How can I call a exported function using ordinal number

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The documentation for GetProcAddress explains that you pass the integer ordinal in the low-order word of the lpProcName parameter. The MAKEINTRESOURCE macro can actually be used to make this a little easier:

int ordinal = 123;
HANDLE dll = LoadLibrary("MyDLL.dll");
FARPROC fn = GetProcAddress(dll, MAKEINTRESOURCE(ordinal));

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