Zhang Xiaofei 写道:
> Hi all,
>
> I found a phenomenon in Draw, and I'm unsure if it is a defect:
>
> 1. Draw a dimensional line;
> 2. Double click the text on dimensional line so that it gets focus;
> 3. Press "Home" key to move the cursor to the start of the text, and the
> display goes like below:
>
> ^15cm ("^" for the cursor);
>
> 4. Press right arrow key, ONCE.
>
> After the 4th step, the cursor is supposed to be located between the
> digits and the measurement unit like:
>
> 15^cm
>
> but it does not, until "Home" is press again.
>
Sorry for the careless mistake here, I meant until right arrow key is
pressed again.
> A similar phenomenon occurs in the end of the text, too. When "Home" ->
> "Left Arrow" key is pressed.
>
> Both the phenomena can be repeated.
>
> It seems to me that there is a pair of invisible characters in the start
> and the end of the text. Like:
>
> #15cm# ("#" for the invisible chars).
>
> I got this conjecture because the assume-to-exist chars can be deleted
> by "Home" -> "Delete" and "End" -> "Backspace". After these sequences
> the phenomena disappear.
>
> The pair can be deleted, their font size and other formats can be
> modified. ("Home" -> "Shift"+"Right" or "End" -> "Shift"+"Left" to
> select them), but it seems they can not be copied and pasted.
>
> Could someone please tell me:
> 1. Is this is a defect?
> 2. If not, what's the purpose to put them there?
> 3. Which part of source code is related to this?
>
> Thanks very much in advance.
>
> Regards,
> Felix.
>
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