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Hallo,Before all i want to say sorry to my poor english.
I'm little new in this kind of develop like C++, and i'm trying to do a client server in visual c++ where i have to do a connection with the login of one user that previous is registered (but it's not my problem).When i have the user login, with this user i have to send the information to the server and the server will say me what access i have, like if i have access to different devices like USB, cd-Rom,..( it's my real problem, how can i restrict the different kind of devices?) or what files have i access to download to my client and i think that here i have to implement Encrypt of files.
Somebody can say me how can i do this or which libraries can i use or a idea of like implement this problem.
Thank you very much and i hope that you can help me.
Jörge
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How can I send an escape sequence to the printer?
I'm working with the C++ Builder and the VCL is not supporting escape sequences.
So I tried these snippet
char Help[1024];
sprintf(Help, "\x00c"); // escape sequnce for form feed
Escape(printer->Canvas->Handle,
PASSTHROUGH,
sizeof(Help),
Help,
NULL);
But the printer is not doing anything.
Thanks for your help!
----
Sorry that I posted the question to a wrong article already
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I don't believe that C++ Builder supports managed C++
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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does anyone here have a managed c++ sentence parser? i just need it... i have a sentence parser in c++, but i dont know how to convert it into managed c++, does anyone here know how to do it?
thanks for your replies
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Well, the following works in C#:
static void Main(string[] args)
{
string myString = "Just words, please.";
char [] seperators = {' ', ',', '.', '?'};
int startPos = 0;
int endPos = 0;
do
{
endPos = myString.IndexOfAny(seperators, startPos);
if(endPos == -1)
{
endPos = myString.Length;
}
if(endPos != startPos)
{
Console.WriteLine(myString.Substring(startPos, (endPos-startPos)));
}
startPos = (endPos + 1);
} while (startPos < myString.Length);
}
And you can get a C# string in C++ as follows:
#pragma push_macro("new")
#undef new
String* str = new String(S"Just words, please.");
#pragma pop_macro("new")
There must be a way to put them together.
Good luck.
Sincerely,
-Ron
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thanks... ill try to use this... i hope i can.. hehe.. 
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Hi, I am building a Testing tool using C++.net for college. I need to
get a very accurate measurement of a c functions execution time.
Currently I am running the function as real-time process and using the
QueryPerformanceCounter to measure its time, however this is still not
very accurate (between 1 and 5% inaccuracy). Any ideas on how to
improve this would be much appreciated.
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I was recently messing around with this approach, and I found the results to be unverifiable. I was using the high fidelity system time stamp retrieved from a CounterSample (I suspect that you did something similar). The MSDN documentation states that the timestamp has an accuracy of a tenth of a millesecond.
I found this article over in the MSDN Magazine archives, maybe it will help:
http://msdn.microsoft.com/msdnmag/issues/04/03/HighResolutionTimer/default.aspx[^]
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LARGE_INTEGER startCount, endCount, freq;
QueryPerformanceFrequency(&freq);
QueryPerformanceCounter(&startCount);
YourFunc();
QueryPerformanceCounter(&endCount);
printf("Elapsed time = %lf", (double)(endCount-startCount)/freq);
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Is is possible to create an object that inheriets from a MFC object in .NET?
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While this article does address using C++ in .NET, it fails to address inheritience.
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What do you mean by "inheriets in .NET?" What is different about your derived class that makes you ask this question? Is it in a language other than C++? Is it under the CLR's control?
Sincerely,
-Ron
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I have a managed class called ConfigManager, with a static method:
static void StartService()<br />
{...}.
When I compile, the compiler changes the method name to
<br />
static void StartServiceA()<br />
{..}.
If I change the method name to StartServiceBlaBla, the compiler doesn't change it.
Any one has an idea?
Thanks,
Yaakov
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When you include windows.h it defines some macros. One of them is like this:
#define StartService StartServiceA
This is used to replace the windows function StartService with the non-unicode version of it. To get around this problem you can either rename your function or include the following line after you include windows.h.
#undef StartService
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Does anyone know how to find a local group's permissions? I am enumerating through the local groups on my machine using the NetLocalGroupEnum API, but when I check the group using the NetLocalGroupGetInfo API, I only get two pieces of information that I don't need:
1 The group's name - already have, don't need again
2 The group's description - doesn't serve my purpose
Are there any APIs or methods that I can use to find if a local group is an admin group? I've spent many many hours working on this problem and I am getting a little frustrated.
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I had inserted from InsertMenu->new ATL Object->Miscallenous->Dialog
Give it short name MyDialog.Then inserted Microsoft Web Browser(By Right clicking on dialog and choosing
insert ActiveX Control).Now my problem is how can i call www.yahoo.com
in the control and get Documentcomplete and events such as were user clicked.
Plz help Me
Thanks in advance
Devom
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I migrated a Visual Studio 6.0 C++ project to Visual Studio .NET 2003, and when I tried to build it, got the following linker error:
Scheduler error LNK2019: unresolved external symbol __aulldvrm referenced in function "unsigned __int64 __cdecl AdjustHilTime(unsigned long)" (?AdjustHilTime@@YA_KK@Z)
I received a similar error with __ftol2 (instead of __aulldvrm), and fixed it by adding the following code:
#if (_MSC_VER >= 1300)
//VC7 or later, building with pre-VC7 runtime libraries
extern "C" long _ftol( double ); //defined by VC6 C libs
extern "C" long _ftol2( double dblSource ) { return _ftol( dblSource ); }
#endif
Can anyone tell me how to do something similar to fix my __aulldvrm problem?
TB
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You've included AdhustHilTime from a header file, but you've not linked to the binary file that contains it. You need to add the library to your linker settings.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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I was wondering if anyone know where I can get a webpage control. I.E. a viewer control that will display a webpage ( I believe VB had something like this at one point).
Thanks,
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You can host IE as a control.
Christian
I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer
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I right click on a selected datagrid cell and my context menu does NOT display. However, if I right-click on a non selected field I DO get my context menu? How can I fix that.
I used SPY++ and noticed that right-clicked on a selected cell is different then clicking on an unselected cell.
HELP 
System::Void contextMenu_Popup(System::Object * sender, System::EventArgs * e) {
MenuItem* menuItem1 = new MenuItem(S"&Match");
this->contextMenu->MenuItems->Clear();
this->contextMenu->MenuItems->Add(menuItem1);
}
TIA,
James
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How can I do that, in C++?
I heard I had to use a API, but I don't even know what that is...
I just need a simple function that replaces or adds a key to the registry, can anyone help me with this?
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