| VSFlexGrid Control > VSFlexGrid Properties, Events, and Methods > VSFlexGrid Events > BeforeMouseDown Event |
Fired before the control processes the MouseDown event.
Private Sub VSFlexGrid_BeforeMouseDown( ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Single, ByVal Y As Single, Cancel As Boolean)
The parameters for this event are identical to the ones in the MouseDown event, plus an additional Cancel parameter that allows you to prevent the default processing.
This event is useful if you want to process some mouse actions yourself, instead of relying on the control's default processing.
For example, the following routine detects shift-clicks and uses them to build and save a list of selected rows. Then it initiates a drag operation using Visual Basic's Drag method. The default mouse processing is canceled so the control does not modify the selection as the user drags the mouse.
Private Sub fa_BeforeMouseDown(ByVal Button As Integer, ByVal Shift As Integer, _
ByVal X As Single, ByVal Y As Single, Cancel As Boolean)
' use shift to drag (ctrl selects)
If Shift <> 1 Then Exit Sub
' cancel remaining mouse events
Cancel = True
' build a list of what we'll be dragging
Dim i As Long
fa.Tag = ""
For i = 0 To fa.SelectedRows - 1
fa.Tag = fa.Tag & vbCrLf & vbTab & fa.Cell(flexcpText, fa.SelectedRow(i), 0)
Next
fa.Drag ' start dragging
End Sub