VB.Net/GUI/Drag Move

Материал из VB Эксперт
Перейти к: навигация, поиск

Drag to move a Component inside a Container

Imports System
Imports System.Drawing
Imports System.Windows.Forms

Public Class MainClass
    Shared Sub Main()
        Dim form1 As Form = New Form1

    End Sub
End Class
Public Class Form1
    Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
    Public Sub New()
        "This call is required by the Windows Form Designer.
        "Add any initialization after the InitializeComponent() call
    End Sub
    "Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
            End If
        End If
    End Sub
    Friend WithEvents lblDragger As System.Windows.Forms.Label
    "Required by the Windows Form Designer
    Private components As System.ruponentModel.Container
    "NOTE: The following procedure is required by the Windows Form Designer
    "It can be modified using the Windows Form Designer.  
    "Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.lblDragger = New System.Windows.Forms.Label()
        Me.lblDragger.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.lblDragger.Image = New Bitmap("figure2.bmp")
        Me.lblDragger.Location = New System.Drawing.Point(40, 40)
        Me.lblDragger.Name = "lblDragger"
        Me.lblDragger.Size = New System.Drawing.Size(72, 56)
        Me.lblDragger.TabIndex = 1
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(232, 162)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.lblDragger})
        Me.Name = "FakeDragAndDrop"
        Me.Text = "Fake Drag And Drop"
    End Sub
#End Region
    Private Sub cmdDragger_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
    End Sub
    Private IsDragging As Boolean = False
    Private ClickOffsetX, ClickOffsetY As Integer
    Private Sub lblDragger_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lblDragger.MouseDown
        IsDragging = True
        ClickOffsetX = e.X
        ClickOffsetY = e.Y
    End Sub
    Private Sub lblDragger_MouseUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lblDragger.MouseUp
        IsDragging = False
    End Sub
    Private Sub lblDragger_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles lblDragger.MouseMove
        If IsDragging = True Then
            lblDragger.Left = e.X + lblDragger.Left - ClickOffsetX
            lblDragger.Top = e.Y + lblDragger.Top - ClickOffsetY
        End If
    End Sub
End Class