private void dgvImages_QueryActualDestination(object sender, Controls.QueryActualDestinationEventArgs e)
{
e.Effect = DragDropEffects.Move;
if (e.Source.Name == "dgvBookmarks")
{
e.ActualDestination = -1;
}
}
DragHitTestInfo GetDragHitTestInfo(DragEventArgs de)
{
Point pt = PointToClient(new Point(de.X, de.Y));
int index = HitTest(pt.X, pt.Y).RowIndex;
if (index < 0)
{
if (RowCount == 0)
{
index = 0;
}
else if (pt.Y > GetRowDisplayRectangle(RowCount - 1, false).Bottom)
{
index = RowCount;
}
}
var obj = de.Data.GetData(typeof(DataGridViewMovedRows)) as DataGridViewMovedRows;
int actualdest = index;
if (obj.Source == this)
{
var rowIndex = obj.SourceRows.Aggregate(int.MaxValue, (work, next) => work > next.Index ? next.Index : work);
if (index > rowIndex + obj.SourceRows.Count)
{
actualdest = index - obj.SourceRows.Count;
}
else if (index >= rowIndex)
{
actualdest = -1;
}
}
QueryActualDestinationEventArgs ev = new QueryActualDestinationEventArgs(actualdest, DragDropEffects.Move, obj.Source);
OnQueryActualDestination(ev);
if (ev.ActualDestination < 0)
{
de.Effect = DragDropEffects.None;
}
else
{
de.Effect = ev.Effect;
}
return(new DragHitTestInfo(index, ev.ActualDestination));
}
/// <summary><see cref="QueryActualDestination"/> イベントを発生させます。</summary>
protected virtual void OnQueryActualDestination(QueryActualDestinationEventArgs e) { QueryActualDestination?.Invoke(this, e); }
DragHitTestInfo GetDragHitTestInfo(DragEventArgs de)
{
Point pt = PointToClient(new Point(de.X, de.Y));
int index = HitTest(pt.X, pt.Y).RowIndex;
if (index < 0)
{
if (RowCount == 0)
index = 0;
else if (pt.Y > GetRowDisplayRectangle(RowCount - 1, false).Bottom)
index = RowCount;
}
var obj = de.Data.GetData(typeof(DataGridViewMovedRows)) as DataGridViewMovedRows;
int actualdest = index;
if (obj.Source == this)
{
var rowIndex = obj.SourceRows.Aggregate(int.MaxValue, (work, next) => work > next.Index ? next.Index : work);
if (index > rowIndex + obj.SourceRows.Count)
actualdest = index - obj.SourceRows.Count;
else if (index >= rowIndex)
actualdest = -1;
}
QueryActualDestinationEventArgs ev = new QueryActualDestinationEventArgs(actualdest, DragDropEffects.Move, obj.Source);
OnQueryActualDestination(ev);
if (ev.ActualDestination < 0)
de.Effect = DragDropEffects.None;
else
de.Effect = ev.Effect;
return new DragHitTestInfo(index, ev.ActualDestination);
}
/// <summary><see cref="QueryActualDestination"/> イベントを発生させます。</summary>
protected virtual void OnQueryActualDestination(QueryActualDestinationEventArgs e)
{
QueryActualDestination?.Invoke(this, e);
}
private void dgvBookmarks_QueryActualDestination(object sender, Controls.QueryActualDestinationEventArgs e)
{
e.Effect = e.Source == dgvBookmarks ? DragDropEffects.Move : DragDropEffects.Link;
}