Re: [19/44] user32: Increased area for scrolling via mouse drag outside scrollbar

[Rob Shearman]

Dylan Smith wrote:
> +  /* Distance beside or past the ends the scrollbar for the mouse can be dragged
> +   * away from scrollbar and still be considered in the scrollbar. */
> +#define SCROLL_DRAG_ZONE_PADDING_BESIDE    138
> +#define SCROLL_DRAG_ZONE_PADDING_PAST_END  34

This should be a proportion of the scrollbar width/height instead of
absolute values in pixels.

-- 
Rob Shearman

[19/44] user32: Increased area for scrolling via mouse drag outside scrollbar

[Dylan Smith]

What basis is there for it being proportional to the width/height of the
scollbar?  Is there a test I can run, or a use case that I can follow to
observe this behaviour?

The way it was implemented before was not consistent with Windows either.  I
tried with horizontal and vertical scrollbars of various lengths, and with
different thumb sizes.  However, I don't know how to make the scrollbar
wider.

On Wed, Jun 18, 2008 at 2:43 AM, Rob Shearman <robertshearman(a)gmail.com>
wrote:
> Dylan Smith wrote:
> > +  /* Distance beside or past the ends the scrollbar for the mouse can be
> > dragged
> > +   * away from scrollbar and still be considered in the scrollbar. */
> > +#define SCROLL_DRAG_ZONE_PADDING_BESIDE    138
> > +#define SCROLL_DRAG_ZONE_PADDING_PAST_END  34
>
> This should be a proportion of the scrollbar width/height instead of
> absolute values in pixels.
>
> --
> Rob Shearman