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Don't cross post, it is rude. Your question has been already answered in C# forum.
Giorgi Dalakishvili
#region signature
my articles
#endregion
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Hi,
I am creating a treeview,like Solution Explorer. I done the linking of current file. Now what i want is, it will check the function syntax based on that it will generate the treenode automatically . can you give me some sample code.
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Hi All,
The only thing I can say is I am missing something... Can anyone bail me out.
Thanks,
Jeff
array<Byte>^ key = { ... };
array<Byte>^ encrypted = { ... };
...
pin_ptr<Byte> pk = const_cast< interior_ptr<Byte> >(key);
pin_ptr<Byte> pe = const_cast< interior_ptr<Byte> >(encrypted);
bool result = Decrypt( pk, key->Length, pe, encrypted->Length );
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Found it...
Jeffrey Walton wrote: const_cast< interior_ptr<byte> >(key);
const_cast< interior_ptr<Byte> >(&key[0]);
Jeff
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Out of curiosity, why the const_cast?
What about
pin_ptr<Byte> pk = &key[0];
Mark
Mark Salsbery
Microsoft MVP - Visual C++
![Java | [Coffee]](https://www.codeproject.com/script/Forums/Images/coffee.gif)
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Hi Mike,
Thanks. That works too.
I don't have any CLI books, so I was working off of Nishant's online book (chapter 4 if I recall). I believe I was incorrectly adapting pinning string buffers.
Can you recommend any good CLI books? I wrote to Richter asking him for something similar to CLR via C#. He was working on a book Stan Lippman to "port" his CLR via C# to C++/CLI, but it didn't work out.
Jeff
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Jeffrey Walton wrote: Hi Mike
Please, call me Mark hehe
Nish's book is the only one I know of (and I don't have it unfortunately).
The only managed C++ book I have on my shelf is
"Programming with Managed Extensions for Microsoft Visual C++ .NET"
by Richard Grimes.
It's occasionally a good reference, but now that I don't use managed extensions
(VS 2003 .NET) I don't use it much anymore 
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Hi Mark,
Mark Salsbery wrote: Please, call me Mark hehe
Don't I fell like the horse's ass...
Mark Salsbery wrote: Nish's book is the only one I know of (and I don't have it unfortunately).
I will pick it up shortly. At minimum, it will be support for a valuable CodeProject member.
I'll write to Richter again to try an nudge him along. I'm not above begging
Jeff
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1st I dont have any idea if my question fits into this catagory or not? f not then really sorry friends. however my question is "Can i reuse a C/C++ code into any .Net application using C#?"
(Jameel)
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If it is written in managed c++ then it can be used from any .NET language.
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To use the code with the least amount of modification, you can use C++/CLI (managed C++) to
bridge the gap between the native code and the managed .NET world.
A .NET assembly from C++/CLI will be usable from C# assemblies.
There is a learning curve, its size depending on how much you know about .NET
A first look at C++/CLI[^]
This message board is a good place to get help if you choose to go that route
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Thanx for the help Mark and Giorgi 1 thing more plz. Which 1 could be the easy way to convert my code into a managed code? what about VC++ 2005?
(Jameel)
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How easy it is depends on how well you know managed code and .NET.
I would say the easiest thing to do is wrap your unmanaged/native code
in managed class wrappers.
A search in the articles here at Code Project should yield all kinds of examples.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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If done in managed C++, then yes. You can do unmanaged but it is a bit trickier...
"I guess it's what separates the professionals from the drag and drop, girly wirly, namby pamby, wishy washy, can't code for crap types." - Pete O'Hanlon
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[StructLayout(LayoutKind::Sequential, Pack=1, CharSet=CharSet::Ansi)]
ref struct MyStruct
{
[MarshalAs(UnmanagedType::ByValArray, SizeConst=1024 )]
array<byte>^data;
};
///////////////////////
array<byte> ^Serialize(MyStruct ^Struct)
{
int len=Marshal::SizeOf(Struct);
IntPtr ptr=Marshal::AllocHGlobal(len);
array<byte>^ rawdatas = gcnew array<byte>(len);
try
{
Marshal::StructureToPtr(Struct,ptr,false);
Marshal::Copy( ptr, rawdatas, 0, len );
Marshal::FreeHGlobal( ptr );
//////////////////////////////////////////////////////////////////
return rawdatas;
}
catch(ArgumentException ^e)
{
MessageBox::Show(e->Message);
}
return rawdatas;
}
//////////////
Error in StructureToPtr:
Type could not be marshaled because the length of an embedded array instance does not match the declared length in the layout.
