>Hi,
>
>I am evaluating some wireless device with VFP6 SP5 written
>application.
>
>When my application running under the VFP IDE, it working fine.
>However, when I compiled it as executable file, it does not
>work. I am doing some RS232 serial communication with the
>wireless device.
>
>It seem like after compilation, my executable
>application output data to RS232 is different from those output data
>when in IDE mode by tapping the signal from my application to monitor it.
>
>I am confused, any advise or comment to assist me.
>
>Thank in advance.

Review the help topics for _VFP.AutoYield and DOEVENTS. You could be having problems with wait states and ActiveX control processing.

HTH.