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Questions tagged [bitflags]

the use of individual bits in a byte (or a set of bytes) to represent boolean values.

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CreateFile - dwDesiredAccess

As said here Microsoft docs - CreateFileA function dwDesiredAccess The requested access to the file or device, which can be summarized as read, write, both or neither zero). The most commonly used values are GENERIC_READ, GENERIC_WRITE, or both …
ElayM
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Compact non-repetitive way for an ALL flag in enums that represent bitflags in C++

I often use enums for bitflags like the following enum EventType { NODE_ADDED = 1 << 0, NODE_DELETED = 1 << 1, LINK_ADDED = 1 << 2, LINK_DELETED = 1 << 3, IN_PIN_ADDED = 1 << 4, IN_PIN_DELETED = 1 << 5, IN_PIN_CHANGE = 1…
Philipp Mildenberger
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How to make [Flags] enum and switch case work together?

How to make [Flags] enum and switch case work together? Very desirable to make it looks simple. Similar Questions asked many times, but never directly to [Flags] enum. If M1 set execute operation 1, if M2 set execute operation2 , if BOTH M1 and…
justromagod
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Bit Manipulation and Flags

https://i.stack.imgur.com/pteDe.png A: When the man page for open says: The flags specified are formed by or'ing the following values: O_RDONLY open for reading only O_WRONLY open for writing only ... it means…
heskin reaper
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Motorola 68k: Understanding the status registrer flag states

I'm having trouble understanding how exactly the Status Register (SR) content works. Let's say that the content of (SR) = $0300. How would I figure out in which states the flags are? Of course that would also answer the question, if the flags…
Dominik Car
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Bit-Flag for decimal 8 in File Attribute

This site gives a overview of file-flags currently in use. I miss the value 8 in the table. FILE_ATTRIBUTE_ARCHIVE 32 (0x20) FILE_ATTRIBUTE_COMPRESSED 2048 (0x800) FILE_ATTRIBUTE_DEVICE 64 (0x40) FILE_ATTRIBUTE_DIRECTORY 16…
Grim
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Gmod Lua - Checking if flag exists in bitflag

I am trying to check if a key is being pressed at the current frame in Gmod Lua with cmd:GetButtons(). In other words, I am trying to see if a flag exists in a bitflag in Lua. I am attempting the following code: -- flags = 1024 (when holding…
Ari Seyhun
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Most efficient way to check if flags are set in an integer

I have 11 flags defined as: #define F1 1 #define F2 2 #define F3 3 #define F4 4 ... #define F11 11 In some function I then create an integer which can include either of those flags, for example: int a = (1 << F1) | (1 << F5) | (1 << F11) | (1 <<…
user1806687
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What are the flag by flag permissions required for userAccountControl ADSI property?

I have a situation where I'd like to use PowerShell in an environment without Get-ADUser to determine whether another account is expired. Someone else in the domain is able to read the userAccountControl property off of the object returned from an…
Code Jockey
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Okay to add non-power of 2 values to enum with flags?

In my enum below, my intention is to be able to use Scheduled to mean 'ILT | VILT | HVILT'. In the guidelines for making this kind of enum everyone suggests using powers of 2, obviously, but if I actually mean Scheduled to be a combination of those…
BVernon
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.NET Enum and BitFlags

I’m using [Enum] as part of a list for special template in my pages.. Enum SMARTTAGS As Long ITEM01 = 1 << 1 ITEM02 = 1 << 2 ITEM03 = 1 << 3 ITEM04 = 1 << 4 ITEM05 = 1 << 5 … ITEM31 = 1 << 31 ITEM32 = 1 << 32 ITEM33 = 1 << 33 …
Frederic
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Expand bit fields to multiple rows (kinda join)

let's say I have a table like this: CREATE TABLE [dbo].[Scheduler]( [DayOfWeek] [tinyint] NOT NULL, [Time] [time](0) NOT NULL, [Action] [varchar](255) NOT NULL ) And some data, like this: INSERT INTO Scheduler VALUES (1, '11:00:00',…
navossoc
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How to get list of printers not printing direct?

I need a list of printers that DO NOT print direct. Getting a list that do print direct seems reasonably easy. But how to do the opposite? Dim PrintServer As New SysPrint.PrintServer Dim arrFlags(0) As SysPrint.EnumeratedPrintQueueTypes …
D_Bester
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C# Enum Flags - roles edit, view, admin

I define my roles like this: [Flags] public enum Roles : byte { View = 1, Edit = 2, Admin = (View | Edit) } View role, can view only Edit can view and edit only Admin can do Admin stuff, edit and view Am I doing…
user2818430
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Checking UInt16 for flags using Enum.HasFlag()?

I have a C#/.NET 4.0 application that receives and parses some data from a network connection. One particular piece of data that I need to parse is a UInt16 value that represents a set of flags. I've defined an enum that represents these flags…
bmt22033
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