Help at carry of class C ++ in ASM, can I use an object oriented approach to assembly language coding or I must convert my code to a procedural form instead?

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Alex BP

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Posts: 5
Member No.: 40
Joined: 29-May 04

Prompt please as on ASM the following code will look:

CODE

int controlsInit = FALSE;

BOOL WINAPI DllMain(HINSTANCE hinstDLL,ULONG fdwReason,LPVOID lpvReserved)
{

hInstance = hinstDLL;

if (! controlsInit) {

controlsInit = TRUE;

InitCustomControls(hInstance);

InitCommonControls();

}

return(TRUE);

}

__declspec(dllexport) ClassDesc *LibClassDesc(int i) {

switch(i) {

case 0: return &MeltCD;

default: return 0;

}

}

class MeltClassDesc : public ClassDesc {

public:

int IsPublic() { return TRUE; }

void * Create(BOOL loading=FALSE) { return new MeltMod(); }

const TCHAR * ClassName() { return _T("Melt"); }

SClass_ID SuperClassID() { return OSM_CLASS_ID; }

Class_ID ClassID() { return Class_ID(0xA1C8E1D1, 0xE7AA2BE5); }

const TCHAR* Category() { return _T(""); }

};

static MeltClassDesc MeltCD;

QvasiModo

Just your regular village idiot

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Posts: 462
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Joined: 13-May 04

The DllMain part is simple, but the rest is OOP stuff and I'm not familiar with it, sorry

CODE

.data
hInstance dd 0
controlsInit dd FALSE

.code
DllMain proc hinstDLL:DWORD, fdwReason:DWORD, lpvReserved:DWORD
mov eax,hinstDLL
mov hInstance,eax
.if !controlsInit
mov controlsInit,TRUE
invoke InitCustomControls,hInstance
invoke InitCommonControls
.endif
mov eax,TRUE
ret

Although I would check that fdwReason equals DLL_PROCESS_ATTACH before oding any of that stuff in the code. Take a look at the description of DllEntryPoint at MSDN (http://msdn.microsoft.com).


andrew_k
Active Member Group: Members Posts: 41 Member No.: 34 Joined: 25-May 04	Hi Alex, The following is not object oriented. Instead it converts your code to a procedural form. If you are set on an object oriented approach to assembly language coding check out the object oriented forum at: http://board.win32asmcommunity.net/index.php ... MeltClassDesc struct 4 ; MeltClassDesc data MeltClassDesc ends .data controlsInit DWORD FALSE .data? hinstance DWORD ? MeltCD MeltClassDesc <?> ; static MeltClassDesc MeltCD .code DllEntry proc hInstDLL:HINSTANCE, fdwReason:DWORD, lpvReserved:DWORD push hinstDLL pop hInstance mov eax, controlsInit or eax, eax jz EXIT mov controlsInit, TRUE push hInstance call InitCustomControls call InitCommonControls EXIT: mov eax, TRUE ret DllEntry endp LibClassDesc proc i:DWORD mov eax, i or eax, eax jnz EXITLIBCLASS lea eax, MeltCD ret EXITLIBCLASS mov eax, 0 ret LibClassDesc endp IsPublic proc mov eax, TRUE ret IsPublic endp Create proc loading:DWORD ; no default value... call Get ProcessHeap push sizeof MeltMod push 0 push eax call HeapAlloc ; Note no constructor for MeltMod object called. ; The C++ compiler inserts this call in your C++ code during compilation ; If you need to initialise this memory you will have to explicitly do so yourself ret Create endp ... etc etc Note you will have to create a def file with something like the following: LIBRARY MeltMod EXPORTS LibClassDesc and include it in your .wap project. This has the same effect as using __declspec(dllexport) in (Microsoft) C++, that is the function will be exported for use by any application loading your .dll. Hope this is of some use to you, Cheers, Andrew

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