本文整理汇总了VB.NET中System.Windows.Forms.Application.AddMessageFilter方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Application.AddMessageFilter方法的具体用法？VB.NET Application.AddMessageFilter怎么用？VB.NET Application.AddMessageFilter使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Windows.Forms.Application的用法示例。
在下文中一共展示了Application.AddMessageFilter方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: PreFilterMessage
' Creates a message filter.
<SecurityPermission(SecurityAction.LinkDemand, Flags := SecurityPermissionFlag.UnmanagedCode)> _
Public Class TestMessageFilter
Implements IMessageFilter
<SecurityPermission(SecurityAction.Demand)> _
Public Function PreFilterMessage(ByRef m As System.Windows.Forms.Message) _
As Boolean Implements IMessageFilter.PreFilterMessage
' Blocks all the messages relating to the left mouse button.
If ((m.Msg >= 513) And (m.Msg <= 515)) Then
Console.WriteLine("Processing the messages : " & m.Msg)
Return True
End If
Return False
End Function
End Class示例2: MessageFilter
' 导入命名空间
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math
public class MessageFilter
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Public Class NoLeftDownMessageFilter
Implements IMessageFilter
Public Function PreFilterMessage(ByRef m As System.Windows.Forms.Message) As Boolean Implements IMessageFilter.PreFilterMessage
Const WM_LBUTTONDOWN As Long = &H201
Return (m.Msg = WM_LBUTTONDOWN)
End Function
End Class
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim no_left_down_message_filter As New NoLeftDownMessageFilter
Application.AddMessageFilter(no_left_down_message_filter)
End Sub
Private Sub Form1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click
Application.UseWaitCursor = Not Application.UseWaitCursor
End Sub
End Class
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Public Class Form1
Inherits System.Windows.Forms.Form
'Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
End If
MyBase.Dispose(disposing)
End Sub
Private components As System.ComponentModel.IContainer
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.SuspendLayout()
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Text = "UseMessageFilter"
Me.ResumeLayout(False)
End Sub
End Class