Search code examples
windowsdllordinalsordinal

How can I call a exported function using ordinal number

If a dll exports some functions and the functions have only ordinal numbers, how can I call the functions?

Give me a short example please.

Solution

  • 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));