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Questions And Answers for PowerBuilder Interviews

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Question: #22 of #131

Section: DataWindow

Version: 5.0 or later

Question

When two DataWindow are being shared, what exactly would be shared and are there any restrictions?

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The presentation is not shared. The data (buffers including Delete! and Filter!) and the sort criteria is shared. There are few restrictions, which include, Crosstab DataWindow windows can't share data, the client and the server in the distributed computing mechanism can't share data. you can turn on the query mode only for the primary DataWindow. If a DataWindow is sharing data with a nested DataWindow, the handle to the nested DataWindow becomes invalid with each retrieval. So, GetChild() and ShareData() need to be called each time a nested DataWindow is retrieved.

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