>I want know how can I do to check if another application it's open,
>for example: MSPaint.EXE
>
>I'm working with a form that contains a image control and when I click
>in that MSPaint is open, if user click again, I don't want open MSPaint again.

Hi Barros,

You can user GETOBJECT function to get current instance of an application
For example,
To get the Current Instance of MS Word

LOCAL loword
loword = GETOBJECT('word.basic')

For further detail, See the help of GETOBJECT Function

Bye