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/// <summary>
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/// TreeList 绘制NodeButton事件的处理程序
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/// imglCustom是一个imagelist 有两个图标,如果当前节点是展开的则显示第一个图标,否则显示第二个图标
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void treeList1_CustomDrawNodeButton(object sender, DevExpress.XtraTreeList.CustomDrawNodeButtonEventArgs e)
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{
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e.Graphics.DrawImageUnscaled(imglCustom.Images[e.Expanded ? 0 : 1], e.Bounds);
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e.Handled = true;
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}
/// <summary>2
/// TreeList 绘制NodeButton事件的处理程序3
/// imglCustom是一个imagelist 有两个图标,如果当前节点是展开的则显示第一个图标,否则显示第二个图标4
/// </summary>5
/// <param name="sender"></param>6
/// <param name="e"></param>7
private void treeList1_CustomDrawNodeButton(object sender, DevExpress.XtraTreeList.CustomDrawNodeButtonEventArgs e)8
{9
e.Graphics.DrawImageUnscaled(imglCustom.Images[e.Expanded ? 0 : 1], e.Bounds);10
e.Handled = true;11
}



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