Why are some items greyed out in Spy++'s Windows view?
问题 To modify a window of another program, I need to find a specific SysTreeView32 in it using EnumChildWindows API call. When I inspect the window using Spy++, there are a number of SysTreeView32 's in it but all are greyed out except one, which is the one I'm looking for. The following picture is an example of grey items: Why are the shown items gray and what API call does Spy++ use to know whether it should grey out an item or not? 回答1: Those are just non-visible windows - ie HWNDs that don't