Home » Community » Newbie corner » tracking GridCtrl selection
| tracking GridCtrl selection [message #32709] |
Thu, 02 June 2011 19:01  |
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bushman
Messages: 134
Registered: February 2009
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Experienced Member |
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Please bear in mind that I'm totally newbie in using
GridCtrl, when considering the folowing questions:
Is there a way to track selections in a GridCtrl?
I mean, some method like
Point GetSelectionBegin()
or
, which returns the (col, row) coordinates for the
selection begin and selection end, respectively.
Unless I'm mistaken, I didn't see any GridCtrl method
that does it, while browsing GridCtrl with Assist.
Apparently, the only public methods related to selection
tracking are GetSelectedCount(), GetSelectedItemsCount()
and GetSelectionData(), which I assume return the number of
rows selected, the number of cells selected and the
selected data, respectively, allthough I do not have
the slightest idea on how to use the third one to retrieve
selected data.
BTW, method GetSelectedItemsCount() returns different
results to the selection count, depending whether you do either
a CTRL+LMB or a Shift+LMB selection (they differ by 1).
In other words, how can I walk through a selection path in GridCtrl,
checking each selected cell content, cell state, etc.,
one by one, once
a user finishes making a selection with the mouse?
Help appreciated, thanks in advance
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| Re: tracking GridCtrl selection [message #32765 is a reply to message #32709] |
Tue, 07 June 2011 08:21  |
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You can iterate over all cells:
for(int i = 0; i < grid.GetCount(); i++)
for(int j = 0; j < grid.GetColumnCount(); j++)
{
if(grid.IsSelected(i, j))
{
... do anything ...
}
}
for checking rows only or you can use this macro
FOREACH_SELECTED_ROW(grid)
{
PromptOK(Format("Selected row: %d", grid.GetCurrentRow()));
... do my code...
}
As you noticed you can also retrieve number of selected rows/cells:
int selectedRows = grid.GetSelectedCount();
int selectedCells = grid.GetSelectedItemsCount();
| Quote: |
CTRL+LMB or a Shift+LMB selection (they differ by 1)
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Thanks. I'll try to fix that.
There are no GetSelectionBegin/End() methods (what should they return if there are multiple selections?)
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| Re: tracking GridCtrl selection [message #32964 is a reply to message #32765] |
Sun, 26 June 2011 12:46 |
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| Quote: |
CTRL+LMB or a Shift+LMB selection (they differ by 1)
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Selected items counter was indeed too small (3 insted of 4 for example) if user clicked on cell and then clicked on another cell holding control key. Now this is fixed. I'm not sure if that fixes your case so please check and if something is still wrong please write how to reproduce it step by step.
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