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I know how you feel. Before I took a programming class, I didn't have a clue how to translate a mathematical algorithm into code. Taking that C class in college really helped. Perhaps you should try that yourself.
If you have taken a class and/or read a few books, then you should at least attempt to convert your algorithm into code. Once you do, compile your code and see if it works. If you get stuck, come back here and show us your work so we can help you pinpoint the problem.
Good luck!
Regards,
Alvaro
That which does not kill me postpones the inevitable. -- despair.com
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Hey Dude,
A quick 'n' dirty way of doing it would be to count the number of digits after the decimal point as your numerator and use this number of digits to calculate your denominator.
Ex: .3456 = 3456/10000
That'd give you a fraction at least.
If you want to reduce it, find numbers that divide both the numerator and denominator evenly. Use the modulus operator for this. A result of 0 indicates that the number is evenly divisible.
ex: 2%10=0, evenly divisible
3%10=1, not evenly divisible.
Of course for very long decimals you may want to adopt some fixed amount of places to round off to. You will lose some precision in the number however.
I'd put the whole operation in a function like:
void print_fraction(double decimal_value),
that prints a fraction for the decimal value you pass to it.
Hope this helps.
Josh Knox
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Is there any control that implements the VSS dialogs or do I have to create them from scratch if I want to integrate VSS functionality in my project?
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Your choice is automation vs SCC APIs. SCC APIs requires signing NDA with MS. Automation is just an automation (no dialogs).....
Why would you even want standard dialogs??? Point of integration is provide something better....
Brian
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Hi All,
I am trying to create a DLL plugin for my favorite non MS IDE and I am getting an "LNK 2019 unresolved external symbol error" when ever it gets to a function call to another file that came with the IDE I am trying to modify. I have included the header file that has the external function declaration in it, in my .c file but it doesn't seem to be working as expected.
The code was written in C I am using VS.NET to compile it as C code. Any clues out there? This is my first attempt at writing a DLL.
Thanks for the help in advance.
Jeff Patterson
Programmers speak in Code.
http://www.anti-dmca.org[^]
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Usually, you must link to the .lib file that goes with the .h file, unless all functions and methods are inline. Check the documentation.
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Thanks for the response.
Unfortunately the documentation is virtually non existant. I have been trying to get this to work for the last three days.
There is only one .lib file and I am linking to that and two .h files in different default directories that I have to include.
I am kind of at a loss. I have spent most of today playing with the compile and link settings.
Jeff Patterson
Programmers speak in Code.
http://www.anti-dmca.org[^]
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I am afraid Michel Prévost is right. You need the right .lib. But I have some questions you need to ask you self. (1) If you are writing add-in using C++ (you did not say), then are you are you making sure you are using C linkage (non-mangled names). Example: When using Visual C/C++ or Visual C++ you need to use
#ifdef __cplusplus
extern "C" {
#endif
#ifdef __cplusplus
}
#endif
ether in the header file or surrounding the include C header file.
(2) Does the library you are attempting to use have the same name as the .dll, If not it is the wrong library and you have a major problem.
(3) If you do not have the right library is there any way that a library can be created from the existing .dll file?
Well I do not know for sure, but I may have seen an aticle on doing that on this site or some where else.
(4) If all else fails contact the company or developers of the IDE you wish to add-in to. On second thought may be you should have tryed this first.
Well I have no solution but I hope the above will give you some direction.
Trust in the code Luke. Yea right!
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I created a DLL in VC++, but I get the following error message when I try to register it. What do I need to do ??
the DLL RegisterServer entry point was not found
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Only COM servers (ActiveX DLLs) can be registered.
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I'm creating a couple of debugging text files from a DLL and I need these to appear only in the same directory as the DLL. I have been using GetCurrentDirectory() to determine the path and appending the filenames to that. This works fine with my test application. However, with the release application (which I have no control over), the files are created on the desktop. Is this because the application is changing the current directory? Both the application and the DLL are in the same directory (usually: c:\program files\...)
So, is there a way to determine the full path to the DLL from within the DLL and not worry about the current directory?
Thanks
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Try GetModuleFileName()
Art
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I use the following..
_TCHAR drive[_MAX_DRIVE];
_TCHAR dir [_MAX_DIR];
_TCHAR fname[_MAX_FNAME];
_TCHAR ext [_MAX_EXT];
_TCHAR path [_MAX_PATH];
GetModuleFileName(NULL, path, _MAX_PATH);
_tsplitpath(path, drive, dir, fname, ext);
CString strCurrentDir = CString(drive) + dir;
Rob
Whoever said nothing's impossible never tried slamming a revolving door!
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Thanks for all the help. I've got things working just fine now.
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I would like to have a SOAP server that would require a client certificate to authenticate the client machines. On the client side, I use the CSecureEvtSyncSocket class. For those who know that class, there is a while loop in the clientHandshakeLoop method of that class.
