LockWorkStation missing prototype error.

[test_man]

I get missing prototype error when I call sdk function LockWorkStation.

I have included window.h. (First file)

Windows XP.

What am I missing?

Message Edited by test_man on 03-16-2010 04:17 PM

[menchar · Accepted solution]

Add this before Windows.h if you're running XP

#define _WIN32_WINNT 0x0501 

Other values used for different versions of the Win OS. (0x0500 for Win2K, 0x0600 for Vista for example).

http://msdn.microsoft.com/en-us/library/6sehtctf.aspx

It's an OS-specific function so you need to indicate what OS you're targeting.    The prototype is in winusers.h but it's guarded by a check for the OS version.

Menchar