????? ??????? ??? 16-?? ?? ??? 32 ?? ??? Windows 95 ?Windows 98 ?Windows Me

1. ????? ???????? ????? thunk.
2. ????? DLL 32-??.
3. ????? DLL 16-??.

???? ??? ?????? | ????? ???????

                         +------------+
                         | 32to16.thk |
                         +------------+
                               |
                         +------------+
                         | 32to16.asm |
                         +------------+
                           /         \ 
                  -DIS_32 /           \ -DIS_16
                        /              \ 
                  +-----------+  +-----------+
                  | 32THK.obj |  | 16THK.obj |
                  +-----------+  +-----------+
                        /                 \ 
        +-------+    +-------+             +-------+
        | APP32 | -> | DLL32 | -- THUNK -- | DLL16 |
        +-------+    +-------+             +-------+
				

????? ????? ?????? Thunks ????

• Microsoft ?? Visual C++ ??????? 1.5 x ?????? ??????? ??????? (16-??) ?? ???? 16-?? ?? ????? thunk. ?? ???? 16-?? thunk DLL 16-??.
• 2.x ??????? Microsoft Visual C++ ?? ?????? ??????? ??????? ?????? ?????? 32-?? ?? thunk ?? (32-??) ????. ?? ???? 32-?? thunk DLL 32-??.
• ??????? thunk (Thunk.exe) ?? SDK Win32 Microsoft ?????? ??? ????? thunk ??????? ??????.
• Microsoft ????? ???? (MASM) ??????? 6.1 ?? ???? ?? ????? ????? ?????? ??????? thunk ??? ???????.
• 16-?? ??? Rc.exe ?? ?????? BINW16 SDK Win32 Microsoft ?????? ??? ??? ????? thunk 16-?? DLL ??????? 4.0.

????? ?????? ??? Thunk

   enablemapdirect3216 = true;

   void MyThunk16()
   {
   }
				

   C   language:  void WINAPI MyThunk16(void);
   C++ language:  extern "C" void WINAPI MyThunk16();
				

   enablemapdirect3216 = true;

   typedef int   BOOL;
   typedef char *LPSTR;

   BOOL MyThunk16(LPSTR lpstrInput, LPSTR lpstrOutput)
   {
      lpstrInput  = input;    // optional; input is default
      lpstrOutput = output;
   }
				

   enablemapdirect1632 = true;

   typedef unsigned int UINT;
   typedef char *LPSTR;

   typedef struct _POINT {
      UINT x;
      UINT y;
   }POINT, *LPPOINT;

   typedef struct _CIRCLE {
      POINT center;
      UINT  radius;
   }CIRCLE, *LPCIRCLE;

   void MyThunk32( LPCIRCLE lpCircleInOut)
   {
      lpCircleInOut = inout;
   }
				

???????? ?????? ??????? Thunk

????? DLL 32-??

1. ??? ????? ??????? ???? ??????? ?????? ?????? ??????? ??????? Thunk ?????? thk_ThunkConnect32 ?? ???? ?? ??? (dwReason) DllMain ??? ?? ???? ??? ?? ???? DllMain DLL 32-?? ("thk" ?? ??????? ?? ??? ??????? -t ?????? ??????? ??????? Thunk):

         // prototype for function in .obj file from the thunk script
         BOOL WINAPI thk_ThunkConnect32(LPSTR     lpDll16,
                                        LPSTR     lpDll32,
                                        HINSTANCE hDllInst,
                                        DWORD     dwReason);
   
         BOOL WINAPI DllMain(HINSTANCE hDLLInst,
                             DWORD     dwReason,
                             LPVOID    lpvReserved)
         {
            if (!thk_ThunkConnect32("DLL16.DLL", "DLL32.DLL",
                                    hDLLInst, dwReason))
            {
               return FALSE;
            }
            switch (dwReason)
            {
               case DLL_PROCESS_ATTACH:
                  break;
   
               case DLL_PROCESS_DETACH:
                  break;
   
               case DLL_THREAD_ATTACH:
                  break;
   
               case DLL_THREAD_DETACH:
                  break;
            }
            return TRUE;
         }
   						

