qlistwidget翻页
时间: 2023-08-23 22:04:43 浏览: 128
QListWidget不支持翻页功能,但你可以通过使用QListView和QAbstractItemModel来实现翻页。下面是一个简单的实现示例:
```python
from PyQt5.QtWidgets import QDialog, QVBoxLayout, QListView, QPushButton, QHBoxLayout, QWidget
from PyQt5.QtCore import Qt, QAbstractListModel, QModelIndex
class MyModel(QAbstractListModel):
def __init__(self, data, parent=None):
super().__init__(parent)
self._data = data
def rowCount(self, parent):
return len(self._data)
def data(self, index, role):
if role == Qt.DisplayRole:
return self._data[index.row()]
class MyDialog(QDialog):
def __init__(self, data, parent=None):
super().__init__(parent)
self.list_view = QListView()
self.model = MyModel(data)
self.list_view.setModel(self.model)
self.prev_button = QPushButton("Prev")
self.next_button = QPushButton("Next")
self.prev_button.clicked.connect(self.prev_page)
self.next_button.clicked.connect(self.next_page)
self.page_size = 10
self.page_num = 0
self.update_list_view()
layout = QVBoxLayout()
layout.addWidget(self.list_view)
hbox = QHBoxLayout()
hbox.addWidget(self.prev_button)
hbox.addWidget(self.next_button)
w = QWidget()
w.setLayout(hbox)
layout.addWidget(w)
self.setLayout(layout)
def prev_page(self):
if self.page_num > 0:
self.page_num -= 1
self.update_list_view()
def next_page(self):
if self.page_num < self.model.rowCount(None) // self.page_size:
self.page_num += 1
self.update_list_view()
def update_list_view(self):
start = self.page_num * self.page_size
end = (self.page_num + 1) * self.page_size
data = [self.model.data(self.model.index(row, 0), Qt.DisplayRole) for row in range(start, end)]
self.list_view.setModel(MyModel(data))
```
在这个示例中,我们使用QAbstractListModel来创建一个简单的列表模型。我们还创建了一个QDialog,其中包含一个QListView和两个QPushButton,用于向前和向后翻页。我们使用模型的rowCount和data方法来返回行数和数据。我们还定义了prev_page和next_page方法来更新页码并调用update_list_view方法。update_list_view方法使用当前页码和页大小从模型中获取数据,并将其设置为QListView的模型。
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