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MFC / C++: What message indicates that the selection of a CListCtrl has changed?

Posted on 2007-11-16
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Last Modified: 2013-12-14
Hello,

I have a ClistCtrl in a dialog that displays data that can be changed with/are reflected by various form widgets, mostly CEdits. I'd like to catch any MFC messages sent by the CListCtrl that indicate that the user's focus has changed (i.e that they have clicked on a different row of the ClistCtrl), so that I can update the form widgets as appropriate.

How can this be done?

Regards,
Sternocera
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Question by:sternocera
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Expert Comment

by:alb66
ID: 20297806
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Author Comment

by:sternocera
ID: 20297925

BEGIN_MESSAGE_MAP(CBatchAdd, CDialog)
NOTIFY_HANDLER(IDC_LIST_PRODUCTS_ADDED, LVN_ODSTATECHANGED,&CBatchAdd:: OnListSelChanged)
END_MESSAGE_MAP()

This seems to cause all kinds of errors. I guess I got something wrong. What should I do to handle the message?

Regards,
Sternocera
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LVL 19

Expert Comment

by:alb66
ID: 20297968
try this:

NOTIFY_HANDLER(IDC_LIST_PRODUCTS_ADDED, LVN_ODSTATECHANGED, OnListSelChanged)
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Author Comment

by:sternocera
ID: 20297987
Curiously, this causes the following error message:

error C3861: 'NOTIFY_HANDLER': identifier not found

Plus a whole bunch of syntax errors arising from that.

Is this an MFC handler or an ATL handler?

Regards,
Sternocera
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LVL 19

Expert Comment

by:alb66
ID: 20298046
It's an ATL handler.

Try the following:

ON_NOTIFY_REFLECT(LVN_ODSTATECHANGED, OnListSelChanged)

void CBatchAdd::OnListSelChanged( NMHDR *pNMHDR, LRESULT *pResult )
{
      LPNMLVODSTATECHANGE pNMLV = reinterpret_cast<LPNMLVODSTATECHANGE>( pNMHDR );
      ...
}
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Author Comment

by:sternocera
ID: 20298069
alb66,

That will build, but doesn't appear to do anything,

Thanks
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Expert Comment

by:alb66
ID: 20298141
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Author Comment

by:sternocera
ID: 20298171
Aren't these messages only for windows CE?
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Accepted Solution

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alb66 earned 1500 total points
ID: 20298239
No, they are also present in Windows since Windows95

http://msdn2.microsoft.com/en-us/library/bb774845.aspx
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Author Comment

by:sternocera
ID: 20298328
This works for me:

ON_NOTIFY( LVN_ITEMCHANGED, IDC_LIST_PRODUCTS_ADDED, &CBatchAdd::OnListSelChanged)


Thanks,
Sternocera
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