Works great! But I have a question about the 0.chr line: Why do you need
to append 8 extra bytes to achieve a size of 28 bytes? I guess, it has
something to do with C’s array treatment?
As you know, the INPUT structure defined like this:
typedef struct tagMOUSEINPUT {
LONG dx;
LONG dy;
DWORD mouseData;
DWORD dwFlags;
DWORD time;
ULONG_PTR dwExtraInfo;
} MOUSEINPUT, *PMOUSEINPUT;
typedef struct tagKEYBDINPUT {
WORD wVk;
WORD wScan;
DWORD dwFlags;
DWORD time;
ULONG_PTR dwExtraInfo;
} KEYBDINPUT, *PKEYBDINPUT;
typedef struct tagHARDWAREINPUT {
DWORD uMsg;
WORD wParamL;
WORD wParamH;
} HARDWAREINPUT, *PHARDWAREINPUT;
The sizeof(MOUSEINPUT) is 24, sizeof(KEYBDINPUT) is 16, and
sizeof(HARDWAREINPUT) is 8.
Therefore, sizeof(INPUT) = sizeof(DWORD) + maxsizeof(union) = 4 + 24 =
28.
typedef struct tagMOUSEINPUT {
LONG dx;
LONG dy;
DWORD mouseData;
DWORD dwFlags;
DWORD time;
ULONG_PTR dwExtraInfo;
} MOUSEINPUT, *PMOUSEINPUT;
typedef struct tagKEYBDINPUT {
WORD wVk;
WORD wScan;
DWORD dwFlags;
DWORD time;
ULONG_PTR dwExtraInfo;
} KEYBDINPUT, *PKEYBDINPUT;
typedef struct tagHARDWAREINPUT {
DWORD uMsg;
WORD wParamL;
WORD wParamH;
} HARDWAREINPUT, *PHARDWAREINPUT;
The sizeof(MOUSEINPUT) is 24, sizeof(KEYBDINPUT) is 16, and
sizeof(HARDWAREINPUT) is 8.
Therefore, sizeof(INPUT) = sizeof(DWORD) + maxsizeof(union) = 4 + 24 =
28.
Regards,
Park H.
Thank you again, now I’ve got the point. One last question: The size of
the MOUSEINPUT struct is 8 + 8 + 4 + 4 + 4 = 28 I see, so am I right in
thinking that the pointer isn’t important for this computation?
Otherwise, since it’s an unsigned long, it should have a size of 8 also,
what makes the struct a size of 36 bytes? Or is this ignored because of
passing in nil later?
You see, I’m not really good in working with C structs.
Thank you again, now I’ve got the point. One last question: The size of
the MOUSEINPUT struct is 8 + 8 + 4 + 4 + 4 = 28 I see, so am I right in
thinking that the pointer isn’t important for this computation?
Otherwise, since it’s an unsigned long, it should have a size of 8 also,
what makes the struct a size of 36 bytes? Or is this ignored because of
passing in nil later?
You see, I’m not really good in working with C structs.