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Please format your posted code in a readable and compilable fashion!!
Use the pre tags and fix the <> brackets!
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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[StructLayout(LayoutKind::Sequential, Pack=1, CharSet=CharSet::Ansi)]
ref struct MyStruct
{
[MarshalAs(UnmanagedType::ByValArray, SizeConst=1024 )]
array<Byte>^data;
};
///////////////////////
array<Byte> ^Serialize(MyStruct ^Struct)
{
int len=Marshal::SizeOf(Struct);
IntPtr ptr=Marshal::AllocHGlobal(len);
array<Byte>^ rawdatas = gcnew array(len);
try
{
Marshal::StructureToPtr(Struct,ptr,false);
Marshal::Copy( ptr, rawdatas, 0, len );
Marshal::FreeHGlobal( ptr );
//////////////////////////////////////////////////////////////////
return rawdatas;
}
catch(ArgumentException ^e)
{
MessageBox::Show(e->Message);
}
return rawdatas;
}
//////////////
Error in StructureToPtr:
Type could not be marshaled because the length of an embedded array instance does not match the declared length in the layout.
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If you add < PRE> tags as Mark suggested, I might actually look at your code...
They tend to preserve indentation, making things much easier to read.
Luc Pattyn [Forum Guidelines] [My Articles]
This month's tips:
- before you ask a question here, search CodeProject, then Google;
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get;
- use PRE tags to preserve formatting when showing multi-line code snippets.
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I don't have any idea how you're actually using this code, but from the error message,
is the number of elements in the data array == 1024 as specified by SizeConst?
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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1)when i declare variable int count = 0; in ref class it show error
cannot declare non-static member in ref class
I solved all relevant errors by putting static in front like this:
static int count = 0;
Will it be any problem in this way?
2) I create a namespace xxx will several class and function in a cpp file then want to use it in namespace form1 ref class form in Form.h file. I put using namespace xxx in it but error come out like this: xxx is not a namespace or cannot find namespace xxx
To do what i want, how is the right way should be?
ps: I know my questions is no standard but pls help to answer it if u willing to, otherwise ignore me. TQ.
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Member 4542272 wrote: 1)when i declare variable int count = 0; in ref class it show error
The error should be something like this:
"error C3845: 'MyRefClass::count': only static data members can be initialized inside a ref class or value type"
Yes, you can solve it by making the variable static, but you get the ramifications of doing so.
There is onle ONE instance of a static class variable, and it is shared by EVERY object of
that class. Is that really what you want?
If not, you should move your initialization to a constructor, in the normal C++ way...
ref class MyRefClass
{
public:
int count;
TestRefClass() {count = 0;}
};
Member 4542272 wrote: 2) I create a namespace xxx will several class and function in a cpp file then
Can you show some sample code? You can't state you're using a namespace if the compiler doesn't
have knowledge of the namespace's existence. The namespace should be in at least one header
file #included in the module(s) you're using it in.
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Ya, your explanation for first question is exactly what i want, thanks.
Here is the sample code for question 2:
Let say in Form1.h hv a ref class Form1: public System::Windows::Forms::Form
i add a xx.h file and make function code inline. In the xx.h file:
namespace Mix{
ref class Meat{
public:
Meat();
void CleanMeat(){};
void CookMeat(){}:
};
enum class Vege {tomato, carrot};
enum class fruit{apple, orange,};
}
then i #include xx.h in the Form1.h and put using namespace Mix; By doing these, can i use the class in namespace Mix at ref class Form1 already?
ps: Can u help me look at the new error question in the c++/cli asynchronous socket thread at about page 4 also?
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Member 4542272 wrote: By doing these, can i use the class in namespace Mix at ref class Form1 already?
I don't see why not
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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Member 4542272 wrote: Can u help me look at the new error question in the c++/cli asynchronous socket thread at about page 4 also?
Link? (you can use the permalink button at the bottom of the post to get a direct link copied to your browser's address bar).
Mark
Mark Salsbery
Microsoft MVP - Visual C++
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