_calcvalue and _calcmem have nothing to do with the WIndows calculator, but rather the VFP calculator. ACTIVATE WINDOW CALCULATOR. It's not modal and you can't make it modal. If you want a modal calculator, you'll have to create your own.

>I am confused about the Windows calculator. I would like to employ it to return a result back to a text box that had focus before the calculator was invoked. I believe I want to use the dblclick method to invoke the calculator. Where I am confused is that the window that pops up is not modal. I want the window to close and be able to populate the value property of the text box that had focus. So what event takes place when I close the window?
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>To me, the VFP explanation was too vague for _calvalue and _calcmem.
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>Thank you in advance.