SetWindowLong 提示 ERROR_INVALID_INDEX
当我们在x64平台使用SetWindowLong /GetWindowLong 的时候都会提示ERROR_INVALID_INDEX，这是因为这两个函数不支持X64。所以我们需要使用SetWindowLongPtr/GetWindowLongPtr。这样就ok了 来源： https://blog.csdn.net/CAir2/article/details/98766511
setwindowlong
How do I pinvoke to GetWindowLongPtr and SetWindowLongPtr on 32-bit platforms?
问题 I want to P/Invoke to GetWindowLongPtr and SetWindowLongPtr, and I\'m seeing conflicting information about them. Some sources say that, on 32-bit platforms, GetWindowLongPtr is just a preprocessor macro that calls GetWindowLong, and GetWindowLongPtr doesn\'t exist as an entry point in user32.dll. For example: The pinvoke.net entry for SetWindowLongPtr has a static method that checks IntPtr.Size and then calls either SetWindowLong or SetWindowLongPtr, with a comment saying that \"legacy OSes