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Ahh thanks for that. I did see that macro, but MSDN was throwing me off a little.
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I want to have a class in two namespace . If you know how its possible , please share with me .
In other word :
<br />
namespace A<br />
{<br />
class cls1<br />
{<br />
public:<br />
cls1()<br />
{<br />
};<br />
}<br />
}<br />
<br />
namespace B<br />
{<br />
????????
}<br />
<br />
main()<br />
{<br />
A::cls1 var1;<br />
B::cls1 var2;<br />
}<br />
<br />
Thanks a lot .
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put the same thing in namespace B what u mentioned in namespace A
never say die
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No in that case , class B::cls1 isn't same A::cls1 . (It is differ with A::cls1 ).
thanks .
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Why do you want to do such a thing ?? 
It is probably a bad design, unless the two namespaces are nested.
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I have a class that in conceptual model is in two namespace .
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I cannot understand why do you want to do that. Anyway a (poor, I agree...) workaround maybe
namespace B
{
class cls1 : public A::cls1
{
};
};
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
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You should be able to put whatever class def you want into namespace B. What exactly are you worried about?
namespace A
{
class cls1
{
public:
cls1()
{
};
void ThisFunc1()
{
};
}
}
namespace B
{
<CODE> class cls1
{
public:
cls1()
{
};
void AnotherFunc42()
{
};
}</CODE>
}
main()
{
A::cls1 var1;
<code> B::cls1 var2;</code>
var1.MyFunc1();
<code> var2.AnotherFunc42();</code>
} Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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me think you cannot share a class between 2 namespace.
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Might depend on what you mean by "share"... I think the following should work:
namespace A
{
class cls1
{
public:
cls1()
{
};
void ThisFunc1()
{
};
}
}
namespace B
{
<CODE> class cls1
{
public:
cls1()
{
};
void AnotherFunc42()
{
m_cls1FromA.ThisFunc1();
};
A::cls1 m_cls1FromA;
}</CODE>
} Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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Those will be 2 distinct and different classes in 2 namespaces.
If I understood the original post, the guy wanted to start his class declaration in one namespace and continued it in the second namespace.
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Yes, but one shares the other - but I could misunderstand what the OP is talking about.
Peace!
-=- James
If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)
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It's not clear from your question, but I think you want to have the class A::cls1 also visible in namespace B. If that's right, do this:
namespace A {
class cls1 { ... };
}
namespace B {
using A::cls1;
}
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Thanks very much .
Your guide is what I search for .
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I attatched one imagelist along with the listCtrl.
And showed those images to the list view successfully.
But how to change these icons chaged dynamicaly to the list view?
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Use SetItem function and specify the Mask as LVIF_IMAGE
Used on me in a bar: Have you considered suing your brains for non-support?
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How to place text and icon together in a ToolBarCtrl(Dialog based application)?
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Hallo,
I would like to get a mouse event when my console application is running. Under http://www.codeproject.com/shell/taskbaricon.asp is a nice solution but I need to get the mouse event although i did not click on the systray icon. A global mouse event listener in other words.
Thanks a lot for your help. I hope you can understand my English.
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Have a look at the SetWindowsHookEx() function.
Nobody can give you wiser advice than yourself. - Cicero
ப்ரம்மா
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I am trying to build a cryptography program using HMACSHA256 as the verification technique. I came across this article by Nathan Blomquist and here's the link:
File Encryption/Decryption with Hash Verification in C#
http://www.codeproject.com/csharp/fileencryptdecrypt.asp
I edited the code to use HMACSHA256 instead as well as C++. Upon decryption using the incorrect password, I will encounter this error.
An unhandled exception of type 'System.Security.Cryptography.CryptographicException' occurred in mscorlib.dll
Additional information: Padding is invalid and cannot be removed.
Below is my code and the error occurs at this line
while ( (bytesInCurrentBlock = cin->Read(buffer, 0, buffer->Length)) != 0 )
in the DecryptFile function. I would be grateful if someone could point out my mistake here.
