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Asked: 2026-05-15T22:39:53+00:00

The VS documentation states Half the size of a pointer. Use within a structure

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The VS documentation states

Half the size of a pointer. Use within a structure that contains a pointer and two small fields.

Windows Data Types

What, exactly, is this type and how is it used, if ever?

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  1. Editorial Team

    Use within a structure that contains a pointer and two small fields.

    This means that in the following structure, no padding is required:

    struct Example {
    void* pointer;
    HALF_PTR one;
    HALF_PTR two;
};

    Of course, this is only relevant if the size of HALF_PTR (32 bits on a 64-bit system, 16 bits on a 32-bit system) is sufficient to hold the intended values.

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