November 1998
Intermediate to advanced
1520 pages
37h 53m
English
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Client-Area Mouse Messages
In the previous chapter, you saw how Windows sends keyboard messages only to the window that has the input focus. Mouse messages are different: a window procedure receives mouse messages whenever the mouse passes over the window or is clicked within the window, even if the window is not active or does not have the input focus. Windows defines 21 messages for the mouse. However, 11 of these messages do not relate to the client area. These are called “nonclient-area messages,” and Windows applications usually ignore them.
When the mouse is moved over the client area of a window, the window procedure receives the message WM_MOUSEMOVE. When a mouse button is pressed or released within the client area of a window, the window ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.