Can I modify winuser.h ?

[olivier]

Hello,
I try to use a win32 app that use the user32 function:
BOOL WINAPI FlashWindowEx(PFLASHWINFO pfwi )

the implemented function in Wine is:
BOOL WINAPI FlashWindow( HWND hWnd, BOOL bInvert)

My question, can I modify the user32.spec and the winuser.h to add this
function with?

BOOL WINAPI FlashWindowEx(PFLASHWINFO pfwi )

/* FlashWindowEx structure and flags*/
typedef struct {
    UINT	cbSize;
    HWND	hwnd;
    DWORD	dwFlags;
    UINT	uCount;
    DWORD 	dwTimeout;
} FLASHWINFO, *PFLASHWINFO;

#define FLASHW_STOP		0x01
#define FLASHW_CAPTION		0x02
#define FLASHW_TRAY		0x04
#define FLASHW_ALL		FLASHW_CAPTION | FLASHW_TRAY
#define FLASHW_TIMER		0x10
#define FLASHW_TIMERNOFG	0x20

And an other question. After modifying the user32.spec to rebuild, do I
just type make?

Merci,
Olivier