cxGrid open blob field on row change

I have a blob field in which I keep my pictures. I was wondering how can I have this field open automatically when I click on a row (or on row change ) ??
pic
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senadAsked:
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ThommyCommented:
Simply place a TDBImage on your form and assign DataField and DataSource properties...
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Sinisa VukSoftware architectCommented:
Use dataset event OnAfterScroll and force combo to open (cell click). Try this one:

MyGrid.SetFocus;
MyGridView.Columns[5].Focused := true;
MyGridView.Controller.EditingController.ShowEdit;

Open in new window


But I wouldn't recommend this operation.
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senadAuthor Commented:
Assigning an image component would require me to enlarge the form which is as big as it is.

second suggestion raises :
[DCC Error] Unit1.pas(74): E2003 Undeclared identifier: 'Columns'
[DCC Error] Unit1.pas(75): E2003 Undeclared identifier: 'EditingController'
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ThommyCommented:
You can place TDBImage control on a separate form (image form), which is automatically created

Set AfterScroll event of your ClientDataSet to make image form visible...

procedure TForm1.cds1AfterScroll(DataSet: TDataSet);
begin
  if Assigned(Form2) then Form2.visible:= NOT cds1.FieldByName('YourBlobFieldName').IsNull;
end;

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Geert GOracle dbaCommented:
why not set the column as a preview column ?
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senadAuthor Commented:
where ?
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Geert GOracle dbaCommented:
senad,
if the blob contains a picture ...
add a column of property type image
and set that column as preview column
and also set the preview property visible to true.

image will be shown inside the record
activating the indicator in grid view properties makes it more clear what 1 record is
 grid view images
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senadAuthor Commented:
uggghhh...  comes out ugly. especially if you set autoheight to true. Is there a way to increase the image in the grid without setting the autoheight to true ? why does my picture field end up in the middle of the grid ?
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Geert GOracle dbaCommented:
ugly ? the right or the left skeleton ?
increase ?
the left margin ?

the preview takes up the total width of all columns
you can left/right/center align the pic using the margins
otherwise, use a image column
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senadAuthor Commented:
dont like it ...what I had in mind was to open the blob field automatically when the row gets selected.
not on afterscroll because thats a performance suicide. But I think I will use a dbimage component to
proceed.
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senadAuthor Commented:
thanks for ideas .. I think I will use dbimage...
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