Help converting this C structure?

[C.M. Rouleau]

struct mxArray_tag {
    void    *reserved;
    int      reserved1[2];
    void    *reserved2;
    int      number_of_dims;
    unsigned int reserved3;
    struct {
        unsigned int    scalar_flag : 1;
        unsigned int    flag1 : 1; 
        unsigned int    flag2 : 1;
        unsigned int    flag3 : 1;
        unsigned int    flag4 : 1;
        unsigned int    flag5 : 1;
        unsigned int    flag6 : 1;
        unsigned int    flag7 : 1;
        unsigned int    private_data_flag : 1;
        unsigned int    flag8 : 1;
        unsigned int    flag9 : 1;
        unsigned int    flag10 : 1;
        unsigned int    flag11 : 4;
        unsigned int    flag12 : 8;
        unsigned int    flag13 : 8;
    }   flags;
    unsigned int reserved4[2];
    union {
        struct {
            void  *pdata;
            void  *pimag_data;
            void  *reserved5;
            int    reserved6[3];
        }   number_array;
    }   data;
};

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[Kev Peel]

I believe this should be an exact translation. There are three different structures, 2 TYPEs and a UNION, two of which are combined into the parent structure. Structure alignment depends on the C compiler or MAKEFILE setting, in PB the default alignment is BYTE (1). You should verify this is correct before attempting to use the translated structure.

Type flags ' 32-bits total size.
     scalar_flag As Bit * 1 In Dword
     flag1 As Bit * 1
     flag2 As Bit * 1
     flag3 As Bit * 1
     flag4 As Bit * 1
     flag5 As Bit * 1
     flag6 As Bit * 1
     flag7 As Bit * 1
     private_data_flag As Bit * 1
     flag8 As Bit * 1
     flag9 As Bit * 1
     flag10 As Bit * 1
     flag11 As Bit * 4
     flag12 As Bit * 8
     flag13 As Bit * 8
End Type
 
Union number_array
     pdata As Dword
     pimag_data As Dword
     reserved5 As Dword
     reserved6(0 To 2) As Long
End Union
 
Type mxArray_tag
     reserved As Dword
     reserved1(0 To 1) As Long
     reserved2 As Dword
     number_of_dims As Long
     reserved3 As Dword
     flags
     reserved4(0 To 1) As Dword
     number_array
End Type

* Edited to add spacing.

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[This message has been edited by Kev Peel (edited July 16, 2007).]

[C.M. Rouleau]

Thanks a bunch, Kev.

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