private void treeList1_CalcNodeDragImageIndex(object sender, DevExpress.XtraTreeList.CalcNodeDragImageIndexEventArgs e)
{
if (e.Node[treeListColumn3].ToString() == "Folder")
{
e.ImageIndex = 0;
}
if (e.Node[treeListColumn3].ToString() == "File")
{
if (e.Node.ParentNode == Tree.FocusedNode.ParentNode)
{
e.ImageIndex = -1;
return;
}
if (e.ImageIndex == 0)
{
if (e.Node.Id > Tree.FocusedNode.Id)
{
e.ImageIndex = 2;
}
else
{
e.ImageIndex = 1;
}
}
}
}
private void trvLstMain_CalcNodeDragImageIndex(object sender, DevExpress.XtraTreeList.CalcNodeDragImageIndexEventArgs e)
{
_NodeImageIndex = e.ImageIndex;
if (e.ImageIndex == 0) //表示DragNode become a child of the underlying node
{
e.ImageIndex = -1;
}
}
private void treeList1_CalcNodeDragImageIndex(object sender, DevExpress.XtraTreeList.CalcNodeDragImageIndexEventArgs e)
{
TreeList tl = sender as TreeList;
if (GetDragDropEffect(tl, tl.FocusedNode) == DragDropEffects.None)
{
e.ImageIndex = -1; // no icon
}
else
{
e.ImageIndex = 1; // the reorder icon (a curved arrow)
}
}
//设置拖拽节点时显示的图标
private void treeList_CalcNodeDragImageIndex(object sender, DevExpress.XtraTreeList.CalcNodeDragImageIndexEventArgs e)
{
TreeList tl = sender as TreeList;
bool updown = false;
if (GetDragDropEffect(tl, tl.FocusedNode, ref updown) != DragDropEffects.Copy)
{
if (GetDragDropEffect(tl, tl.FocusedNode, ref updown) == DragDropEffects.None)
{
e.ImageIndex = -1; //无图标
}
else
{
if (updown)
{
e.ImageIndex = 2; //向下的箭头
}
else
{
e.ImageIndex = 1; // 向上的箭头
}
}
}
}
