摘要：
Definitions / Descriptionsform：http://pinvoke.net/default.aspx/Constants/WM.html（网站不错）WM_ACTIVATE0x6The WM_ACTIVATE message is sent when a window is being activated or deactivated. This message is sent first to the window procedure of the top-level window being deactivated; it is then sent to the wi 阅读全文
