corrade-vassal – Rev 1
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* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
namespace WinGridProxy
{
class ListViewNoFlicker : ListView
{
public ListViewNoFlicker()
{
//Activate double buffering
this.SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
//Enable the OnNotifyMessage event so we get a chance to filter out
// Windows messages before they get to the form's WndProc
this.SetStyle(ControlStyles.EnableNotifyMessage, true);
}
protected override void OnNotifyMessage(Message m)
{
//Filter out the WM_ERASEBKGND message
if (m.Msg != 0x14)
{
base.OnNotifyMessage(m);
}
}
}
public class ListViewItemComparer : IComparer<object>
{
// Initialize the variables to default
public int column = 0;
public bool bAscending = true;
// Using the Compare function of IComparer
public int Compare(object x, object y)
{
// Cast the objects to ListViewItems
ListViewItem lvi1 = (ListViewItem)x;
ListViewItem lvi2 = (ListViewItem)y;
// If the column is the string columns
if (column != 2)
{
string lvi1String = lvi1.SubItems[column].ToString();
string lvi2String = lvi2.SubItems[column].ToString();
// Return the normal Compare
if (bAscending)
return String.Compare(lvi1String, lvi2String);
// Return the negated Compare
return -String.Compare(lvi1String, lvi2String);
}
// The column is the Age column
int lvi1Int = ParseListItemString(lvi1.SubItems[column].ToString());
int lvi2Int = ParseListItemString(lvi2.SubItems[column].ToString());
// Return the normal compare.. if x < y then return -1
if (bAscending)
{
if (lvi1Int < lvi2Int)
return -1;
else if (lvi1Int == lvi2Int)
return 0;
return 1;
}
// Return the opposites for descending
if (lvi1Int > lvi2Int)
return -1;
else if (lvi1Int == lvi2Int)
return 0;
return 1;
}
private int ParseListItemString(string x)
{
//ListViewItems are returned like this: "ListViewSubItem: {19}"
int counter = 0;
for (int i = x.Length - 1; i >= 0; i--, counter++)
{
if (x[i] == '{')
break;
}
return Int32.Parse(x.Substring(x.Length - counter, counter - 1));
}
}
}