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Dear Support,

We have a tree grid with 10 columns.  the left-most column displays the tree. We want to merge the next 9 columns.

We create the 10 cells using ItemSetCell, and then we join the cells by calling this line:

HTREEITEM htParent = GetTreeItemFromID(nParentID);
HTREEITEM htItem = ItemInsert(htParent);
CExtGridCellString* pCell = (CExtGridCellString*)ItemGetCell(htItem, 0, RUNTIME_CLASS(CExtGridCellString)); 
CExtGridCellString* pCell1 = (CExtGridCellString*)ItemGetCell(htItem, 1, RUNTIME_CLASS(CExtGridCellString));
for (int i=2; i<10; i++)
{
	ItemGetCell(htItem, i, RUNTIME_CLASS(CExtGridCellString));
}

ItemCellJoinSet(CSize(9,1), htItem, 1);

The problem is that it merges only 8 cells.... the left one is not merged (column 1)

Please send us a fix to this bug

Thanks,

Ron.

If the result count of joined columns should be 10, CSize::cx should be 10.

I want to see two column, so I merge 9 columns starting from column 1:

ItemCellJoinSet(CSize(9,1), htItem, 1);

So it should not be 10, but 9 - and the bug is still there.