1 // http://www.codeproject.com/Articles/37253/Double-buffered-Tree-and-Listviews
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3 // The MIT License (MIT)
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5 // Copyright (c) 2009 Eugene Sichkar
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7 // Permission is hereby granted, free of charge, to any person obtaining a copy
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8 // of this software and associated documentation files (the "Software"), to deal
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9 // in the Software without restriction, including without limitation the rights
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10 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 // copies of the Software, and to permit persons to whom the Software is
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12 // furnished to do so, subject to the following conditions:
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14 // The above copyright notice and this permission notice shall be included in
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15 // all copies or substantial portions of the Software.
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17 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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20 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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26 using System.Runtime.InteropServices;
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27 using System.Windows.Forms;
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29 namespace KancolleSniffer
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31 public class DbTreeView : TreeView
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33 // ReSharper disable InconsistentNaming
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34 private const int TV_FIRST = 0x1100;
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35 private const int TVM_SETEXTENDEDSTYLE = TV_FIRST + 44;
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36 private const int TVS_EX_DOUBLEBUFFER = 0x0004;
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37 // ReSharper restore InconsistentNaming
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41 // Enable default double buffering processing (DoubleBuffered returns true)
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42 SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
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45 private void UpdateExtendedStyles()
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49 style |= TVS_EX_DOUBLEBUFFER;
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51 SendMessage(Handle, TVM_SETEXTENDEDSTYLE, (IntPtr)TVS_EX_DOUBLEBUFFER, (IntPtr)style);
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54 [DllImport("user32.dll")]
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55 public static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);
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57 protected override void OnHandleCreated(EventArgs e)
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59 base.OnHandleCreated(e);
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60 UpdateExtendedStyles();
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