>Hi,
> I would like to develop task schedule which will launch the particular Application on time set. Any effective algorithm to compare this?
>
>Thank you

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You could use the task scheduler from MS.
And otherwise you could create your own.
For exapmle with a timer control that checks if it is time to start theapp every ... seconds.
And otherwise you could use a do .. enddo loop like:

do while .....
  inkey(.. seconds)
enddo

(inkey is placed there because otherwise you keep your valuable proccesor time busy with doing nothing. <g>)