SendMessage and FireFox/IE/Webbrowser

Question

Is it possible to SendMessage to HTML Controls inside a Webbrowser component? If so, how can I get their HWND? I've been struggling with Spy++ and WINID, and I couldn't access those controls HWND.

Answer 1

IE's controls are not nested windows, so you cannot use SendMessage() to send messages to them. IE draws its own controls and their internal workings are not public and are version dependent.

Firefox uses Gecko which, I believe, implements its own controls as well, so you will not have luck there either.

In a new question you should explain why you want to send messages to these controls as there is probably a way to do what you really want. My psychic powers tell me using the IAccessible family of interfaces may be what you actually want.