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ArrayCtrl: How can I refresh just one cell that changed? [message #15926]

Fri, 16 May 2008 23:31

jlfranks
Messages: 57
Registered: May 2007
Location: Houston, TX, USA

Member

I'm getting real-time updates that affect the content of only
one cell in an ArrayCtrl.

I modify the cell, and then call Refresh() on the entire ArrayCtrl -- takes too long and UI falls behind.

Is there a way to just refresh the one cell that I changed?

--jlf

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Re: ArrayCtrl: How can I refresh just one cell that changed? [message #16052 is a reply to message #15926]

Sun, 25 May 2008 20:38

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Sure, do not call Refresh Wink

Mirek

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Re: ArrayCtrl: How can I refresh just one cell that changed? [message #16054 is a reply to message #16052]

Mon, 26 May 2008 00:24

jlfranks
Messages: 57
Registered: May 2007
Location: Houston, TX, USA

Member

That's interesting. If I don't call Refresh() on the ArrayCtrl, then the new information does not update.

This behavior is happening when we are getting a real-time update from a data acquisition system that uses PostCallback.
This is dispatched and processed on our UI thread. The callback simply loads the new value into the cell of intest with SetData(row,column,value).

The problem arose because this new data is not being shown.
Using ArrayCtrl.Refresh() made the new information show up
for the new information to be displayed.

That's a big hammer and takes a lot of time. The updates
are comming in at 0.12 seconds, which should not be a problem.

Do you have any idea why this is not updating based on this
additional information?

We are on Linux UPP 2007.1 release at this time.

--jlf

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Re: ArrayCtrl: How can I refresh just one cell that changed? [message #16055 is a reply to message #16054]

Mon, 26 May 2008 00:45

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

Hard to say...

First of all, I recommend trying current linux svn version. A lot of bugfixes happened since 2007.1, it is no impossible this is some bug in Linux CtrlCore, already fixed.

Mirek

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