Data type size in x64 << Back



This is just a quick reference for the size of the common data types in the Win32 and Win64 worlds.

Data type32 bit64 bit
byte 11
char 11
bool 11
boolean 11
short 22
int 44
long 44
float 44
double 88
BYTE 11
BOOLEAN 11
WORD 22
SHORT 22
DWORD 44
INT 44
LONG 44
HRESULT 44
BOOL 44
FLOAT 44
DOUBLE 88
LPARAM 48
WPARAM 48
LONGLONG 48
DWORD_PTR48
LONG_PTR 48
LPVOID 48
DWORDLONG48
HANDLE 48
HWND 48



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