Marcos,

> First, I'm using IBO 4.8.7 with Delphi 2007 and Firebird 2.1.3.
>
> In my form I have a TIB_Checkbox control linked to a datasource and the
> linked
> field is BOOLEAN. And "ColumnAttributes => Field - Boolean, True Text =
> 'Y',
> False Text = 'N'".
> This control is in a tabsheet (2) of a pagecontrol.
> When TIB_Query.Cancel is fired the following message appears:
>
> "Cannot focus a disabled or invisible windows".
>
> But this happen only when the cursor is over a register where the field
> BOOLEAN is True (Y).
>
> What is wrong ?

I'd really need to see more details to figure it out.

The callstack would help.

Probably the best thing to do is to send me a sample app of the problem.

Jason Wharton