SysInfo

Description

Short story: Catch Windows device notifications, system settings updates, and power status.

Longer description from old site: click here.

To be edited...

Published

This sample, or the one from which it originally derived, was published (or at least peripherally mentioned) in the following article(s):

• No Such Thing as a Windowless VB App, Classic VB Corner, VSM Online, November 2009
• Listening to ThunderMain, Classic VB Corner, VSM Online, December 2009
• Monitoring System Power Status, Classic VB Corner, VSM Online, January 2010

APIs Usage

This sample uses the following API calls:

Module	Library	Function
CSysInfoDevice.cls	kernel32 user32	CloseHandle CreateFile RtlMoveMemory RegisterDeviceNotification UnregisterDeviceNotification
CSysInfoGeneral.cls	kernel32	RtlMoveMemory
CSysInfoPower.cls	kernel32	GetSystemPowerStatus RtlMoveMemory
MHookXP.bas	comctl32 kernel32	DefSubclassProc (#413) GetWindowSubclass (#411) RemoveWindowSubclass (#412) SetWindowSubclass (#410) lstrlen OutputDebugString RtlMoveMemory
MSysInfo.bas	kernel32 user32	RtlMoveMemory EnumThreadWindows GetClassName GetWindowLong

Don't see what you're looking for? Here's a complete API cross-reference.

Download

Please, enjoy and learn from this sample. Include its code within your own projects, if you wish. But, in order to insure only the most recent code is available to all, I ask that you don't share the sample by any form of mass distribution. Download SysInfo.zip, 24Kb, Last Updated: Tuesday, November 17, 2009

See Also

The following resources may also be of interest:

• HookXP - Demonstrates native Windows subclassing method with no risk of improper teardown. Very flexible!

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