return string from c dll

How about this (Note, it assumes correct lengths - you should pass in the b...

How about this (Note, it assumes correct lengths - you should pass in the buffer length and prevent overflows, etc): extern "C".

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[DllImport(@"dwn.220.v.ua", CallingConvention = dwn.220.v.ua)] [r...

[DllImport(@"dwn.220.v.ua", CallingConvention = dwn.220.v.ua)] [return: MarshalAs(dwn.220.v.ua)] private static extern string.

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That function returns an int with no problem. I have searched hi & lo a...

That function returns an int with no problem. I have searched hi & lo and cannot find a way to return a STRING from the c dll to C# How can I do.

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APIs that return strings are very common. Because it is allocated in global...

APIs that return strings are very common. Because it is allocated in global memory and may be shared by various functions in the DLL.

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Hi, I have inherited some code like below and I wonder if it is safe to pas...

Hi, I have inherited some code like below and I wonder if it is safe to pass a string back from a C++ dll like this. Can someone say if the char* to.

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I can only assume that you've declared TESTDLL_API as #define __declsp...

I can only assume that you've declared TESTDLL_API as #define __declspec(dllexport), otherwise your declaration is not correct. Also, you've not specified the.

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Hello all, I'm trying to create C++ DLL that have some function which ...

Hello all, I'm trying to create C++ DLL that have some function which will return a value as a string. In this DLL, the function returned int value is.

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Ok, I'm pretty new to the C++ area but not to programming. I program i...

Ok, I'm pretty new to the C++ area but not to programming. I program in various other languages and some of the basics are the same but a lot.

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extern "C" __declspec(dllexport) char * GetStringFromDLL() { cons...

extern "C" __declspec(dllexport) char * GetStringFromDLL() { const size_t alloc_size = ; STRSAFE_LPSTR.

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My C++ code, which is set to complie to a dll in VS looks like But first I ...

My C++ code, which is set to complie to a dll in VS looks like But first I need to be able to return a string that was generated in the dll.

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Here is my WORKING C++ DLL snippet that works fine from C++, however, retur...

Here is my WORKING C++ DLL snippet that works fine from C++, however, returns a BLANK to VB6: LPSTR __stdcall GV_GetString_VB(int.

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This is generally considered a bad practice in C++, since the std If you ne...

This is generally considered a bad practice in C++, since the std If you need to pass the object from one function to another, use parameters.

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I am trying to load a c++ dll created with SharpDeveloper and . return p; }...

I am trying to load a c++ dll created with SharpDeveloper and . return p; } extern "C" __declspec(dllexport) string Encrypt(string inmsg) { try.

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I'm importing an old (7.x) DLL to and running into some problems with ...

I'm importing an old (7.x) DLL to and running into some problems with user commands returning a string. We used to write functions like.

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I would like to pass a string to my DLL function and have it modify the . Y...

I would like to pass a string to my DLL function and have it modify the . You will want your C++ function to accept/return char* or wchar_t* to.

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