pyside qcombobox hide item
from PySide2 import QtWidgets, QtCore comboBox.setItemData(1,QtCore.QSize(0,0),QtCore.Qt.SizeHintRole)
我们也可以使用其它role去改变item的一些属性：参考链接：https://pyside.github.io/docs/pyside/PySide/QtCore/Qt.html
PySide.QtCore.Qt.ItemDataRole
Each item in the model has a set of data elements associated with it, each with its own role. The roles are used by the view to indicate to the model which type of data it needs. Custom models should return data in these types.
The general purpose roles (and the associated types) are:
| Constant | Description |
|---|---|
| Qt.DisplayRole | The key data to be rendered in the form of text. ( PySide.QtCore.QString ) |
| Qt.DecorationRole | The data to be rendered as a decoration in the form of an icon. ( PySide.QtGui.QColor , PySide.QtGui.QIcon or PySide.QtGui.QPixmap ) |
| Qt.EditRole | The data in a form suitable for editing in an editor. ( PySide.QtCore.QString ) |
| Qt.ToolTipRole | The data displayed in the item’s tooltip. ( PySide.QtCore.QString ) |
| Qt.StatusTipRole | The data displayed in the status bar. ( PySide.QtCore.QString ) |
| Qt.WhatsThisRole | The data displayed for the item in “What’s This?” mode. ( PySide.QtCore.QString ) |
| Qt.SizeHintRole | The size hint for the item that will be supplied to views. ( PySide.QtCore.QSize ) |
Roles describing appearance and meta data (with associated types):
| Constant | Description |
|---|---|
| Qt.FontRole | The font used for items rendered with the default delegate. ( PySide.QtGui.QFont ) |
| Qt.TextAlignmentRole | The alignment of the text for items rendered with the default delegate. ( Qt.AlignmentFlag ) |
| Qt.BackgroundRole | The background brush used for items rendered with the default delegate. ( PySide.QtGui.QBrush ) |
| Qt.BackgroundColorRole | This role is obsolete. Use BackgroundRole instead. |
| Qt.ForegroundRole | The foreground brush (text color, typically) used for items rendered with the default delegate. ( PySide.QtGui.QBrush ) |
| Qt.TextColorRole | This role is obsolete. Use ForegroundRole instead. |
| Qt.CheckStateRole | This role is used to obtain the checked state of an item. ( Qt.CheckState ) |
| Qt.InitialSortOrderRole | This role is used to obtain the initial sort order of a header view section. ( Qt.SortOrder ). This role was introduced in Qt 4.8. |
Accessibility roles (with associated types):
| Constant | Description |
|---|---|
| Qt.AccessibleTextRole | The text to be used by accessibility extensions and plugins, such as screen readers. ( PySide.QtCore.QString ) |
| Qt.AccessibleDescriptionRole | A description of the item for accessibility purposes. ( PySide.QtCore.QString ) |
User roles:
| Constant | Description |
|---|---|
| Qt.UserRole | The first role that can be used for application-specific purposes. |
For user roles, it is up to the developer to decide which types to use and ensure that components use the correct types when accessing and setting data.