At a guess:
LHelp has a TPageControl to display "whatever"
A TPageControl has a Font-Property, which has a Size-Property......
Thanks for the info.
I have been doing some tests. Indeed, I can change the properties of the TPageControl, in this way I can change the letter size of the navigation tree.
The problem is that the web viewer, based on IPRO, is not normal (this I know it), but is governed by a ChMProvider.
After doing some plumbing I have managed to access some properties. The idea was to intercept the HTML content and apply a TiphtmlPanel.SetHtmlFromString (ANSIREPLACETEXT (OLDHTML, OLDTOKENS, NEWTOKENS));
But apparently any change here, it is overwritten when loading a precompiled .chm.
Then, I think I must compile a personalized .chm. Which leaves me like at first. I will continue looking for a solution.