Here is a part of that loop:
scRet = SEC_I_CONTINUE_NEEDED;
while(scRet == SEC_I_CONTINUE_NEEDED ||
scRet == SEC_E_INCOMPLETE_MESSAGE ||
scRet == SEC_I_INCOMPLETE_CREDENTIALS)
{
scRet = g_Sample_SecurityInit._SecurityFunc.InitializeSecurityContext(&m_hClientCreds,
&m_hContext,
NULL,
dwSSPIFlags,
0,
SECURITY_NATIVE_DREP,
&InBuffer,
0,
NULL,
&OutBuffer,
&dwSSPIOutFlags,
&tsExpiry);
if(scRet == SEC_I_INCOMPLETE_CREDENTIALS)
{
getNewClientCredentials();
fDoRead = FALSE;
scRet = SEC_I_CONTINUE_NEEDED;
continue;
}
}
I configured IIS on the SOAP server to require Client Certificates. I know this should because the application works if this is not set, and returns errors if it is set.
The first call to InitializeSecurityContext returns SEC_I_CONTINUE_NEEDED but the second pass returns 0. What I don't understand, is why the call to InitializeSecurityContext never returns SEC_I_INCOMPLETE_CREDENTIALS which would indicate to the client that a client certificate is required.
Also, I would like to know if there is an article, preferably on CP  , on how to manage client certificates, both on client and server, and how to access them programmatically.
Tx
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1)Is it OK if I do nothing in the constructor – all initializations are done in the initialization list and the body of the Ctor is empty, i.e {}?
2)In one of the class methods I open, read and close a file. In another one I open, write and close an other file. Should I do something in the destructor? I have no class members for these streams so… In any case, Is it OK to leave a Dtor empty (actually not even declaring a Dtor) if there is no allocation on the heap throughout the class (no ‘new’)?
Thanks.
-----------------------
Go USA Go
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1. yes
2. yes, you can leave the dtor empty. as long as your file objects are locals (and so,get cleaned up).
-c
Image tools: ThumbNailer, Bobber, TIFFAssembler
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Makover wrote:
1)Is it OK if I do nothing in the constructor – all initializations are done in the initialization list and the body of the Ctor is empty, i.e {}?
Granted no initialization can throw an exception, yes.
IMHO, this style is ugly, but it's only a matter of personal taste, no problem at all.
Makover wrote:
2)In one of the class methods I open, read and close a file. In another one I open, write and close an other file. Should I do something in the destructor? I have no class members for these streams so… In any case, Is it OK to leave a Dtor empty (actually not even declaring a Dtor) if there is no allocation on the heap throughout the class (no ‘new’)?
Assuming it's a base class, yes. But it's a good practice to declare a virtual destructor on each class, even if empty, this will save you some headaches in the future and will introduce no overhead (or almost no overhead, depending on your compiler).
It's not the fall that kills you: it's the sudden stop - Down by Law, Jim Jamursch (1986)
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Thank You Chris and Daniel,
Daniel Turini wrote:
IMHO, this style is ugly, but it's only a matter of personal taste, no problem at all.
I think so too. Would it be right if I skip the initialization list and do all initialization in the body of the Ctor?
Daniel Turini wrote:
But it's a good practice to declare a virtual destructor on each class, even if empty, this will save you some headaches in the future and will introduce no overhead (or almost no overhead, depending on your compiler).
IS this overhead the Virtual Table? Should I declare my Dtors virtual, even if no virtual methods exist in my class?
Have a quiet week-end
-----------------------
Go USA Go
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Makover wrote:
I think so too. Would it be right if I skip the initialization list and do all initialization in the body of the Ctor?
Depends if you have const member variables, they need to be set in the init list.
M.
Maximilien Lincourt
For success one must aquire one's self
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Yes, const and reference types must be initialized in the iniatializer list. It's actually a good idea to initialize all members there, since it's also a little more efficient than doing it inside the body of the constructor.
Regards,
Alvaro
That which does not kill me postpones the inevitable. -- despair.com
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There is a performance hit when you initialize member variables outside of the init list. Instead of the variable getting initialized with the proper value, it gets initialize and then a new value set. However, for many types of member variables this really isn't an issue since the ctor does nothing at all (i.e. an "int" member variable.)
Tim Smith
I'm going to patent thought. I have yet to see any prior art.
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While you can skip the initialization list and do all of the initialization in the body of the constructor, it is actually a good habit to get into to try to initialize anything that you can using the initializer list.
It doesn't make any difference for simple data types (ints, doubles, etc), but if you have any member variables which have default constructors and also need to be initialized to some value, you end up doing extra work. The compiler will call the default constructor for any members which aren't listed in the initializer list, and then you will assign a value to the member in the body of the constructor.
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I need my add-in sends a similar build that Visual Studio does (with F7).
That is to say, for each workspace loaded in the VS builds all the projects for all its configurations.
what can i do?
Thank you !
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