[Lazarus] Win32 TPenStyle psDot is ugly

[Nigel Lightfoot]

Line styles are dependent on the ‘Cosmetic’ and ‘EndCap’ settings. For Cosmetic pens with 1-pixel wide lines the dots are elongated. For wider lines it is possible to get round dots by using the ‘pecRound’ cap style.

If you want to get 1 pixel dots followed by 1 pixel spaces then this works for dotted Geometric (Cosmetic = false) pen but only looks OK for horizontal and vertical lines. Guess this is good for grid cell borders.

Regard,
Nigel

> On 29 May 2019, at 22:10, AlexeyT via lazarus <lazarus at lists.lazarus-ide.org> wrote:
> 
> According to MS docs, psDot style must give nice looking 1 pixel dots. https://docs.microsoft.com/en-us/windows/desktop/gdi/pen-style
> 
> Lazarus creates pen via Widgetset's ExtCreatePen which calls Win32 ExtCreatePen.
> 
> reality: If I set psDot to StringGrid.GridLineStyle, I get ugly dots: each of about 3 pixels fragments. psDash is ugly too: dashes are very long.
> 
> Why?
> 
> -- 
> Regards,
> Alexey
> 
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