问题
Is it possible to load a 64-bit dll into a 32-bit process ?
Generally speaking, I know it can not happen.
Yet, maybe there are some exceptions ?
回答1:
No, and neither a 64-bit process can load a 32-bit DLL.
If you're on a 64 bit OS, you can load the DLL in a 64-bit process and have it communicate with your 32-bit process through IPC.
If you're on a 32 bit OS, you're out of luck.
回答2:
But new computer bought today at least have 4G ram. We cannot prevent using 64-bit OS to avoid problem. We must face 64-bit positively! Server 2008 R2 only have 64-bit. Issues around EXE AnyCPU / x86, 32-bit COM / C++ dll must be handled. Ideally compile both 32 and 64 bit COM / C++ dll.
回答3:
In .NET, it is possible to load a 64-bit DLL into a 32-bit process for reflection only. For details please check "Analyze 64-bit DLL from within T4 template in Visual Studio (32-bit) using Reflection".
I know that this is a special case, but I thought I'd add it anyway because it might help others looking for a similar solution as me.
来源：https://stackoverflow.com/questions/8787556/is-it-possible-to-load-a-64-bit-dll-into-a-32-bit-process