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Tip of the Day
Language: Visual Basic
Expertise: Intermediate
Sep 13, 2000

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Sorting MSFlexGrid

Ever wonder how to get the MSFlexGrid to have sorting behavior common in many Windows applications? That is to say when you double-click on a columns header it sorts ascending. Double-click again and it sorts descending. The following code demonstrates the basic modifications necessary to make this work. Note: In this sample flexSortGenericAscending and flexSortGenericDescending are used. Of course you can modify this to sort more specifically based on the column.

 
=====================================================================
Prerequisites:  Add a grdInformation to your form and populate it.
=====================================================================
Private mintMyRow As Integer            'Holds Last Row
Private mintMyCol As Integer            'Holds Last Col
Private mintLastSort(8) As Integer      'Array with column's last
sort value
----------------------------------------------------------------------------
Private Sub grdInformation_DblClick()
  
  If mintMyRow = 0 Then             'On header row?
    If mintLastSort(mintMyCol) = 1 Then 'Already sorted ascending?
      grdInformation.Sort = 2
      mintLastSort(mintMyCol) = 2       'Generic Descending
    Else
      grdInformation.Sort = 1
      mintLastSort(mintMyCol) = 1       'Generic Ascending
    End If
  End If
    
End Sub
----------------------------------------------------------------------------

Private Sub grdInformation_MouseDown(Button As Integer, Shift As Integer, x
As Single, y As Single)
  
  mintMyRow = grdInformation.MouseRow  
  mintMyCol = grdInformation.MouseCol  
End Sub
Steve Guthrie
 
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