Hello.
The official documentation for version 2.8 of wxWidgets [1] presents a
function called GetCurrentPage that does just that.
However, that function is not directly translated into wxHaskell.
Instead, you must use notebookGetSelection [2]. This function returns
an index of the currently selected tab, starting at zero.
Example:
-- basic frame
f <- frame []
p <- panel f []
-- a notebook
n <- notebook p []
-- some tabs
tab1 <- panel n [text := Tab 1]
tab2 <- panel n [text := Tab 2]
tab3 <- panel n [text := Tab 3]
-- example function to get selected tab:
let selected = do
index <- notebookGetSelection n
-- do something with index
In this example, if tab2 is the currently active tab,
notebookGetSelection n should return the value 1.
Let me know how it worked out for you.
Regards,
Paulo M. Pocinho
--
[1] http://docs.wxwidgets.org/2.8/wx_wxnotebook.html#wxnotebookgetcurrentpage
[2]
http://wxhaskell.sourceforge.net/doc/Graphics-UI-WXCore-WxcClassesMZ.html#v%3AnotebookGetSelection
On 19 October 2011 12:26, Johannes Waldmann
<waldm...@imn.htwk-leipzig.de> wrote:
> Dear all,
>
> I am using a "notebook" that has several tabs,
> each one with a panel.
>
> How could I check whether a tab (panel)
> is currently visible (selected)?
> Is there some attribute or selection event?
>
> Because I want to avoid updating the invisible tabs.
>
> Thanks - J.W.
>
>
> ------------------------------------------------------------------------------
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>
------------------------------------------------------------------------------
All the data continuously generated in your IT infrastructure contains a
definitive record of customers, application performance, security
threats, fraudulent activity and more. Splunk takes this data and makes
sense of it. Business sense. IT sense. Common sense.
http://p.sf.net/sfu/splunk-d2d-oct
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