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.Net API Docs: How to Find DLL Definitions

Posted on 2004-04-05
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Last Modified: 2007-11-27
This is a general question regarding how to find the information I'm looking for in the maze of .NET documentation.

While working on the my current project, I am converting some C++ code into C#. What I have to work with is pretty much a bunch of code snippetts. An example follows:

WSAQUERYSET wsaqueryset = new WSAQUERYSET();
wsaqueryset.dwNameSpace = NS_BTH;

One of the challenges I am faced with is finding where references to constants such as: NS_BTH are defined. I'm using the .Net help systems with limited success. I need to find where NS_BTH (as a generic example) are defined in that way, I can add the proper DLL imports into my code, such as:

[DllImport("ws2.dll")]
private static extern int WSAStartup(short versionrequested,byte[] wsadata);

I can find references to things like WSAQUERYSET and know which DLL it is defined in, but when it comes to the constants, no such luck.

Bottom line, how do I go about finding this type of documentation?

Thanks!
Tom
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Question by:tdenniso
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15 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 10760427
What is the C++ application for?  NS_BTH is the Bluetooth Namespace constant, but I agree with you that it is very difficult to find.

Bob
0
 

Author Comment

by:tdenniso
ID: 10760725
Bob:

The C++ "program" is just a bunch of code snippets that I've accumulated. The new C# program will have Bluetooth functionality, hence I really need to find the definitions.

Tom
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 10760751
Are these code snippets from working programs, or are they a collection of unrelated code?

Bob
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Author Comment

by:tdenniso
ID: 10760870
Basically a collection of unrelated stuff. No one ever puts the includes, etc in the samples.

Tom
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 10760889
My first suggestion would be to search for files that have the NS_BTH string within them.  Starting from the C:\ (or C:\Program Files if you are adventurous).

Bob
0
 

Author Comment

by:tdenniso
ID: 10760908
I did that this morning (it sure took a while)! They only thing found were the sample snippets! ARGH!
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 10760961
I saw some comments about the Compact Framework not having Bluetooth classes and definitions in the first version.  I think that Windows CE.NET has Bluetooth support.

Bob
0
 

Author Comment

by:tdenniso
ID: 10761009
I THINK I'm using the most current version. I'm using Visual Stuido 2003, and I assume it came with the newer version.

Tom
0
 

Author Comment

by:tdenniso
ID: 10761041
Here's a more detailed example:

The constant NS_BTH is used in structure WSAQUERYSET.

In the online docs, it says Requirements:
Runs On: Windows CE OS
Versions: .Net 4.0 and later
Defined in: Winsock2.h
Include: (blank)
Link to: (blank)

I would expect the info I need to be in the Include column.

Tom
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 10761042
Windows CE.NET is a separate product from VS.NET 2003.  The Compact Framework is part of VS.NET 2003, but I don't think that it has Bluetooth support.

Bob
0
 

Author Comment

by:tdenniso
ID: 10761073
Bob:

I've actually been able to compile and run some of the Bluetooth functions (which are basically winsock). i.e.:

while(lookupresult != -1)
{
lookupresult = BthNsLookupServiceNext(handle, LookupFlags.ReturnAddr | LookupFlags.ReturnName , ref bufferlen, queryset);
if(lookupresult != -1)...... (etc).

I'd think I would not be able to compile if something was missing.

Tom
0
 
LVL 96

Accepted Solution

by:
Bob Learned earned 250 total points
ID: 10761086
I found Winsock2.h, and found WSAQUERYSET within the include file, but that doesn't include all the values for the namespace.  I would imagine that this comes from the Bluetooth classes.

Bob
0
 
LVL 12

Expert Comment

by:farsight
ID: 10768067
This is an excellent resource for all issues related to interop:
  http://www.dotnetinterop.com/

Microsoft realized many developers were having issues with interop, so they created this site just for related issues.
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