Addresses of Delphi and C++ WinAPI functions differ when they shouldn't

In C++, if you try to get a function pointer of a Windows API function, that pointer points to the same address you would get if you used GetProcAddress on the name of that function and it's respective module. For example:

&MessageBoxA == GetProcAddress("User32.dll", "MessageBoxA");

would be true. However, in Delphi, that is not the case. This code:

@MessageBoxA = GetProcAddress('User32.dll', 'Messa开发者_运维问答geBoxA');

Would not be true, and in my test, @MessageBoxA was 0x0040bd18 while the equivalent GetProcAdress returned what the test's C++ counterpart did, 0x7550fd1e.

So now for my question: why?

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The address with the 0x004.. is the address of the declaration of the imported api function (in windows.pas for MessageBoxA) to have it statically loaded, hence it will of course reside in the executable image (which have a base address of 0x00400000 by default). The actual function called is in the image of the library loaded to the memory of that function resides in. You can get the image base of the library with GetModuleHandle. In your case it will probably be something with 0x75... With the C++ test, you're probably linking with the runtime library, so the function is dynamically loaded anyway.