Actually, it's only one line of code that must be changed, the second line is most of the time unchanged:

DO FOXYPREVIEWER.APP 
REPORT FORM YourReport PREVIEW

You find the complete documentation here: http://www.foxypreviewer.com/p/foxypreviewer-documentation.html

>What are these two lines of code?
>
>>No, you only need to add two line of code, nothing more!
>>
>>>I don't know, that is 1st. Secondly, I have a very large vertical application that would require many changes, in order to convert to the FoxyPreviewer. I hear only good things about FoxyPreviewer but I don't see, for far, the need to change.
>>>
>>>>Why don't you use FoxyPreviewer?
>>>>
>>>>>The CreateObject approach you describe maybe possible (although after you received C5, I would be concerned), but I don't want to change my code of DEFINE WINDOW since it has been working for a long time.
>>>>>Thank you.
>>>>>
>>>>>>After read others responses I thought that maybe you could use a actual Form object (via Define Class RepWindow as Form ) instead of a Define Window RepWindow. They should be the same to VFP. Does anyone else have anything to add to this approach?
>>>>>>
>>>>>>WAIT … I just tried this and am getting a C5 error on the REPORT FORM line
>>>>>>
>>>>>>

>>>>>>RepWindow=CREATEOBJECT("RepWindow")
>>>>>>RepWindow.show(2)
>>>>>>
>>>>>>REPORT FORM RepWindow TO PRINTER PROMPT PREVIEW WINDOW RepWindow
>>>>>>
>>>>>>RETURN
>>>>>>
>>>>>>DEFINE CLASS RepWindow as Form
>>>>>>	caption = 'RepWindow'
>>>>>>	windowstate = 2
>>>>>>*	visible = .t.
>>>>>>ENDDEFINE
>>>>>>

>>>>>>
>>>>>>>Hi,
>>>>>>>
>>>>>>>I have the following code in my application that creates a window in which a report is previewed. Here is the code:
>>>>>>>

>>>>>>>DEFINE WINDOW RepWindow ;
>>>>>>>   FROM 1, 1 TO 20, 20 ;
>>>>>>>   TITLE cReportTitle SYSTEM 
>>>>>>>
>>>>>>>ZOOM Window RepWindow  Max
>>>>>>>
>>>>>>>WAIT CLEAR 
>>>>>>>
>>>>>>>REPORT FORM (cReportFrxName) TO PRINTER PROMPT  PREVIEW WINDOW RepWindow
>>>>>>>
>>>>>>>RELEASE WINDOW RepWindow	
>>>>>>>

>>>>>>>
>>>>>>>While user is previewing the report (at the line REPORT FORM above), a code in another place of the application scans all open windows, as such:
>>>>>>>

>>>>>>>lnForms = _screen.formcount
>>>>>>>	 
>>>>>>>FOR i = lnForms to 1 STEP -1
>>>>>>>
>>>>>>>     *-- try to release this form:
>>>>>>>     _screen.Forms(i).Release
>>>>>>>
>>>>>>>ENDFOR
>>>>>>>

>>>>>>>
>>>>>>>But the _screen.formcount does not seem to include the form created with the DEFINE WINDOW (above).
>>>>>>>
>>>>>>>How can I either include the form created with DEFINE WINDOW in the _screen.formcount? Or how can I check if this form created with DEFINE WINDOW exists?
>>>>>>>
>>>>>>>TIA