I experimented a bit with that function, but at the time was unable to unveil a few details and had to give up due to time constraints.Īctually, I was on the right track. I found a mysterious function called WmsgSendMessage exported by a not less mysterious WMsgAPI.dll. This is a utility bundled with Windows, intended to provide some functionality for users with limited mobility, and it can produce Ctrl-Alt-Del through the virtual keyboard. Given that state of affairs, a couple of years ago I made some investigation on my own by analyzing the import table of OSK.EXE. In most cases, requests deserved no reply from Microsoft, I was one of those cases! I don’t know what was their selection criteria, but I have legal software and I don’t live in a country for which export restrictions are enforced. Microsoft announced that would provide a C library called SASLIB for people requesting it from a certain email address. I don’t know who found it, but it works pretty well. I never figured out the reason Microsoft hides and undocuments the procedure.įor Windows XP and older releases all the way down to Windows NT 3.51 a solution has been found that spreaded all over the internet. Simulating Ctrl-Alt-Del in code has always been a nightmare for developers, namely for logins with remote access software or other scenarios.
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