[ wxwindows-Bugs-1217401 ] wxGrid selection not working

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Bugs item #1217401, was opened at 2005-06-09 06:08
Message generated for change (Comment added) made by mmacleod
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Category: wxGrid
Group: None
Status: Open
Resolution: Invalid
Priority: 5
Private: No
Submitted By: Brian Wallis (bwallis42)
Assigned to: Nobody/Anonymous (nobody)
Summary: wxGrid selection not working

Initial Comment:
When I create a grid and register an event handler  
for a right button mouse click and also a 5 second  
timer. I never get any rows, cols or cells returned  
as selected regardless of how many I select.  
  
I've attached the simple example showing this  
behaviour.   
  
This is running on Gentoo linux (kernel 2.6.11,libc 
2.3.4), xorg 6.8, python 2.3.5, wxPython 2.4.2.4 or 
2.6.0.0 (tried both) and wxGTK 2.4.2 and 2.6.0. 
 

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Comment By: Malcolm MacLeod (MaNI) (mmacleod)
Date: 2007-08-08 07:39

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Ran into the same/similar issue here.
With wxGrid::wxGridSelectRows enabled if user clicks on a cell then
wxGrid::GetSelectedRows() does not return the selection, If he clicks on
the row heading then it does.

While it can be worked around (which is what I have done for now) I agree
with bwallis42 on both the issues he identified below.
I also think that this behaviour is both inconsistent and counter
intuative.

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Comment By: Brian Wallis (bwallis42)
Date: 2005-06-10 00:57

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OK, had another play with it. The GetSelectionBlock... 
calls are useful and will help me work around the 
problem in my real app, thanks for that. 
 
But I still think it is inconsistent. If I set the grid selection 
mode to wxGridSelectRows I get different results for 
GetSelectedRows and GetSelectionBlock depending on 
whether I select the rows in the title column or in the 
body of the grid. If I select usingthe title column then I 
get a result in GetSelectedRows but *not* for 
GetSelectionBlock. If I select the rows in the body of the 
grid then it is the other way around. Selecting the whole 
table with the top left cell also returns no rows for 
GetSelectedRows. 
 
If I set wxGridSelectColumns mode then I get equivalent 
results. 
 
What this means is that I now think that there are two 
issues: 
1) the behaviour should be the same when you have the 
selection mode set to rows or columns and select via 
either the title or body 
2) GetSelectionBlock... should return the selection area 
when you select using the row or column title (it does if 
you select the whole table with the upper left cell) 

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Comment By: Robin Dunn (robind)
Date: 2005-06-09 15:52

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There are different kinds of selections, so the results of
your test depend on how you make the selection.  If you
click or drag across the row labels then you will have row
selections, if you drag across the col labels then you will
have column selections.  If you select one or more single
cells (by ctrl clicking on them) then your test will report
selected cells.  The one thing you are not testing for is
range of cells selections, which is what you get when
dragging across cells.  You can get the range(s) of selected
cells with GetSelectionBlockTopLeft/GetSelectionBlockBottomRight


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