Get The function parameter

[Farabi]

I have a function like this

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MyFunction proc x:dword,y:dword,status:dword

ret
MyFunction endp

MyFunction2 proc x:dword,y:dword,status:dword

ret
MyFunction2 endp



And I put the address as a linier value

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Mov esi,virtual_table
mov eax,offset MyFunction
mov edc,offset MyFunction2
mov [esi],eax
mov [esi+4],edx


If I want to call the function, how to pass the parameter?
I have try to use pop but it failed.

[hutch--]

Unless I have missed something, if the procedures are normal STDCALL, you push them in reverse order then call the procedure if you want manual control of wat you are calling. Get the address from the virtual table for the proc you want to call, push the arguments in reverse order like normal and call the address.

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push status
push y
push x
call MyFunctionAddress


[Tedd]

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call DWORD PTR [esi+8]
..or whichever offset you want.

The parameters will go on the stack in reverse order, as usual.

I don't know if there is a way to use invoke with a function pointer.

[hutch--]

Sure is, I have published a couple of new ones recently but there is an existing on in the masm32 main macro file. They use EXTERNDEF format.