Release 10.1A: OpenEdge Development:
Progress Dynamics Advanced Development

Creating the other support functions

Now create the support functions to make this work. The widgetHandle function can be the same as in the viewer example, because it uses the same gcFields and gcHandles variables, even though those are derived from different object properties.

The widgetValue function, however, looks a little different because, as noted, you cannot reference the cell values of the browse cells from within the ROW-DISPLAY event. For this reason the code refers back to the SDO’s RowObject record buffer, captured from the QueryRowObject property, to get the field value from there, as shown:

FUNCTION widgetValue RETURNS CHARACTER ( pcColumn AS CHARACTER ) : /*------------------------------------------------------------------------- Purpose: Returns the value of the requested browse column from the RowObject buffer. Params: INPUT pcColumn AS CHARACTER Notes: -------------------------------------------------------------------------*/ DEFINE VARIABLE hField AS HANDLE NO-UNDO. hField = ghBuffer:BUFFER-FIELD(pcColumn). RETURN STRING(hField:BUFFER-VALUE). END FUNCTION.

The highlightWidget function, like any other functions that just use widgetHandle and widgetValue, can be the same code as for the viewer example.