2. ?? ?????? ?????? ??????? ?? ?????? ????? ??? ????? (.def) ?????? ??????? ?? DLL 32-??. ??? ???? ??????:

         
      thk_ThunkData32
   						

3. ????? ????? ???? ?????? ??????? Win32. ????? ??? ??????? ??? ????? (.def) ?????? ??????? DLL 32 ?? ?? ?????? ???????? __declspec(dllexport). ???? ?? ?? ??? ??????? ?? ??????? ???????? __stdcall (?? WINAPI). ??? ??? ????? DLL 32-?? ?? C++ ? ???? ?? ????? ??????? ??? extern "C" ?????.
4. ????? ???????? ????? thunk ??? ??? (??? ??? ?????? ??????? ???????):

         thunk -t thk 32to16.thk -o 32to16.asm
   						

5. ?? ?????? ??? ??? ??????? ??????? ?? ??? ?????? ??????? ??????? Thunk ????? ????? 32-?? ????. ??? ???? ??????:

         ml /DIS_32 /c /W3 /nologo /coff /Fo thk32.obj 32to16.asm
   						

6. ??? ??? ?????? ??????? ?????? ???? ?? DLL 32-??.
7. ?????? ??????? Thunk32.lib ???? ?? DLL 32-??. ??? ?? ????? ????????? 32-?? ???????? ?? SDK Win32 ???? ????? ??? ????? ??? APIs thunking 32-?? ???? ?????? ????????? ???????? ??????? ?????? ?????? ??????? ??????? Thunk.

????? DLL 16-??

1. ???? ????? DLL 16-?? ???? "DllEntryPoint." ??? ?? ??? ?????? ?????? ??????? ???? ??????? ?????? ?????? ??????? ??????? Thunk ?????? thk__ThunkConnect16 ("thk" ?? ??????? ?? ??? ??????? -t ?????? ??????? ??????? Thunk) ?? ??? ??? ??????? DllEntryPoint:

         // prototype for function in .obj file from the thunk script
         BOOL WINAPI __export thk_ThunkConnect16(LPSTR lpDll16,
                                                 LPSTR lpDll32,
                                                 WORD  hInst,
                                                 DWORD dwReason);
   
         BOOL WINAPI __export DllEntryPoint(DWORD dwReason,
                                            WORD  hInst,
                                            WORD  wDS,
                                            WORD  wHeapSize,
                                            DWORD dwReserved1,
                                            WORD  wReserved 2)
         {
            if (!thk_ThunkConnect16("DLL16.DLL",
                                    "DLL32.DLL",
                                    hInst,
                                    dwReason))
            {
               return FALSE;
            }
            return TRUE;
         }
   						

2. ?? ?????? ?????? ??????? ?? ?????? ??????? ?? ??? ????? (.def) ?????? ??????? ?? DLL 16-??. ??? ???? ??????:

         C16ThkSL01      = KERNEL.631
         ThunkConnect16  = KERNEL.651
   						

3. ?? ?????? ?????? ??????? ?? ?????? ????? ??? ????? (.def) ?????? ??????? ?? DLL 16-??. ??? ????? THK_THUNKDATA16 ?? ??? ?????? ???? ??? ??????? ?? ????? ?????? ??????? Thunk. ?? ?? ??? ?????? ??? ?? ?????? ???????? RESIDENTNAME ??? ???? ?? ???? ?? ??? ??????.

         THK_THUNKDATA16 @1  RESIDENTNAME
         DllEntryPoint   @2  RESIDENTNAME
   						

4. ????? ????? thunk ???? ????? ??? ????? (.def) ?????? ??????? DLL 16-??. ???? ?? ?? ??? ????? ? __export __far __pascal (?? __export WINAPI). ??? ??? ????? DLL ?? C++ ? ???? ?? ????? ?? extern "C" ?????. ????????? ???? 32-?? thunk ??? ???????.
5. ????? ???????? ????? thunk ??? ??? (??? ??? ?????? ??????? ???????):

         thunk -t thk 32to16.thk -o 32to16.asm
   						

6. ?? ?????? ??? ??? ??????? ??????? ?? ??? ?????? ??????? ??????? Thunk ????? ????? 16-?? ????. ??? ???? ??????:

         ml /DIS_16 /c /W3 /nologo /Fo thk16.obj 32to16.asm
   						

7. ??? ??? ?????? ??????? ?????? ???? ?? DLL 16-??.
8. ??? ????? DLL 16-?? ??????? 4.0. ?????? ????? ?????? ?????? ??????? ??????? ?????? (Rc.exe). ???? ????? ?????? ???? ??????:
   rc-40 < ??? DLL >
   ????? ??? ??????-40 ?? ?????? "??????? ???????" ???? ??? ??????? ?? SDK Win32.
   
   ??????: ???? ?? ??????? ??? Rc.exe ?? ?????? BINW16 ???? ??? ??? ????? DLL ?? ??????? 4.0. ??? ????? Rc.exe ???? ???? ?? ??????? Microsoft Visual C++ 16-?? ????? DLL ??????? 4.0.

???? ??? ?????? | ????? ???????