[SOLVED] SynEdit hide square selection

[SaraT]

Hello, Please, take a look at the attached image.
Is it possible to hide the square selection in SynEdit control while selecting text?

I did not find anything in demo files, but maybe someone knows about this.
Many thanks.

[Martin_fr]

What OS / Widgetset do you use?

I have never seen such a square, when I select anything in SynEdit.

[SaraT]

What OS / Widgetset do you use?

I have never seen such a square, when I select anything in SynEdit.

Hi,
This component was tested on Windows 7 and 11 and it is the same result.

[Martin_fr]

Does it also happen when selecting source code in the IDE?

----
To make sure, I understand correct: When you select text, a "square" (rectangle) appears (that was not there before).
On corner of the rectangle follows the mouse-cursor?
This is what you would use to select in "paint" or other image-painting software?

---
You have a new application. And when you place a synedit on the empty form, and then run it => then it will happen? (i.e. paste some text, select and the square appears)


And it does not happen if you select text in notepad, or office/word app?

[SaraT]

Does it also happen when selecting source code in the IDE?
...

Hi, yes, the square follows the mouse while I am selecting text.
This square appears in original demos too.
I have not changed anything. It a square by default only in this component :/

This square is not shown in Lazarus IDE in source code or any other editor.

[Martin_fr]

I am on Windows 10. I will have a look at another Win version later.

The SynEdit component doesn't have code to even paint such a "square". So whatever it is, it is a bug somewhere.
Hence, there is no option to switch it.
And hence, to fix it, I must be able to reproduce it.

Also, the source editor is a SynEdit too. So it's curious it is ok there (no square)....

When you get the square, and you move the mouse over the gutter (the line numbers) => Does the square follow all the way?
What if you move the mouse (with button down) outside the SynEdit => does the square follow (extend to outside the SynEdit)?

[Martin_fr]

Also what happens if you press the mouse button over a bit of empty form (not a synedit, not any other component), hold the button and move the mouse. Square or no square?

[AlexTP]

Seems the person was using ATSynEdit. In ATSynEdit, to turn off the selection rect, use property: OptShowMouseSelFrame .

[balazsszekely]

Seems the person was using ATSynEdit. In ATSynEdit, to turn off the selection rect, use property: OptShowMouseSelFrame .

Great you figured out, if true, is a very important detail omitted by OP.

[VisualLab]

I checked the behavior of the TSynEdit component on my computer. When selecting text, lines select correctly, no frame appears. I'm using Lazarus 2.2.4, Windows 10 LTSC.