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Showing content from https://wxpython.org/Phoenix/docs/html/wx.BookCtrlEvent.html below:

wx.BookCtrlEvent — wxPython Phoenix 4.2.4a1 documentation

This class represents the events generated by book controls ( wx.Notebook, wx.Listbook, wx.Choicebook, wx.Treebook, wx.aui.AuiNotebook).

The PAGE_CHANGING events are sent before the current page is changed. It allows the program to examine the current page (which can be retrieved with wx.BookCtrlEvent.GetOldSelection ) and to veto the page change by calling wx.NotifyEvent.Veto if, for example, the current values in the controls of the old page are invalid.

The PAGE_CHANGED events are sent after the page has been changed and the program cannot veto it any more, it just informs it about the page change.

To summarize, if the program is interested in validating the page values before allowing the user to change it, it should process the PAGE_CHANGING event, otherwise PAGE_CHANGED is probably enough. In any case, it is probably unnecessary to process both events at once.

Inheritance diagram for class

:

wx.aui.AuiNotebookEvent

__init__

Constructor (used internally by wxWidgets only).

GetOldSelection

Returns the page that was selected before the change, NOT_FOUND if none was selected.

GetSelection

Returns the currently selected page, or NOT_FOUND if none was selected.

SetOldSelection

Sets the id of the page selected before the change.

SetSelection

Sets the selection member variable.

class wx.BookCtrlEvent(NotifyEvent)¶

Possible constructors:

BookCtrlEvent(eventType=wxEVT_NULL, id=0, sel=NOT_FOUND,
              oldSel=NOT_FOUND) -> None

This class represents the events generated by book controls (wxNotebook, Listbook, Choicebook, Treebook, AuiNotebook).

Methods¶

__init__(self, eventType=wxEVT_NULL, id=0, sel=NOT_FOUND, oldSel=NOT_FOUND)¶

Constructor (used internally by wxWidgets only).

Parameters:

• eventType (wx.EventType)

• id (int)

• sel (int)

• oldSel (int)

Return type:

None

GetOldSelection(self)¶

Returns the page that was selected before the change, NOT_FOUND if none was selected.

Return type:

int

GetSelection(self)¶

Returns the currently selected page, or NOT_FOUND if none was selected.

Return type:

int

Note

under Windows, GetSelection will return the same value as GetOldSelection when called from the EVT_BOOKCTRL_PAGE_CHANGING handler and not the page which is going to be selected.

SetOldSelection(self, page)¶

Sets the id of the page selected before the change.

Parameters:

page (int)

Return type:

None

SetSelection(self, page)¶

Sets the selection member variable.

Parameters:

page (int)

Return type:

None

Properties¶

OldSelection¶

See GetOldSelection and SetOldSelection

Selection¶

See GetSelection and SetSelection

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