Draw "red squiggly line" in CHtmlEditCtrl

Question

I am working on building spellchecking functionality into my app which currently uses MFC's CHtmlEditCtrl control.

Is there a way of drawing one of those "red squiggly lines" that you see under spelling errors on the HTML control, underneath the word that I detect to be a spelling error?

The only way I can think of is to use the actual HTML to apply this style, and then strip it out upon the email being sent. This seems rather messy, as if the user starts applying underline styles to the text they could interfere with it.

Is there a way of doing this with drawing?

Thanks in advance.

Answer 1

The interface you want is IHTMLRenderStyle. You pass this, once filled in, to the AddSegment method of the of the IHighlightRenderingServices interface. Here's an example in (gasp) VB. I've done it in C++, years ago now though, and it worked nicely.