[Mono-bugs] [Bug 416058] ErrorProvider Icons Drawn Incorrectly When Embedded Within TabControl

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Fri Aug 29 15:44:45 EDT 2008


User andyhume32 at yahoo.co.uk added comment

--- Comment #4 from Andy Hume <andyhume32 at yahoo.co.uk>  2008-08-29 13:44:44 MDT ---
Created an attachment (id=236383)
 --> (https://bugzilla.novell.com/attachment.cgi?id=236383)
Repro -- bug-416058_Test14_ContainerControl.cs

Attached is a modified version of Jonathan's sample that shows the problem. 
The crucial line is "ep.ContainerControl = this;".  With it the icons are
apparently then incorrectly drawn relative to the form and not to each
control's parent (the tabpage).

MSDN says for the ContainerControl property:
  Typically, this is the Form the data-bound controls reside on.

So should it be used *solely* for data-binding purposes
(ContainerControl.BindingContext etc), and be ignored completely for

It would explain why we've had problems with NRE bugs related to it! :-'(

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