Geoff, you are right, as usual.
I have done something wrong, but now it works and CanEditShow is exactly,
what I have been looking for. Thanks.

Guido

Geoff Worboys wrote:

> > > overriding CanEditModify and/or CanEditShow (from TCustomGrid).
> >
> > No, this doesn't work. I have overriden both Functions with
> > Result:=false, but nothing changes.
>
> Hmmm, thats a pity. Not sure why this would not work, in
> VCL\grids.pas...
>
> procedure TCustomGrid.UpdateEdit;
> <snip>
> begin
> if CanEditShow then
> begin
> <snip>
>
> UpdateEdit is called by ShowEditor and the code seems to imply that
> nothing will happen if CanEditShow returns false. Perhaps you could
> try a break point in your override to see if it is ever called, or
> perhaps a break point in the
>
> VCL\grids.pas
> procedure TInplaceEdit.Move(const Loc: TRect);
>
> which should be called whenever the inplace editor is shown. This may
> let you discover where the call is coming from that is bypassing the
> call to CanEditShow.
>
> > I had another idea, when the dataset is PreventEditing:=true, I
> > set the Grid.readOnly:=true, but I haven't found the event, to
> > react on changes to the dataset. I tried SysStateChanged, but
> > this doesn't work for me. Any ideas
>
> Not sure. Again I thought that overriding YourGrid.SysStateChanged
> would do it. See how you go investigating the above suggestion and if
> that does not work we will come back to this.
>
> Geoff Worboys
> Telesis Computing
>
>
>
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