>>I would like to replace the expression builder that appears when a user is adding a field to a report. Setting the _GetExpr to my replacement expression builder will work in that my builder shows up. However, regardless of what I return from my builder, it is not put into the Report Expression. Has anyone managed to do this sucessfully ?
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>Is your replacement VFP code? If so, you don't have to use _GetExpr and GetExpr(), you can just call the code. If not, what is it? Can it be defined using DECLARE Function IN Library, then called? Just looking for another way to get to your "replacement" other than calling GetExpr().
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>HTH,

I need to use the _GetExpr, because in the report writer, in the window that appears when you are adding a field (built in foxpro window) there is a [...] button that when pressed calls up either the built in expression builder or if you have set the _GetExpr to your own app, then it calls up yours. The problem is that when you set an expression in the built in expression builder and close it, the previous window has an expression text box that is updated, but this does not happen (or at least I cannot figure out how to make it happen) when you use your own expression builder.