The two attached examples in the attached zip file are candidates for the MASM64 library. They only differ slightly, the link button responds on the first down click as is normal for a link, the text button behaves like a normal button that responds on the mouse up click. The link button would normally be used with an underline font although this is not necessary, the text button would not normally be used with an underlined font.
Both support text colour change, font change and alignment change, the text button also supports text character spacing but it would rarely ever be used. I have not yet done the documentation for them (I hate writing documentation) but that will come as get the time to do so.