Stringgrid: How to select multi rows (row1 +row5 +row23) and drag-drop select ?

[Fred vS]

Hello Lazarus lovers .

I have trouble with stringgrid.
Question 1 :
How can i select multiple rows in a StringList ?
With shift + left mouse i can select a range (row1 + row2 + row3 +...) but how to select particular rows (row1 + row7 + row10 +...) ?
Usualy i use Ctrl + left mouse but it does not work.

I use this parameters :

extendedselect := true ;
option.gorowselect := true;
option.gorangeselect := true;
dragmode := automatic ;

Question 2 :
With that multi selection, how to drag+drop the selection ? Witch button or shift + click i have to use for draggin ?
When i drag the selection into a accepted target object, after enddrag the selection of stringgrid source is changed
(from first row to initial selection).

I have tried with drag manual but... i loose.

Thanks for your help.    

[Blaazen]

I am afraid that TStringGrid cannot do it. Maybe some third party component based on TStringGrid. But unfortunally KGrid also still does not support it - I found some discussion from october (2009) and author said that possibly in next version will be this function implemented. So try contact him and ask for details.
I have no other solution for you  .
B.

Edit: link on KGrid http://www.tkweb.eu/en/delphicomp/kgrid.html

[faber]

StringGrid Selection is TGridRect so it's only a range.
If you want to more then one selected area you can use own procedures, like:
 - OnMouseDown if (liCol = 0) and (Key=Ctrl) ... then multi_rows[liRow]:=true
 - OnDrawCell if multi_rows[liRow] then canvas.Brush.Color:=SelectionColor;
 - "procedure DoCopyToClipboard; override;" and modify the procedure to include an array multi_rows

[Fred vS]

Thanks Blaazen, thanks faber.

That strange because, with filstbox and filelistbox, with multiselect := true, it works like charms.

PS Hi faber, i gonna try your idea, thanks.

Bye

[wp]

Multi-selection of non-adjacent rows is possible by enabling multiselect mode (StringGrid.RangeSelectMode := rsmMulti), rowselect and rangeselect (StringGrid1.Options := StringGrid1.Options + [goRowSelect, goRangeSelect]).

See attached demo.

[EDIT]
To post to which I respond here is suddenly gone now...

[marcio2003]

Hi,
Sorry because I erased my previous post, I think create new post will be better, but now we go here.
Thanks for fast reply, but it's no functionall. Is only a view efect.
We haven't access to rows selected list for work and unmark a selected row not work.
Sorry my bad english.
What can we do.
Congratulations Lazarus Team.

Win_7 - Laz_1.6.0

[wp]

You mean a rowselect like in Excel where you click on a row header? No, this is not possible. TStringGrid does not have a well-defined row header like Excel sinc FixedCols can be zero.

Yes, row-select is only a visual effect: The selection is by cell, but the selection rectangle is extended to cover the entire row.

The multiselect operation should be revisited. For example, a selection cannot be undone by clicking a selected cell a second time. I'll have a look at it when I have time.

[marcio2003]

Thanks,
We go working too.
God bless.