alf/alfcompat.cpp


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#include "alfpriv.h"

ALFCompatFunctions *
ALF_CreateCompatFuncTable(void)
{
    ALFCompatFunctions *compatfn = (ALFCompatFunctions*)HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY|HEAP_GENERATE_EXCEPTIONS, sizeof(ALFCompatFunctions));

#define COMPAT(dll, entrypoint, ordinal) \
    do { \
        FARPROC p = GetProcAddress(GetModuleHandleA(#dll), #entrypoint); \
        if (!p && ordinal) \
            p = GetProcAddress(GetModuleHandleA(#dll), (char*)ordinal); \
        CopyMemory(&compatfn->entrypoint, &p, sizeof(void*)); \
    } while (0)

    COMPAT(comctl32.dll, SetWindowSubclass, 410);
    COMPAT(comctl32.dll, DefSubclassProc, 413);
    COMPAT(comctl32.dll, RemoveWindowSubclass, 412);

#undef COMPAT

    return compatfn;
}