# RE: usage of height and width in fb\_var\_screeninfo

- From: Jingoo Han \<hidden\>
- Date: 2012-03-26 08:15:17 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2012/03/13462731
- Thread: https://ratatoskr.run/linux-fbdev/2012/03/13462729/t.md

```text
On Thu, Mar 22, 2012 at 8:53, Jun Nie [ref] wrote:
> Does anyone happen to know the usage of below member in
> fb_var_screeninfo? I do not know whether mm stand for geometry size or
> memory, can not find its usage in any driver neither. We considering
> to use it as zoomed size.
> 
> struct fb_var_screeninfo {
>         __u32 height;                   /* height of picture in mm    */
>         __u32 width;                    /* width of picture in mm     */
> 

Yes, right. Both thins are geometry sizes of LCD panel in millimeters.
Some OS platform needs these parameters.
Good luck.

Best regards,
Jingoo Han


```