wine/include/callback.h
Alexandre Julliard 4e951ea25b Check all Callouts function pointers for NULL before using them.
Don't load USER dll if not needed by the application.
2000-11-08 22:47:53 +00:00

81 lines
2.7 KiB
C

/*
* Callback functions
*
* Copyright 1995 Alexandre Julliard
*/
#ifndef __WINE_CALLBACK_H
#define __WINE_CALLBACK_H
#include "windef.h"
#include "winnt.h"
#include "wingdi.h"
#include "wine/winuser16.h"
extern void SYSDEPS_SwitchToThreadStack( void (*func)(void) ) WINE_NORETURN;
extern int SYSDEPS_CallOnLargeStack( int (*func)(void *), void *arg );
#define CALL_LARGE_STACK( func, arg ) \
SYSDEPS_CallOnLargeStack( (int (*)(void *))(func), (void *)(arg) )
typedef void (*RELAY)();
extern FARPROC THUNK_Alloc( FARPROC16 func, RELAY relay );
extern void THUNK_Free( FARPROC thunk );
extern BOOL THUNK_Init(void);
extern void THUNK_InitCallout(void);
typedef struct
{
BOOL WINAPI (*PeekMessageA)( LPMSG, HWND, UINT, UINT, UINT );
BOOL WINAPI (*GetMessageA)( MSG*, HWND, UINT, UINT );
LRESULT WINAPI (*SendMessageA)( HWND, UINT, WPARAM, LPARAM );
BOOL WINAPI (*PostMessageA)( HWND, UINT, WPARAM, LPARAM );
BOOL WINAPI (*TranslateMessage)( const MSG *msg );
LONG WINAPI (*DispatchMessageA)( const MSG* msg );
BOOL WINAPI (*RedrawWindow)( HWND, const RECT *, HRGN, UINT );
WORD WINAPI (*UserSignalProc)( UINT, DWORD, DWORD, HMODULE16 );
void WINAPI (*FinalUserInit16)( void );
HQUEUE16 WINAPI (*InitThreadInput16)( WORD, WORD );
void WINAPI (*UserYield16)( void );
WORD WINAPI (*DestroyIcon32)( HGLOBAL16, UINT16 );
DWORD WINAPI (*WaitForInputIdle)( HANDLE, DWORD );
DWORD WINAPI (*MsgWaitForMultipleObjects)( DWORD, HANDLE *, BOOL, DWORD, DWORD );
HWND WINAPI (*WindowFromDC)( HDC );
INT WINAPI (*MessageBoxA)( HWND, LPCSTR, LPCSTR, UINT );
INT WINAPI (*MessageBoxW)( HWND, LPCWSTR, LPCWSTR, UINT );
} CALLOUT_TABLE;
extern CALLOUT_TABLE Callout;
#include "pshpack1.h"
typedef struct tagTHUNK
{
BYTE popl_eax; /* 0x58 popl %eax (return address)*/
BYTE pushl_func; /* 0x68 pushl $proc */
FARPROC16 proc WINE_PACKED;
BYTE pushl_eax; /* 0x50 pushl %eax */
BYTE jmp; /* 0xe9 jmp relay (relative jump)*/
RELAY relay WINE_PACKED;
struct tagTHUNK *next WINE_PACKED;
DWORD magic;
} THUNK;
#include "poppack.h"
#define CALLTO16_THUNK_MAGIC 0x54484e4b /* "THNK" */
#define DECL_THUNK(aname,aproc,arelay) \
THUNK aname; \
aname.popl_eax = 0x58; \
aname.pushl_func = 0x68; \
aname.proc = (FARPROC) (aproc); \
aname.pushl_eax = 0x50; \
aname.jmp = 0xe9; \
aname.relay = (RELAY)((char *)(arelay) - (char *)(&(aname).next)); \
aname.next = NULL; \
aname.magic = CALLTO16_THUNK_MAGIC;
#endif /* __WINE_CALLBACK_H */