>hello everyone,
>
>in the form designer i have set a form to modal, and added some codes on it.
>
>then I run the form in another program by "do form MyForm to MyVar", it says I can't use the "to" clause because MyForm is not modal...

Sounds modeless to me. Is this a subclass of something? Did you use the Form wizard to make it? Are you using a framework? What version (and build #) of VFP are you using?

Put code in the init that you can put a break point, check the state in the debugger.

>also when i run the .exe, the form disappear immediately after it show up -- exactly the same as a modeless form..

Could also be due to INIT() returning .F. Or some control on the form failing to instantiate can case the whole form to die, too.

>But why? What did I do that cause the modal form to act as a modeless one? Any idea please?

DO FORM MyForm Name linked NOSHOW
myForm.show(1)

Would do it.