If int HCE300_Read(int TrackNo, char *ReadData); is the prototype, then it uses the default calling convention. It my understanding that's __cdecl for MS compilers. Win32::API uses the __stdcall calling convention since that's what the Win32 API (kernel32.dll, etc) uses.

Argument-passing orderStack-maintenance responsibility
__stdcallRight to leftCalled function pops its own arguments from the stack
__cdeclRight to leftCalling function pops the arguments from the stack

Win32::API expects the DLL function to reset the stack, but the DLL function expects its caller to reset the stack.

In reply to Re^3: Correct call for dll with Win32::API by ikegami
in thread Correct call for dll with Win32::API by walto

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