C Programming
 
Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
User Name:
Password:
Remember me
Go Back   Dev Shed ForumsProgramming LanguagesC Programming

Reply
Add This Thread To:
  Del.icio.us   Digg   Google   Spurl   Blink   Furl   Simpy   Y! MyWeb 
Thread Tools Search this Thread Rate Thread Display Modes
 
Unread Dev Shed Forums Sponsor:
Be the architects of evolution and help create the mobile internet future. It’s your move---enter to win here!
  #1  
Old April 26th, 2003, 01:47 PM
fennec fennec is offline
Junior Member
Dev Shed Newbie (0 - 499 posts)
 
Join Date: Apr 2003
Posts: 2 fennec User rank is Just a Lowly Private (1 - 20 Reputation Level) 
Time spent in forums: < 1 sec
Reputation Power: 0
Dword ???!!!!!!!!!!

hi !

a dword contain a flag .... i don't know read this flag because, i can only read an unsigned int ...

can you help me ???

Reply With Quote
  #2  
Old April 26th, 2003, 02:05 PM
dwise1_aol's Avatar
dwise1_aol dwise1_aol is offline
Contributing User
Dev Shed Expert (3500 - 3999 posts)
 
Join Date: Jan 2003
Location: USA
Posts: 3,803 dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level) 
Time spent in forums: 1 Month 11 h 55 m 53 sec
Reputation Power: 437
I don't quite understand your question.

In Windows programming, DWORD is an unsigned long, an unsigned 32-bit integer.

But you are saying that it contains a flag. OK, sometimes in a BYTE, UINT (unsigned int, 16 bits), or even a DWORD individual bits can serve as binary flags that are either set to 1 (true) or reset to 0 (false).

Which bit is the flag? Or does it have a predefined constant value, like 0x00000020L, though you only know it by its name, like SOME_FLAG? In that case, AND the flag value to the DWORD. If the flag is reset to 0, then a zero value will be returned. But if the flag is set to 1, then a non-zero value will be returned (which BTW will be the same value as the flag value).

So:
Code:
if (the_dword & SOME_FLAG)  // and the DWORD and the flag constant, non-zero is true
{
    //  do the processing for the flag having been set to true
}
else
{
    //  do the processing for the flag having been reset to false
}


Did that answer your question?

Reply With Quote
  #3  
Old April 26th, 2003, 02:24 PM
fennec fennec is offline
Junior Member
Dev Shed Newbie (0 - 499 posts)
 
Join Date: Apr 2003
Posts: 2 fennec User rank is Just a Lowly Private (1 - 20 Reputation Level) 
Time spent in forums: < 1 sec
Reputation Power: 0
yes thanks !!

my problem is that i don't know the value of differents flags i need. but i'm going to search !!!

Reply With Quote
  #4  
Old April 26th, 2003, 08:26 PM
dwise1_aol's Avatar
dwise1_aol dwise1_aol is offline
Contributing User
Dev Shed Expert (3500 - 3999 posts)
 
Join Date: Jan 2003
Location: USA
Posts: 3,803 dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level)dwise1_aol User rank is Lieutenant Colonel (40000 - 50000 Reputation Level) 
Time spent in forums: 1 Month 11 h 55 m 53 sec
Reputation Power: 437
Usually, the header file contains #define statements which define the values for the flags and other constants and give them names (in all caps by convention). Then all you have to do is use the name; you don't need to know what the actual value is.

Reply With Quote
Reply

Viewing: Dev Shed ForumsProgramming LanguagesC Programming > Dword ???!!!!!!!!!!


Thread Tools  Search this Thread 
Search this Thread:

Advanced Search
Display Modes  Rate This Thread 
Rate This Thread:


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox
Forum Jump


Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
  
 





© 2003-2008 by Developer Shed. All rights reserved. DS Cluster 6 hosted by Hostway