainApp)
window.show()
sys.exit(app.exec_())
view.qml
import QtQuick 2.5
import QtQuick.Controls 1.4
Rectangle {
id: myItem
color:'red'
width: 500; height: 500
ComboBox {
model:py_MainApp.getAlgorithm()
width: 200
import QtQuick.Controls 1.4
Rectangle {
id: myItem
color:'red'
width: 500; height: 500
ComboBox {
model:py_MainApp.getAlgorithm()
width: 200
}
ListView {
width: 200; height: 250
model: myModel
delegate: Text {title }
width: 200; height: 250
model: myModel
delegate: Text {title }
}
}
