how can i know when the lid of laptop is closed or opened

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i need a solution to this problem::confused:
i want a code detect when the lid of laptop closed or opened

Posted 20-Feb-10 1:27am

Hosam Ershedat

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i want a another way, if user change the action from sleep to nothing
this will fall, i think WM_DEVICECHANGE would be useful ,
but how to determine that that the device removed is monitor or something else

Posted 20-Feb-10 3:21am

Hosam Ershedat

Updated 20-Feb-10 3:26am

v2

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#realJSOP · Accepted Answer · 2010-02-20T02:44:00

You could intercept the system message that indicates that the computer is going into Sleep mode.

EDIT ====================

Unless the laptop has drivers that provide an additional system message indicating that the lid has closed, you're screwed. Beyond that, not all laptops would implement such a message, and you can't count on all of your users having the same laptop. You can only do so much.

Of course, you could probably write some driver software that helps you out, but then you get into the rather murky waters of compatibility ith ALL of the laptops ever made. Good luck with that.