VMSSheetManager

We saw in Chapter 12 how the VMSSheetManager is used to control the creation of application Sheet controls. Now, the {open-sheet} method will be extended to handle the new Stock by make request. Figure 18-4 shows the new code required.

To open the Stock by Manufacturer bar chart report, we must create an instance of the StockByMakeSheet class, passing across the type of report in which to present the data. We then make the sheet visible to the user by calling the {add-sheet} method.

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