winlogon

I am trying to create a service with C# that launches a process that can be displayed on the Windows XP Logon screen. I found some code that is doing this in C++. The C++ code is for a service that creates another process with STARTUPINFO.lpDesktop set to "WinSta0\WinLogon". The created process is then displayed to the Windows Logon Screen. I can't seem to find a way to specify the 'desktop' of a new process in C# using System.Diagnostic.Process class. Does anyone know how to do this with C#? The solution was to call the C++ Win32 API function CreateProcess from kernel32.dll from the C# code.

I want to take a screenshot of desktop while Windows is locked (with Win+L). Standard methods make a black screen, with code of pixel: COLORREF color = GetPixel(hdc, x, y); equal -1. Neither a user mode program nor a service could capture a useful image. Any ideas? GetPixel and BitBlt won't work when the desktop isn't physically displayed on the monitor. You may have some luck capturing individual windows with PrintWindow . However, not all applications respond to PrintWindow calls the same way, so you may see glitches and/or blackness. You'll also need to capture each window individually. 来源：

I was wondering if there is a simple way for a service to create a process in user session? My service is running as a user(administrator) account and not as a LocalSystem acount, therefore i can't use the WTSQueryUserToken function. i have tried calling OpenProcessToken(GetCurrentProcess,TOKEN_ALL_ACCESS,TokenHandle); but when i use this token to run CreateProcessAsUser(TokenHandle,.....) my process is still running in session 0. how can i resolve this issue? I'm using an Ole automation so i don't really care on which session the process will be running on, as long it is not the session 0 -

I am writing a remote desktop application like TeamViewer in C++ on Windows 7 (x64) and Windows 8 (x64). 1. What made me stuck I have implemented the mouse input and keyboard input by using SendInput(). I found SendInput() worked perfectly when the process ran under winsta0\desktop . But after the user locked the computer or the screensaver launched, it didn’t work. If I run the process under winsta0\winlogon , SendInput() doesn’t work under winsta0\default . 2. What I have tried I have tried using SetThreadDesktop() to switch the process from winsta0\desktop to winsta0\winlogon , but I got