GetRowViewportIndexFromY Method (FpSpread)

Gets the index of the viewport row for the specified coordinate for the active sheet.

Syntax

Visual Basic
C#

'Declaration
 
Public Function GetRowViewportIndexFromY( _
   ByVal y As Integer _
) As Integer

'Usage
 
Dim instance As FpSpread
Dim y As Integer
Dim value As Integer
 
value = instance.GetRowViewportIndexFromY(y)

public int GetRowViewportIndexFromY( 
   int y
)

Parameters

y: Y-coordinate

Return Value

Integer index of viewport row

Remarks

This method (along with GetColumnViewportIndexFromX) allows you to retrieve the index of the viewport row or viewport column from pixel offsets. This is useful in mouse-handling to see in which viewport a mouse event (MouseDown, MouseMove, etc.) occurred.

The viewport row index is zero-based, so the first (top) viewport row has an index of 0.

Example

This example returns the viewport the user clicks in.

private void fpSpread1MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
     int i;
     i = fpSpread1.GetRootWorkbook.GetRowViewportIndexFromY(e.Y);
     Debug.WriteLine(i.ToString);
}

Visual Basic

Private Sub FpSpread1MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles FpSpread1.MouseDown
     Dim i As Integer
     i = FpSpread1.GetRootWorkbook.GetRowViewportIndexFromY(e.X)
     Debug.WriteLine(i.ToString)
End Sub

Reference

FpSpread Class
FpSpread Members