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2.2.10 DWORD_PTR

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A DWORD_PTR is an unsigned long type used for pointer precision. It is used when casting a pointer to an unsigned long type to perform pointer arithmetic. DWORD_PTR is also commonly used for general 32-bit parameters that have been extended to 64 bits in 64-bit Windows. For more information, see ULONG_PTR.

This type is declared as follows:

 typedef ULONG_PTR DWORD_PTR;