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You can't declare the class static but yes, static methods and member variables will give the
same behavior.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
This episode brought to you by the letter N
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I also want to ensure that MyStaticClass cannot be instantiated. Do you think I should make the class sealed in addition to what I've listed above? And do I need to worry about operator=()?
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sealed is good to ensure no derived classes.
Off the top of my head, I'd say just having a private default constructor is sufficient.
Without being able to instantiate any objects of the class, the destructor, assignment operator,
and copy constructor are irrelevant.
If, after some more caffeine, I change my mind about that, I'll let you know 
Mark
This episode brought to you by the letter N
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OK. Thanks for the input. This is what I'm going with:
public ref class MyStaticClass sealed
{
public:
private:
MyStaticClass() {};
};
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That looks like a static class to me
Cheers,
Mark
This episode brought to you by the letter N
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Hi
I am trying to make a detour wrapper class and so i have created some template functions and classes. These are the classes(in simplified form):
Header File:
<br />
#ifndef DETOUREME_H<br />
#define DETOUREME_H<br />
<br />
#include "..\..\..\stdafx.h"<br />
<br />
HRESULT WINAPI somefunction( void );<br />
<br />
class DetourWrapper<br />
{<br />
public:<br />
DetourWrapper(void){};<br />
~DetourWrapper(void){};<br />
<br />
template<typename H> BOOL isDetoured ( H* pClass, int iType );<br />
};<br />
<br />
class DetourThis<br />
{<br />
public:<br />
DetourThis(){};<br />
~DetourThis(){};<br />
<br />
virtual BOOL isDetoured( void ){ return TRUE; };<br />
};<br />
<br />
extern DetourWrapper g_pDW;<br />
extern DetourThis *d_pDT;<br />
<br />
#endif
CPP File:
<br />
#include "Debug.h"<br />
<br />
extern DetourWrapper g_pDW;<br />
extern DetourThis *d_pDT = NULL;<br />
<br />
template<typename H> BOOL DetourWrapper::isDetoured ( H* pClass, int iType )<br />
{<br />
return pClass->isDetoured();<br />
}<br />
<br />
HRESULT WINAPI somefunction( void )<br />
{<br />
d_pDT = new DetourThis;<br />
BOOL enabled = g_pDW.isDetoured(d_pDT, 2);<br />
}
Error:
Linking...<br />
Debug.obj : error LNK2001: unresolved external symbol "class DetourWrapper g_pDW" (?g_pDW@@3VDetourWrapper@@A)<br />
C:\Documents and Settings\Steal.Patrick\My Documents\Visual Studio 2005\Projects\Detours\Release\Detour.dll : fatal error LNK1120: 1 unresolved externals
Can someone please tell me what i am doing wrong here?
Thanks
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I have linked my C/C++ static libraries compiled in VS2005 to my C++/CLI interop project, I want to use C++/CLI interop to export this functionality to C# client.
If i put a call to any static lib function in this interop project, The Interop project compiles properly but gives runtime error
---------------------------
Microsoft Visual C++ Debug Library
---------------------------
Debug Assertion Failed!
Program: ...
File: dbgheap.c
Line: 1473
Expression: _CrtIsValidHeapPointer(pUserData)
For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts.
(Press Retry to debug the application)
---------------------------
Abort Retry Ignore
---------------------------
Do I need to initialize CRT or somthing in the interop project
If i use a test static lib (static lib created for testing purpose by me) everything works fine, problem occurs when I link my products static libraries and try to call a function from these static lib in my interop project
Subodh Borker
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Hello Subodh,
One clean solution would be to wrap your static library into the regular DLL, which can then be used within the CLI project.
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I am using Visual c++. Net 2005 with sql server 2000 database.
If I change or add new fields in tables; who can I refresh my Dataset object
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By doing a request for data from the DB, again.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Bonjour,
i introduce a laibrairie in my project, whene i compile there are error :
D:\Program Files\Microsoft Visual Studio 8VC\PlatformSDK\include\wspiapi.h : (44)error C2894: templates cannot be declared to have 'C' linkage
please help me to resolve this pb.
Thank you verry mutch
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Doesn't look like a CLI question to me, have you tried the visual C++ forum ?
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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In my form a have one datagridView to show all data from my table. And I have textboxes from where I changed data on my table when I click on a button "save".
Now I want those changes can be shown immediately on my datagridView without leaving the form and return.
What can I do so to refresh datagridview datasource programmaticcaly .
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I think there is a Refresh method you can call.
"I've seen more information on a frickin' sticky note!" - Dave Kreskowiak
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Refresh don't working
The solution is to bind again datasource
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Hi
is it possible to declare a vector with a name that we read from a file or cin?
thanks
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I think you're in the wrong forum, you're asking about standard C++ stuff, not .NET. Either way, the answer is no. You can't make a variable name dynamic, and why on earth would you ? You can create a map of strings to vectors, and name them that way.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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yes i think i m in the wrong place...
What do you mean with you can create a map of strings to vectors, and name them that way.
thanks
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map<string, vector<myType> > myTypes;
myTypes["fish"] // reference a myType named fish
Not sure if you need to use pointers to make it initialise, or not. Long time since I did this in C++
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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map<string, vector<mytype=""> > myTypes;
myTypes["fish"] // reference a myType named fish
Hi
Sorry for the ignorance, I'm new to c++. Is there a way to call the myTypes["fish"] from a cin?
for example use cin to read a string(num) and call the cout<
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I recommend reading about the map/dictionary/hashtable ( they are all the same thing ) type of container. In a nutshell, map<x,y> is a container where you use an object of type x, to map to an object of type y. So, map<string, int> would mean that myMap["string"] returns an int, and can be put anywhere that an int is expected.
You may need to store a pointer, so that you can set values on it, I'm not sure if a copy by value would otherwise occur. Like I said, I"m rusty on the details.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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Christian Graus wrote: I'm not sure if a copy by value would otherwise occur.
The standard memberwise copy would be used unless you override it.
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yeah, I thought so, but I wasn't sure. Lots of cobwebs in that part of the brain....
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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I have a text file which has data written to it.. If I open the file, how would I read the data in the file one line at a time, then do something with the data, then read the next line etc
Thanks for your help!
--PerspX
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File.ReadAllLines will return the text as a string array. Assuming you meant to ask in the .NET C++ forum ( which you have )
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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