When working with a View Pro offscreen area, the first step is create the object attributes of the offscreen area. There are 4 main attributes:

area - Name of offscreen area

autoQuit - Whether offscreen area should auto-quit

timeout - How many seconds it will take for offscreen area to auto-quit

onEvent - Callback method that executes when offscreen area is ready

The object containing these attributes is then passed as an argument to the method VP Run offscreen area as shown below:

C_OBJECT($param_o) C_VARIANT($offscreenResult_v) $param_o:=New object $param_o.area:="TestArea" // Name of VP object $param_o.autoQuit:=False // Boolean for autoclosing the offscreen area $param_o.timeout:=30 // Number of seconds before offscreen area autocloses $param_o.onEvent:=Formula(onEvent) // Callback method $offscreenResult_v:=VP Run offscreen area($param_o) // Result from callback method

For the onEvent callback method, it will simply create a new VP document, add some text to cell 0 0, then return the offscreen area as an object as shown below:

// Method: onEvent Case of    : (Form event code =On VP Ready)    C_OBJECT($range_o)       // Create new document    VP NEW DOCUMENT(This.area)       // Modifying new document by editting cell 0 0    $range_o:=VP Cell(This.area; 0; 0)    VP SET TEXT VALUE($range_o; "This is cell 0 0")       // Export object to result    This.result:=VP Export to object(This.area)    ACCEPT    End case

The VP object is now returned in the local variable $offscreenResult_v which can now be used to display on a form's View Pro area if needed using VP IMPORT FROM OBJECT.

// Import offscreen result object to form's "ViewProArea" VP IMPORT FROM OBJECT("ViewProArea"; $offscreenResult_v)