C language > Windows questions

From 32 bit to 64bit

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bitcoin:
Hello
i try to re-write my program to work in native 64bit.

Many errors with memory access, because many code such as
--- Code: ---functionAddres = (DWORD)GetProcAddress(curDllModule, pFunction);
--- End code ---
In 64bit address may be greater then DWORD value.. Can I change all pointers to DWORD_PTR ? Or I must use ULONG?

Pelle:
DWORD_PTR should work fine. Also works with ULONG_PTR. ULONG is same as DWORD, so not much help there...

bitcoin:
Thank you Pelle.

DWORD64 is equ DWORD_PTR in 64bit? Or this is different data types?

Pelle:

--- Quote from: bitcoin on June 23, 2020, 03:52:03 PM ---DWORD64 is equ DWORD_PTR in 64bit? Or this is different data types?

--- End quote ---
It's effectively the same thing. Using DWORD_PTR for an address type is *maybe* more informative, but who knows...?

EDIT: see https://docs.microsoft.com/en-us/windows/win32/winprog/windows-data-types

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