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To clear all grid rows (not including outer rows), I would like to use RowRemoveAll on a CExtTreeGridWnd object. If the table is not empty when this method is called, an assertion is generated. Should I use a different method to accoplish this task? Below, I have included the call stack.

Thanks,

Gil

> ProfUIS282md.dll!CExtTreeGridDataProvider::RowRemove(unsigned long nRowNo=1, unsigned long nRemoveCount=3)  Line 2590 + 0x17 bytes C++

  ProfUIS282md.dll!CExtGridWnd::RowRemove(long nRowNo=0, long nRowRemoveCount=3, bool bRedraw=false)  Line 52565 + 0x1d bytes C++

  ProfUIS282md.dll!CExtGridBaseWnd::RowTruncate(long nRowNo=0, bool bRedraw=false)  Line 446 + 0x1c bytes C++

  ProfUIS282md.dll!CExtGridBaseWnd::RowRemoveAll(bool bRedraw=false)  Line 453 C++

  Ziggy.dll!VRTeachpointGrid::SetTeachpointList(const VRTeachpointList & tpList={...})  Line 140 + 0xd bytes C++

  Ziggy.dll!VRTabTeachpoints::UpdateTeachpointList()  Line 57 C++

  Ziggy.dll!VRMainSheet::UpdateTeachpointList()  Line 65 + 0x12 bytes C++

  Ziggy.dll!CDlgDiagnostics::ModifyTeachpoint(const std::basic_string<char,std::char_traits<char>,std::allocator<char> > & strOrgTpName="Tp2_L1L", const VRTeachpoint & tpModified={...})  Line 481 C++

  Ziggy.dll!VRTabJogMove::OnBnClickedEditTeachpointA()  Line 343 + 0x5f bytes C++

You should not use methods like RowRemoveAll(), RowRemove(), RowAdd() and RowInsert() with the CExtTreeGridWnd class. You should use the CExtTreeGridWnd::Item***() methods instead. You can remove all tree items by removing all child items of the root item.

      CExtTreeGridWnd & wndTreeGrid = . . .
      HTREEITEM htiRoot = wndTreeGrid.ItemGetRoot();
      wndTreeGrid.ItemRemove( htiRoot, true );