Shuting down, killing services and WM_DESTROY

[drexlin]

We have an application that is supposed to run as a service. When someone shuts down the computer, the app is supposed to save the contents of the screen into a file so it can be loaded back up when the computer comes back on.

So my question is, does shuting down the computer send a WM_DESTROY message to the program if it is being run as a service? If not, why not?

Thanks!

[RedSon]

We have an application that is supposed to run as a service. When someone shuts down the computer, the app is supposed to save the contents of the screen into a file so it can be loaded back up when the computer comes back on.

So my question is, does shuting down the computer send a WM_DESTROY message to the program if it is being run as a service? If not, why not?

Thanks!

I think all applications are asked by the OS to close when the computer is shutting down. So that means that the application would get the same messages as if a user had clicked on the little X button.

[drexlin]

Well, we've tested it, and if we close the app via the X, then the message gets sent as it should. But if we shut the computer down while the service is still running, then it doesn't get sent.

Any thoughts?

[RedSon]

Well, we've tested it, and if we close the app via the X, then the message gets sent as it should. But if we shut the computer down while the service is still running, then it doesn't get sent.

Any thoughts?

Subscribe to power management events?

[drexlin]

Well, that's part of my question. What messages get sent to the app if the power button is hit? Does WM_POWERBROADCA ST get sent?

[RedSon]

Well, that's part of my question. What messages get sent to the app if the power button is hit? Does WM_POWERBROADCA ST get sent?

On mobile devices it does. I would think that the XP powermanager would be more advanced the mobile devices, so you probably want to read up on MSDN for that message.