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Objective Grid: Inserting unbound columns

Article ID: 335
Last updated: 07 Jun, 2018
Article ID: 335
Last updated: 07 Jun, 2018
Revision: 3
Views: 2058
Posted: 24 Jan, 2001
by Meltreger B.
Updated: 07 Jun, 2018
by Meltreger B.

Problem

How can I insert unbound columns where I want to display some additional info based on existing columns?

Cause

Action

You can insert columns with

InsertCols(3, 1);

and override OnLoadCellStyle(). In OnLoadCellStyle() you can determine the values of the neighboring columns with GetValueRowCol(nRow, nCol).

Example:

BOOL CDaoqueryView::OnLoadCellStyle(ROWCOL nRow, ROWCOL nCol, CGXStyle& style, LPCTSTR pszExistingValue)
{
// Is this the new column for the expression?
if (nCol == 3)
{
double val1 = GetValueRowCol(nRow, 1);
double val2 = GetValueRowCol(nRow, 2);

// Compute value
style.SetValue(val1+val2);

// Don't let the user change
// the value, make it static
style.SetControl(GX_IDS_CTRL_STATIC);

return TRUE;
}

// Let the CGXDAOGrid read all
// other columns from recordset

return CGXDaoRecordView::OnLoadCellStyle(nRow, nCol, style, pszExistingValue);
}

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Article ID: 335
Last updated: 07 Jun, 2018
Revision: 3
Views: 2058
Posted: 24 Jan, 2001 by Meltreger B.
Updated: 07 Jun, 2018 by Meltreger B.
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