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visual c++ compile error

Posted on 2004-03-29
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Last Modified: 2013-11-20
When I tried to compile a visual c++ project, I loaded the .dsw file and build it. But it always gave me the error:

Compiling...
VideoDisplay.cpp
C:\shiming\VirtualDub\sourcecode\VirtualDub\source\VideoDisplay.cpp(54) : error C2065: 'SM_REMOTESESSION' : undeclared identifier
C:\shiming\VirtualDub\sourcecode\VirtualDub\source\VideoDisplay.cpp(167) : error C2065: 'GetWindowLongPtr' : undeclared identifier
 ...

I mean, it didn't told me that it could not find the header file. But I think 'SM_REMOTESESSION' is defined by MSDN header. I downloaded SDK. I don't know what's the reason.

Anyone can help?

Thank you!
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Question by:missdong
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9 Comments
 
LVL 15

Accepted Solution

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lakshman_ce earned 300 total points
ID: 10709540
Try adding
#include <windows.h>
in your VideoDisplay.cpp file

-Lakshman
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LVL 14

Expert Comment

by:wayside
ID: 10713697
SM_REMOTESESSION is defined in WinUser.h, which is in the platform SDK :

#if(WINVER >= 0x0500)
#define SM_REMOTESESSION        0x1000

...
#endif /* WINVER >= 0x0500 */
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LVL 15

Expert Comment

by:lakshman_ce
ID: 10713786
In msdn you will find
Header: Declared in Winuser.h; include Windows.h.
means we just need to include Windows.h
For e.g you can have a look at the link,
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/getsystemmetrics.asp


-Lakshman
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Expert Comment

by:dong9968
ID: 11857242
Thanks for all the help, now it works after I include windows.h in my cpp fie.

shiming
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Expert Comment

by:dong9968
ID: 12006543
Thanks. Please close this question. It is solved
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