в 15:31, 26 мая 2010

2010-05-26T15:31:19Z

Admin: 1 версия

2010-05-26T11:43:02Z

1 версия

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==Installing a Message Filter==

<source lang="csharp">
using System;
using System.Windows.Forms;

public class BlockLeftMouseButtonMessageFilter : IMessageFilter
{
const int WM_LBUTTONDOWN = 0x201;
const int WM_LBUTTONUP = 0x202;

public bool PreFilterMessage(ref Message m)
{
if(m.Msg == WM_LBUTTONDOWN)
{
Console.WriteLine("The left mouse button is down.");
return true;
}
if(m.Msg == WM_LBUTTONUP)
{
Console.WriteLine("The left mouse button is up.");
return true;
}
return false;
}
}

public class MainForm : Form
{
public static void Main()
{
MainForm MyForm = new MainForm();
BlockLeftMouseButtonMessageFilter MsgFilter = new BlockLeftMouseButtonMessageFilter();

Application.AddMessageFilter(MsgFilter);
Application.Run(MyForm);
}

public MainForm()
{
Text = "Message Filter Test";
}
}

</source>

==Removing an Installed Message Filter==

<source lang="csharp">
using System;
using System.Windows.Forms;

public class BlockLeftMouseButtonMessageFilter : IMessageFilter
{
const int WM_LBUTTONDOWN = 0x201;

public bool PreFilterMessage(ref Message m) {
if(m.Msg == WM_LBUTTONDOWN)
{
Console.WriteLine("The left mouse button is down.");
Application.RemoveMessageFilter(this);
return true;
}
return false;
}
}

public class MainForm : Form
{
public static void Main()
{
MainForm MyForm = new MainForm();
BlockLeftMouseButtonMessageFilter MsgFilter = new BlockLeftMouseButtonMessageFilter();

Application.AddMessageFilter(MsgFilter);
Application.Run(MyForm);
}

public MainForm()
{
Text = "Message Filter Removal Test";
}
}

</source>

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в 15:31, 26 мая 2010

Admin: 1 версия