Well I don't want to take a lot of anyone's time anymore. I thought it would be 
a simple matter to get the value of a cell in one dataGrid and put it into the 
cell of another, but this is proving to be a beatch. 

In your experiment 19, you use setDataOfLine to modify the value in the color 
column in the row dropped on to. Okay I get it, but since I am trying to put 
the value into the first empty cell in that column I am using setDataOfIndex 
because the cell may not be visible, should be no problem. 

But here's the problem: The destination data grid starts out empty, so all my 
calls to the index of anything is going to be zero. Even if I fudge the index 
to be one, if there is no objects for line 1, I cannot set the dataOfAnything. 

In retrospect, I think the way a datagrid should have been implemented is, 
there should ALWAYS be objects replicated for as many rows as are visible. This 
way, I could get and set values for any visible line without having to worry 
about this gotcha. I can see though that if someone scrolled the data grid, you 
would be faced with having to add more rows, and then would you delete them if 
the user scrolled up? 

Maybe the solution would be to have at least one empty row at the bottom of the 
datagrid so there would be objects to work with. Or else, the data grid api 
could be modified so that if I set the dataOfIndex or dataOfLine larger than 
dgNumberOfLines, it would insert as many blank lines as needed to get me there. 
Food for thought. 

I think what I will do, is instead of setting dgText to empty when I want to 
clear the datagrid, I will set the contents to a tab delimited list of empty 
lines for as many rows as are displayed. That will get around this issue for 
now. 

I hope people see my issue. It is like having a spreadsheet that constantly 
threw errors when I used an empty cell as a reference, simply because there was 
nothing in it. 

Bob
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