复选框在QTableView的标题单元格 [英] Checkbox in a header cell in QTableView
问题描述
我想有一个简单的列标题,其中有一个复选框可以选择/取消选择QTableView中的所有行。单击标题中的复选框可以选择或取消选择所有行。
I want to have a simple column header with a checkbox that selects/ deselects all rows in a QTableView. Clicking the check box in the header causes either to select or deselect all rows.
>
当我想在表格单元格中添加一个复选框时,我必须在所需的模型索引的数据(..)中返回Qt :: CheckStateRole的检查状态下面。
When I want to add a check box in a table cell, I have to just return the check state for the Qt::CheckStateRole in the data(..) for the required model indices as below. This is working as expected.
QVariant MyModel::data( const QModelIndex & rIndex, int iRole) const
{
...
if (iRole == Qt::Qt::CheckStateRole)
{
return checkstate;
}
}
但是当我想添加复选框在标题单元格中,上述方法不工作。 Hear是我的示例代码。
But when I want to add a checkbox in a header cell, the above method is not working. Hear is my sample code.
QVariant MyModel::headerData( int iSection, Qt::Orientation eOrientation, int iRole) const
{
...
if (iRole == Qt::CheckStateRole)
{
return checkstate;
}
}
QTableView不调用headerData )函数在我的模型与Qt :: CheckStateRole,因为它与data()函数。
The QTableView does not call headerData() function in my model with the Qt::CheckStateRole, as it does with data() function.
为什么会出现这种情况?如何通过只修改我的自定义表模型在标题单元格中插入复选框?
Why is this behavior? How can I insert a check box in a header cell by only modifying my custom table model?
(我不想为此目的创建自定义QTableView或QHeaderView)
(I do not want to create a custom QTableView or QHeaderView for this purpose)
推荐答案
你不能这样做 - 默认情况下Qt不支持标题中的复选框。您可以阅读 https://wiki.qt.io/Qt_project_org_faq#How_can_I_insert_a_checkbox_into_the_header_of_my_view.3F for更多信息及其实现使用自定义 QHeaderView
You cannot do it - Qt doesn't support check boxes in headers by default. You can read https://wiki.qt.io/Qt_project_org_faq#How_can_I_insert_a_checkbox_into_the_header_of_my_view.3F for further information and its realization using custom QHeaderView
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