form1.vb

Visual.Basic.NET实用编程百例-47.6M.zip

Imports System
Imports System.Drawing
Imports System.Drawing.Imaging
Public Class Form1
    Inherits System.Windows.Forms.Form
    Private g As Graphics

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写处置以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意：以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Friend WithEvents Label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Form1))
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'PictureBox1
        '
        Me.PictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.PictureBox1.Image = CType(resources.GetObject("PictureBox1.Image"), System.Drawing.Image)
        Me.PictureBox1.Location = New System.Drawing.Point(24, 16)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(288, 224)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(32, 256)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(248, 16)
        Me.Label1.TabIndex = 3
        Me.Label1.Text = "鼠标点击点的RGB值："
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(336, 285)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.PictureBox1)
        Me.Name = "Form1"
        Me.Text = "获取图片颜色值"
        Me.ResumeLayout(False)

    End Sub

#End Region


    Private Sub PictureBox1_MouseDown(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.MouseEventArgs) _
    Handles PictureBox1.MouseDown
        g = Me.PictureBox1.CreateGraphics()
        Dim newbitmap As Bitmap
        newbitmap = Me.PictureBox1.Image

        Dim tempcolor As Color
        tempcolor = newbitmap.GetPixel(e.X, e.Y)
        Dim tempstr As String = ""
        tempstr = "(" + CType(CType(tempcolor.R, Integer), String) + ","
        tempstr += CType(CType(tempcolor.G, Integer), String) + ","
        tempstr += CType(CType(tempcolor.B, Integer), String) + ")"
        Me.Label1.Text = "鼠标点击点的RGB值：" + tempstr
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

End Class