Converting byte [] to SAFEARRAY

[Mannie]

Hi!

In my C++ application I need to use COM object (written in c#). The cooperation of COM and C++ application works fine, but I have a problem with calling one of C# methods.

MyComObject::Co mClass InterfacePtr p (__uuidof(MyCom Object::ComClas s ));
_com_ptr = p;
_com_ptr->ProcessFile(_b str_t a_strNewFileNam e, SAFEARRAY * a_arrFileConten ts )

the original C# method is defined as follows:
public string ProcessFile(str ing a_strNewFileNam e, byte[] a_arrFileConten ts)

the byte array represents the content of the file red from C++ level.

I need a piece of code showing how to read a content of the file and save this in a SAFEARRAY object (so as to call the ProcessFile method)

Would anyone help me to solve this problem,please? ?

[weaknessforcats]

A SAFEARRAY is just a struct that contains your string. It also constains the number of dimensions and the sizes of thse dimensions.

Generally, you use the VARTYPE of a VARIANT when you call CreateSafeArray Vector. This will create a SAFEARRAY and return a pointer to it.

[Mannie]

A SAFEARRAY is just a struct that contains your string. It also constains the number of dimensions and the sizes of thse dimensions.

Generally, you use the VARTYPE of a VARIANT when you call CreateSafeArray Vector. This will create a SAFEARRAY and return a pointer to it.

Thanks weaknessforcats , but because I'm not very skilled C++ programmer (as I've written I need to call COM method), please help me to write a piece of code, that would create an argument of SAFEARRAY * type (content of some file), which is essential to call the method:


ProcessFile_2 ( _bstr_t a_strFileName, SAFEARRAY * a_arrFileConten ts )

The definition of SAFEARRAY structure is as follows:

typedef struct tagSAFEARRAY
{
USHORT cDims;
USHORT fFeatures;
ULONG cbElements;
ULONG cLocks;
PVOID pvData;
SAFEARRAYBOUND rgsabound[ 1 ];
} SAFEARRAY;