摘要：
首先看一下msdn是怎样定义它们的吧，可不要搞错啊：The SetWindowLong function changes an attribute of the specified window. The function also sets the 32-bit (long) value at the specified offset into the extra window memory.Note This function has been superseded by the SetWindowLongPtr function. To write code that is compat 阅读全文
