Handled Field, DragDetectedEventArgs Class
Defines whether the event handler handled the event. This value can be modified by the DragDetected event handler.
Class: DragDetectedEventArgs
Namespace: Softelvdm.SftTreeNET
Assembly: Softelvdm.SftTreeNET
Syntax
public bool Handled;
Public Handled As Boolean
Comments
Defines whether the event handler handled the event. This value can be modified by the DragDetected event handler.
Default processing normally performed by the tree control should no longer take place (True), otherwise False and the tree control performs its default actions for the current event.
Instead of setting Handled to True, an application can call the SoftelvdmUserControl.CancelMode method while handling an event, which has the effect of setting Handled to True.
Examples
C#
if (e.Cell.Text == "") s += "(empty cell) ";
else s += e.Cell.Text + " ";
} else if (e.RowHeader != null) {
if (e.RowHeader.Text == "") s += "(empty row header) ";
else s += e.RowHeader.Text + " ";
} else if (e.Item != null) {
s += " an item ";
}
e.Handled = true;
sftTree1.DoDragDrop(s, DragDropEffects.Copy);
}
// The textbox just copies data in this example
private void textBox1_DragEnter(object sender, DragEventArgs e) {
Debug.Write("*** textBox1 DragEnter ");
DumpValues(e); View Entire Sample Code
VB.NET
If e.RowHeader.Text = "" Then
s = s & "(empty row header) "
Else
s = s & e.RowHeader.Text & " "
End If
ElseIf Not e.Item Is Nothing Then
s = s & " an item "
End If
e.Handled = True
sftTree1.DoDragDrop(s, DragDropEffects.Copy)
End Sub
Private Sub textBox1_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles textBox1.DragEnter
Debug.Write("*** textBox1 DragEnter ")
DumpValues(e)
If e.Data.GetDataPresent(DataFormats.UnicodeText) Then View Entire Sample Code
See Also DragDetectedEventArgs Class | Classes | SftTree/NET 2.0
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