I haven’t tried it myself, but I found this on google Process.Start(@”C:\WINDOWS\system32\rundll32.exe”, “user32.dll,LockWorkStation”); edit: I tried it, and it works! edit2: Here’s a solution using user32.dll that doesn’t start an external process. using System.Runtime.InteropServices; declare a method like this: [DllImport(“user32.dll”)] public static extern bool LockWorkStation(); and then call LockWorkStation();. Voilà
[DllImport(“user32.dll”, CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)] public static extern void mouse_event(uint dwFlags, uint dx, uint dy, uint cButtons, UIntPtr dwExtraInfo); private const uint MOUSEEVENTF_LEFTDOWN = 0x02; private const uint MOUSEEVENTF_LEFTUP = 0x04; private const uint MOUSEEVENTF_RIGHTDOWN = 0x08; private const uint MOUSEEVENTF_RIGHTUP = 0x10; You should Import and Define these Constant’s to work with … Read more
It appears that when the MessageBox has an icon, FindWindowEx returns the text of the first child (which is the icon in this case) hence, the zero length. Now, with the help of this answer, I got the idea to iterate the children until finding one with a text. This should work: IntPtr handle = … Read more
You aren’t setting the flags and scan fields, depending on the keystrokes desired, you will need to set these correctly to get the OS to recognize the keys correctly. You might consider using the Input Simulator library, since it already does what you want and you don’t have to recreate the wheel. Just make sure … Read more
A method to hook a Windows Form to another process (Notepad, in this case) and follow the movements of the process’ Main Window, to create sort of a Toolbar that can interact with the process, using SetWinEventHook(). To get the hooked Window bounds, GetWindowRect() is not recommended. Better call DwmGetWindowAttribute() passing DWMWA_EXTENDED_FRAME_BOUNDS as the DWMWINDOWATTRIBUTE, … Read more
System Displays disposition and VirtualScreen In a Windows System, the Primary Screen (programming perspective) is the Display device which has its upper left corner position set at Point(0,0). This implies that the Displays positioned on the left of the Primary Screen, will have negative X coordinates (the Y coordinate could be negative if the Display … Read more