PS: I am suppose to be expecting the hmacsha256 mismatch error to throw instead
<code>void CryptoData::EncryptFile(String^ inFile, String^ outFile, String^ password, int keySize,
CryptoProgressCallBack^ callback)
{
FileStream^ fin = gcnew FileStream(inFile, FileMode::Open, FileAccess::Read);
FileStream^ fout = gcnew FileStream(outFile, FileMode::OpenOrCreate, FileAccess::Write);
fout->SetLength(0);
array<Byte>^ buffer = gcnew array<Byte>(BUFFER_SIZE);
int bytesInCurrentBlock;
long long bytesProcessed = 0;
long long fileLength = fin->Length;
long progress;
// generate IV and Salt
array<Byte>^ IV = GenerateRandomBytes(16);
array<Byte>^ salt = GenerateRandomBytes(16);
// create the crypting object
SymmetricAlgorithm^ sma = CreateRijndaelManaged(password, keySize, IV, salt);
// write the IV and salt to the beginning of the file
fout->Write(IV, 0, IV->Length);
fout->Write(salt, 0, salt->Length);
// Initialize the keyed hash object.
HashAlgorithm^ hmacsha256 = gcnew HMACSHA256(sma->Key);
// Compute the hash of the input file.
array<Byte>^ hashValue = hmacsha256->ComputeHash(fin);
// Reset fin to the beginning of the file.
fin->Position = 0;
// Write the computed hash value to the output file.
fout->Write(hashValue, 0, hashValue->Length);
// create the cryptostream
CryptoStream^ cout = gcnew CryptoStream(fout, sma->CreateEncryptor(), CryptoStreamMode::Write);
// read and write the bytes to the crypto stream in BUFFER_SIZE chunks
while ( (bytesInCurrentBlock = fin->Read(buffer, 0, buffer->Length)) != 0 )
{
cout->Write(buffer, 0, bytesInCurrentBlock);
bytesProcessed += bytesInCurrentBlock;
progress = (int)((bytesProcessed / fileLength) * 100);
callback(0, 100, progress);
}
// clear the hashing object
hmacsha256->Clear();
// flush and close the cryptostream
cout->Flush();
cout->Close();
// close the input file
fin->Close();
}
void CryptoData::DecryptFile(String^ inFile, String^ outFile, String^ password, int keySize,
CryptoProgressCallBack^ callback)
{
FileStream^ fin = gcnew FileStream(inFile, FileMode::Open, FileAccess::Read);
FileStream^ fout = gcnew FileStream(outFile, FileMode::OpenOrCreate, FileAccess::Write);
fout->SetLength(0);
array<Byte>^ buffer = gcnew array<Byte>(BUFFER_SIZE);
int bytesInCurrentBlock;
long long bytesProcessed = 0;
long long fileLength = fin->Length;
int progress;
// read the IV and Salt
array<Byte>^ IV = gcnew array<Byte>(16);
fin->Read(IV, 0, 16);
array<Byte>^ salt = gcnew array<Byte>(16);
fin->Read(salt, 0, 16);
// create the crypting object
SymmetricAlgorithm^ sma = CreateRijndaelManaged(password, keySize, IV, salt);
// Initialize the keyed hash object.
HashAlgorithm^ hmacsha256 = gcnew HMACSHA256(sma->Key);
// Create an array to hold the keyed hash value read from the file.
array<Byte>^ storedHash = gcnew array<Byte>(hmacsha256->HashSize / 8);
// Read in the storedHash.
fin->Read(storedHash, 0, storedHash->Length);
bytesProcessed = 64;
// create the cryptostream that will process the file
CryptoStream^ cin = gcnew CryptoStream(fin, sma->CreateDecryptor(), CryptoStreamMode::Read);
// read the BUFFER_SIZE chunks
while ( (bytesInCurrentBlock = cin->Read(buffer, 0, buffer->Length)) != 0 )
{
fout->Write(buffer, 0, bytesInCurrentBlock);
bytesProcessed += bytesInCurrentBlock;
progress = (int)((bytesProcessed / fileLength) * 100);
callback(0, 100, progress);
}
// Reposition the file to compute the hash of the output file.
fout->Position = 0;
array<Byte>^ computedHash = hmacsha256->ComputeHash(fout);
if (!ByteArrayEqual(computedHash, storedHash)) {
throw gcnew CryptoDataException("hmacsha256 mismatch");
}
// flush and close the cryptostream
cin->Flush();
cin->Close();
// close the output file
fout->Close();
}
</code>
-- modified at 5:09 Wednesday 20th December, 2006
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Hi all,
can ne one tell me how to create a 2-dimensional array of strings
thnx
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char x[][10]={"fsfhg",
"abc"
};
never say die
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or u can go for char(*p)[20]
never say die
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