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DLL & C Connect - How to cast to structure

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Dmytryk, Igor

DLL & C Connect - How to cast to structure

Can someone tell me how to cast a pointer to structure in VW?
For example...in c code a function call casts a pointer to character array to a pointer to a structure:

char *charArray;
struct someStruct
        {
        int num;
        int secondNum;
        };

someFunction(someStruct *pointerToStruct)
{
.....
}

in the code the function gets called with the pointer to the character array is cast to a pointer to a structure:

someFunction((someStruct *)charArray);

How can I do this in VW?

Thanks

Eliot Miranda-2

DLL & C Connect - How to cast to structure

aCCompositeType pointerType coerce: aCPointer

e.g.

CCompositeType allInstances collect:
    [:cct| cct pointerType coerce: (CPointer new referentAddress: 12345)]
=>
    #(a CCompositePointer {00003039} (struct ACL * )
      a CCompositePointer {00003039} (struct RECT * )
      a CCompositePointer {00003039} (struct SECURITY_ATTRIBUTES * )
      a CCompositePointer {00003039} (struct {
    long cx, cy;
} * )

etc...

On 2/9/07, Dmytryk, Igor <[hidden email]> wrote:

Can someone tell me how to cast a pointer to structure in VW?
For example...in c code a function call casts a pointer to character array to a pointer to a structure:

char *charArray;
struct someStruct
        {
        int num;
        int secondNum;
        };

someFunction(someStruct *pointerToStruct)
{
.....
}

in the code the function gets called with the pointer to the character array is cast to a pointer to a structure:

someFunction((someStruct *)charArray);

How can I do this in VW?

Thanks