Yong wrote:

I am using the Dillo on an embedded device for web browsing. Since this device does not support mouse or touchscreen, I have to use the keyboard(or some buttons). I found I cannot set the focus on these links using tab keys( Dillo 2.2-rc1).

If there any key configuration settings to set the tab key?

Not currently.

If not, I want to modify the source code to add this function,

Great!

is there any example or related patches for reference?

I think the way to make this work would be something like: - borrowing from the dw/findtext.cc iteration code. - checking when style->x_link != -1 or you're currently on an embedded form widget.