Why can't I enter text in Winform hosted in ATL dialog?

Question

I am working on embedding winform controls into an ATL dialog (see here for how I did so far).

Now I have encountered a rather strange problem.
For some reason, the text fields in my winforms display fine, but I am unable to change the text in them by typing on the keyboard.

However, I can copy and paste text from elsewhere into the text field and it is then treated as normal input (event for text change is fired etc.).

How do I get the text fields to behave normally and allow text input via keyboard?
Any hints?

Answer 1

There's something wrong with your message loop. TranslateMessage() is the likely candidate, that's the one that generates WM_CHAR messages from a WM_KEYDOWN message.