[lazarus] Need your thoughts on Caret

Marc Weustink marc at dommelstein.net
Mon Aug 11 17:22:41 EDT 2003

At 23:38 11-8-2003 +0200, Micha Nelissen wrote:
>Marc Weustink wrote:
>>At 20:56 11-8-2003 +0200, Micha Nelissen wrote:


>>>If you trace code flow you will see that ShowCaret indeed returns false 
>>>most of the time if not always.
>>What is the case, why is it false ?
>>You're not the owner ?

??? The doc's are a bit misty in this, but it looks like if you use 
ShowCaret(hwnd) you are the owner.

>>It has no shape ?
>No, CreateCaret returns true when it's called, but that's only once.

You are creating a Caret with or without bitmap (knowing the SynEdit code i 
gues without)

>>It't is pretty good hidden ?
>If Hide / Show are balanced well, this should not be a problem.
>>>Since this involves more than simply adjusting the win32 interface, I 
>>>ask for your thoughts on this.
>>Why adjusting the interface ?
>It's the win32 api that is quirky on this, I mean the fact that you have 
>to recreate and destroy your caret continously.

Ehm... I think you dont have to worry about that. SynEdit is originally a 
Delphi project where synedit itself creates the caret. The win32 interface 
has nothing else to do than just passing through the calls. So I don't get 
why you are creating carets.


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