>Hi Nick,
>
>>the form becomes visible and VFP comes up with an error "Cannot change modality of a visible form"
>
>The following works for me in VFP5 and VFP6/SP3 on Windows 2000. I can use the buttons to switch between modal and modeless. Does it work for you?
>

>Public oForm
>oForm = CreateObject("SwitchForm")
>oForm.Show()
>
>Define Class SwitchForm as Form
>	Add Object cmdModal as CommandButton With Caption="Modal"
>	Add Object cmdModeless as CommandButton With ;
>		Caption="Modeless", ;
>		Top = 50
>	Procedure cmdModal.Click
>		Thisform.Hide()
>		Thisform.Show(1)
>		Thisform.Show(2)
>	Procedure cmdModeless.Click
>		Thisform.Hide()
>Enddefine

>Christof

Hi Christof,
It works on NT4. It bombs if you have
* cmdModeless.Click
Thisform.Hide()
Thisform.Show(1)
Thisform.Show(2)
which I occasionally did while copying the code around.