The problem I explained was mine. I manage the dsDataChange and gridCellClick procedures. In the dsDataChange code I was giving focus to another control, removing focus from the LookupCombo so causing its button to be hidden. This action is cell dependent and should have been done in the gridCellClick procedure. With this change I have the desired behaviour. IBO works correctly here, the error was mine.

--- In IBObjects@yahoogroups.com, "russellbelding" wrote:
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> Thanks for the hint Helen .. below
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> --- In IBObjects@yahoogroups.com, Helen Borrie wrote:
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> > At 04:59 p.m. 2/02/2013, you wrote:
> > >Using IBO 4.9.9 in D2010 and Firebird 2.5.x
> > >I have a TIB_LookupCombo (LC) for a text field inside a TIB_Grid (Grid).
> > >The combo box is in col 2. When a single mouse click is made to col 2 the cell selected is painted. A second click is required to show the combo box's dropdown button. A click on the button will drop down the selection list.
> > >
> > >I would like the dropdown button to appear when a col 2 cell is clicked, to show the user there is something here to be selected.
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> > >I have tried several things without success.
> > >In Grid AlwaysShowEditor=True, EditLinksAuto=True. I know AlwaysShowEditor is for BlobFields.
> > >
> > >In LC showButton returns True and seems to do nothing visible.
> > >
> > >Any suggestions for me from fellow users?
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> > Is the dataset certain to be in an editing mode (insert/edit) at the time? The dropdown is activated only in those modes...so possibly your solution would be to test dsEditing (and/or dsInserting, if needed) in the initial click event and put the dataset into Edit if it's false.
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> > Helen
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> The Grid uses datasource ds which uses dataset qr, a TIB_Query.
> grid <-- ds <-- qr.
> The ds changes state when clicking from one grid row to another.
> I can push the ds into edit mode using ds.Edit.
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> When on a row and I click to the column of the row with the lookupcombo LC the LC button appears immediately. That is desireable and what I want.
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> When I click into the LC column on another row I need to click into the column a second time to get the LC button to appear. This is the (minor) problem.
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> I know the col number of the LC column (2). In the grid.CellClick event I can force ds.Edit when this col is entered. But this does force the LC button to show. A second click is required.
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> I guess managing events for the grid, ds and qr needs more care than I am giving it to date. An experiment shows my code is causing the problem. I use ds.DataChange. If I exit this procedure immediately upon entering it I get the desired behaviour. So I need to sort this out.
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> Russell
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