>I assign different keys for different progress bars to increase or decrease
> the values. when I press two or more keys at a time then the values of
> progress bar would be change for those keys which were pressed but it give
> value change only for one key.Plz Suggest software control solution
When you detect a key you're interested in, you can use the Windows API to
see which other keys are pressed... here's a sample.
Display State of All Keys
http://www.vbsight.com/Code.htm#KeyStates

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Ken Halter - MS-MVP-VB - http://www.vbsight.com
DLL Hell problems? Try ComGuard - http://www.vbsight.com/ComGuard.htm
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