dialog - detect if WM_xxx messages are from an external party

Giganews Newsgroups
Subject: dialog - detect if WM_xxx messages are from an external party
Posted by:  R.Wieser (addre…@not.available)
Date: Mon, 21 Jan 2019

Hello all,

I've got a dialog which should respond to some external WM_xxx messages.  I
would however like to protect the internally-generated ones (callbacks and
so on by its children) from being confused as external ones (read: send them
to different handlers).

Question: How do I differ between the two groups of messages ?

A quick peek into User32 did not turn up anything, and neither did some
googeling (might be a case of not knowing what exactly to look for though
.....)

Regards,
Rudy Wieser

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