[Lazarus] Caret is not blinking in Unix

[Mehmet Erol Sanliturk]

On Fri, Apr 5, 2013 at 4:32 AM, Martin <lazarus at mfriebe.de> wrote:

>  On 05/04/2013 12:20, Mehmet Erol Sanliturk wrote:
>
>  On each key press , the pressed character appears on the form area , but
> caret is not blinking even one time .
>
>
> Well the below is all I know. You may have to debug it yourself.
>
> Only other think that comes to mind (but IIRC that is mainly required for
> windows)) is that you need to hide the caret at the start of your paint
> handler, and show it again at the end of the pain handler. Also do not
> Create a new caret in the paint handler (again Windows).
>
> Does it blink in the IDE? Then you can try and look at SynEdit to find out
> how it is done there. (Search FScreenCaret).
>
>
>
> On Fri, Apr 5, 2013 at 4:14 AM, Martin <lazarus at mfriebe.de> wrote:
>
>> On 05/04/2013 12:04, Mehmet Erol Sanliturk wrote:
>>
>>>
>>> What can be done to make the caret blinking in Unix ?
>>>
>>
>> On WIndows the caret is drawn by the OS. This includes hiding it. On
>> windows (afaik) this is done by inverting pixel colors. Neither drawing,
>> nor hiding does require the Control to paint.
>>
>> AFAIK on linux, the caret is drawn by the Widgetsetcode provided by
>> Lazarus. And hiding the caret, is done by invalidating the area, and
>> therefore only effective, if the control repaints itself.
>>
>> I do not know what goes wrong in your case, but here are some pointers:
>> - Check that your control receives regular paint messages, and that it
>> does actually paint the area. (It will get a paint messages for a small
>> clip rect only, and must paint into that clip rect.
>> - If no paint messages are received I have no idea, but maybe it is timer
>> related (I haven't looked that deep, but I guess the caret is triggered by
>> a timer.
>>
>
>
> --
>


Lazarus IDE caret is blinking very well .

Previously I had searched SynEdit sources , but I could not find any place
to study .

During next days I will search your suggested phrase .

Thank you very much .

Mehmet Erol Sanliturk
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