Filtering in Virtual mode

[Jonsafi]

Hello,

am using the nice TVirtualModeData
and successfully use

Code: Select all

 procedure GetCell(Sender:TObject; const AColumn:TColumn; const ARow:Integer; var AValue:String);

 

to populate the data. Would like to add a filter to a certain column,
so that the whole row gets hidden.
So obviously, the following doesn't work since the row gets included with blank values..

Code: Select all

if AColumn.Index = column_i Then
Avalue := '';

Is there any way to easily cut off a whole row from the data (prevent it from
being displayed), which has been created normally like so:

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 // Create data, with 10 columns, lots of rows, (optionally: a default column width = 60)
 
Data:=TVirtualModeData.Create(10,20000,60);

Much obliged for your kind help,
Sami

[Yeray]

Hello,

You should be better removing the data instead of trying to hide a row.
The easiest way to hide a row I found would be to set a very small height to it. Ie:

Code: Select all

  TeeGrid1.Rows.Heights[4]:=1/Power10(10,10);

[Jonsafi]

OK, thanks a lot, hiding seems like a nice and quick solution.
May be in a future release filtering support will be available.
Take care,
Sami

[Yeray]

Hello,

Another alternative would be to filter the datasource connected to the grid.