PyQt 自定义小部件未显示 [英] PyQt custom widget not showing
问题描述
我是 PyQt 的新手.
I'm new to PyQt.
我正在尝试将 QTableView 放在一个类中,这样我就可以在类中定义它的行为,而不会将它与所有其他代码混合,但是当我这样做时它不会显示.
I'm trying to put a QTableView in a class, so I can define it's behaviour in the class without mixing it with all the other code, but when I do so it just won't show.
这是我正在学习的代码.它是从 [使用 QAbstractTableModel 在 pyqt 中编辑表] 中借用的.稍微重新调整以与 Qt5 一起使用并将 QTableView 移动到一个类中
Here's the code i'm learning from. It was borrowed from [ Edit table in pyqt using QAbstractTableModel ]. Readapted it slightly to use with Qt5 and moved the QTableView in a class
import sys
from PyQt5 import QtGui, QtCore
from PyQt5.QtGui import *
from PyQt5.QtWidgets import QMainWindow, QPushButton, QApplication, QVBoxLayout, QTableView, QWidget
from PyQt5.QtCore import *
# données à représenter
my_array = [['00','01','02'],
['10','11','12'],
['20','21','22']]
def main():
app = QApplication(sys.argv)
w = MyWindow()
w.show()
sys.exit(app.exec_())
# création de la vue et du conteneur
class MyWindow(QWidget):
def __init__(self, *args):
QWidget.__init__(self, *args)
tablemodel = MyTableModel(my_array, self)
table = Table(tablemodel)
layout = QVBoxLayout(self)
layout.addWidget(table)
self.setLayout(layout)
# création du modèle
class Table(QWidget):
def __init__(self, model):
super().__init__()
self.model = model
self.initUI()
def initUI(self):
self.setMinimumSize(300,300)
self.view = QTableView()
self.view.setModel(self.model)
class MyTableModel(QAbstractTableModel):
def __init__(self, datain, parent = None, *args):
QAbstractTableModel.__init__(self, parent, *args)
self.arraydata = datain
def rowCount(self, parent):
return len(self.arraydata)
def columnCount(self, parent):
return len(self.arraydata[0])
def data(self, index, role):
if not index.isValid():
return None
elif role != Qt.DisplayRole:
return None
return (self.arraydata[index.row()][index.column()])
"""
def setData(self, index, value):
self.arraydata[index.row()][index.column()] = value
return True
def flags(self, index):
return Qt.ItemIsEditable
"""
if __name__ == "__main__":
main()
如果我删除课程并使用
table = QTableView()
table.setModel(tablemodel)
表格显示没有问题.
我错过了什么?
推荐答案
问题:table.view 没有父级.如果你添加 self.view.show()
来测试 Table.initUi()
,你会得到两个小部件,MyWindow
与空表tmoreau 将 table.view
编写为独立的小部件.
the problem: table.view has no parent. If you add self.view.show()
to test to Table.initUi()
, you get two widgets, MyWindow
with empty table as tmoreau wrote and table.view
as isolated widget.
您可以在Table.initUi()
self.view = QTableView(self)
(然后您不需要布局)或将 table.view 添加到 tmoreau 编写的布局中,然后重新设置 tableview.
(then you don't need a layout) or add table.view to a layout as written by tmoreau, Then the tableview is reparented.
去掉class也是一样的效果,然后把tableview加到layout中.
Removing the class has the same effect, then the tableview is added to layout.
这篇关于PyQt 自定义小部件未显示的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!