On Fri, 11 May 2007 22:21:53 +0100
Sam Liddicott <[EMAIL PROTECTED]> wrote:
> Well spotted.
>
> These days such metric gathering should be done lazily and in a way
> that the metrics can be invalidated and lazily regathered again, such
> as when theme font sizes change etc.
Yes.
> Windowed controls should at least defer such stuff until createwnd
> time, but I don't know when plain tcontrol should expect to be able
> to do it. Its not even afe during the first paint as it might not be
> painting to the screen dc.
Can you give an example, where a first paint message is not on the
screen dc?
> Maybe tcontrols auto to have a method called when their parent's
> handle gets created; this wouldn't solve the lazy metrics problem,
> but would give controls a clear and clean place do do such metric
> gathering.
There is ParentFormHandleInitialized.
Mattias
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