Re: Many questions when I drew a line

["Lazy Fox" <lazy fox wu gmail com>]

Thanks for your answer.

 

>2. The bg_color I set in redraw() is useless too. Each time I run the
>application,
>   the background color is different. Looks like random color.

Works fine here on linux.

 

The code I paste here can work fine on your linux?

Each time you run the code, They had same background color?