About CloneCursor

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1 total messages Started by Mountain Lan Tue, 31 Jul 2001 14:36

#560

Author: Mountain Lan
Date: Tue, 31 Jul 2001 14:36

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Hello, everyone!
I am puzzled by a problem about ��CloneCursor�� method of 
TClientDataSet. I called this method to share the data between 
ClientDataSets, then deleted a record in the source data set, it 
seemed like that all records in the source data set were 
cleared. I inspected the properties of the source data set, and 
found that Eof and Bof were both true, while RecordCount was 
greater than zero. I used a grid to display the source data set. 
If I did nothing after deleting a record, there was no row in 
the grid; if I called First or Last, the records remained can be 
shown in the grid. My program was very simple:
TClientDataSet *ClonedDataSet = new TClientDataSet(NULL);
ClonedDataSet->CloneCursor(SourceDataSet, true, false);
delete ClonedDataSet;

Any comment from you is appreciated!

Mountain Lan

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