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.NET Forum / Windows Forms / WinForm General / December 2004Time of inactivity
I have a vb.net application that starts with a login form. I would like to show it again after 5 minutes of inactivity of the application. Now, I use a timer and I start it in the application.idle event, but it doesn't work fine, because it shows the login form every 5 minutes of activity or inactivity of the application, without differences... How can I solve it ???? Many thanks nq Seems like there are a number of variables involved here that you didn't specify so I'm going to approach this as if you only had a single form that was only monitoring itself (as opposed to your whole system). It seems to me that you should probably put the timer into its own class (separate from the forms of the application). That class should also provide event handlers for the keyboard and mouse events for the form in your application. When the form is instantiated I'd link up the event handlers to the events in the form. The form instantiation code should also start up the timer. Now anytime one of the event handlers fires off, I'd reset the timer. Also be sure to turn the KeyPreview property for the form on. This concept should be able to be expanded to larger application. Hope it helps. Have A Better One! John M Deal, MCP Necessity Software > I have a vb.net application that starts with a login form. > I would like to show it again after 5 minutes of inactivity of the [quoted text clipped - 7 lines] > Many thanks > nq Thanks for Your answer Mr John My timer is in a separate module and I thought at Your solution. It'll surely work fine, but I hoped there was a different way, as a general event to put in the application, to avoid to monitor the mouse event and the key event for every form... I know I can do it with a general routine instantiated with the addhandler, addressof method... Many thanks for Your help... Bye nq > Seems like there are a number of variables involved here that you didn't > specify so I'm going to approach this as if you only had a single form [quoted text clipped - 28 lines] > > Many thanks > > nq Look at the Application.AddMessageFilter method. You can put in a hook at the application level. Look for mouse and keyboard messages - make note of the time that you last saw one of these messages. When your timer fires, check the time since you last saw a keyboard or mouse message and then prompt if the TimeSpan is over 5 minutes. Let me know if you need any further help. Paul > Thanks for Your answer Mr John > My timer is in a separate module and I thought at Your solution. [quoted text clipped - 41 lines] >> > Many thanks >> > nq GREAT !!! This is the solution I was looking for... I implemented a routine for the AddMessageFilter method: It only stops and starts the timer every time a windows message (with msg different from 275: the timer tick event) is processed in my application, in order to reset the timer and restart its time. I've only a little curiosity left: What' s the difference between the timer.start method and the timer.enabled=true instruction ?? It seems they start the timer in the same way resetting its time... so seems there's no way to stop and restart the timer without reset the time elapsed... Is it right ??? Many thanks bye nq > Look at the Application.AddMessageFilter method. > [quoted text clipped - 53 lines] > >> > Many thanks > >> > nq Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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