8/17/2023 0 Comments Disable idle timer windows 10Install a dongle that simulates mouse jiggle.(Assuming you care only when your application is the active application.) Don't let the WM_SYSCOMMAND with SC_SCREENSAVE be passed onto DefWindowProc.Put up a computer-based training window (which requires hooks).SetThreadExecutionState with ES_CONTINUOUS (as described in other answers). So, if it weren't for the caveat, your choices would be: That seems to apply even if you use the SetThreadExecutionState with ES_CONTINUOUS. Windows Vista and later: If password protection is enabled by policy, the screen saver is started regardless of what an application does with the SC_SCREENSAVE notification. The active application receives the WM_SYSCOMMAND message with the wParam parameter set to the SC_SCREENSAVE value, but it does not pass the message to the DefWindowProc function.The active application is not a Windows-based application.Windows does not start the screen saver if any of the following conditions exist: Public Structure MOUSEKEYBDHARDWAREINPUT This comes from : Public Declare Function SendInput Lib "user32" (ByVal nInputs As Integer, ByRef pInputs As INPUT, ByVal cbSize As Integer) As IntegerĬonst KEYEVENTF_EXTENDEDKEY As UInt32 = &H1 The code to put in the Tick event: Dim i(0) As INPUT It's sufficient to move the mouse by a delta of 0,0, no real movement. I put a call to SendInput inside of a Timer that triggers every 50 seconds (just less than the minimum screensaver timeout of 60 seconds). SendInput works! No flash of the screensaver. Then I peeked at the code of "JiggleMouse" mentioned elsewhere in this question. Then I tried using user32.dll's SetCursorPos and GetCursorPos. The screensaver turns on for only a moment, not long enough to require a password. The cursor jiggles back and forth and after 1 minute the screensaver flashes on for a short instance and then turns off. I also put this into a Timer's tick event, every 1000 milliseconds: Static dir As Integer = 4Ĭursor.Position = Cursor.Position + New Size(dir, dir) As commented, it works when there is no screensaver password but fails if the screensaver password is active. I tried capturing SC_SCREENSAVE and returning -1 in VB. For testing, I set the screensaver to 1 minute and required a password.
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