[SOLVED] Grid colcount vs columns.count
lazarus / 31-LCL

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BigChimp · 2012-08-28 14:18

I've edited the wiki grids article to be more clear on the difference
between colcount and columns.count:
http://wiki.lazarus.freepascal.org/Grids_Reference_Page#property_Colum
ns

However, I think the descriptions must surely be reversed: having
Columns.Count represent the number of custom Columns seems to make
sense; ColCount presumably only contains the count of normal columns.

Could a Lazarus/grids guru confirm/correct this if necessary?

Thanks,
BigChimp

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ludob · 2012-08-28 14:42

AFAIK when using columns TCustomGrid.ColCount = TCustomGrid.FixedCols
+ TCustomGrid.Columns.Count

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BigChimp · 2012-08-28 14:47

From the article - some selective quoting:
QuoteLazarus include the property '''columns''' [..] used to add
custom columns. Custom columns are fixed column objects that
'''replace''' the standard non-fixed grid columns.
So there are the following types of column:
- normal columns: non-fixed
- grid.columns:a sort of fixed column object that is custom
- grid.fixedcols: presumably some other kind of fixed column
Does this seem about right?

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Blaazen · 2012-08-28 14:53

QuoteSo there are the following types of column:
- normal columns: non-fixed
- grid.columns:a sort of fixed column object that is custom
- grid.fixedcols: presumably some other kind of fixed column
Does this seem about right?

Yes, but they are never all three at the same time.
You can have fixed+normal columns
OR fixed + grid.columns

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ludob · 2012-08-28 15:01

The easiest representation is:
- fixed cols: cols that can not be scrolled
- scrollable cols:
    - managed by TCustomGrid: number of cols=colcount - fixedcols
    - managed by user with columns: number of cols = columns.count

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BigChimp · 2012-08-28 15:05

Thanks guys... pls feel free to update the wiki if you want to.
Edit: actually: could you please have a look and correct where
necessary? Thanks.

The depiction of tcustomgrid.column as a "fixed column object" is a
bit misleading then... it is a fixed object that represents a column
but can be scrollable

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jesusr · 2012-08-28 19:50

I modified the text, please check and comment if anything should be
changed.

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BigChimp · 2012-08-29 06:56

Thanks Jesus, at first glance that looks very clear!