VB.Net/GUI/Form Event

Материал из VB Эксперт
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Form Resize and Load Event Handler

<source lang="vbnet"> Imports System Imports System.ruponentModel Imports System.Windows.Forms Imports System.Data Imports System.Configuration Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Drawing.Text Imports System.Globalization Imports System.Text Imports System.Collections Public Class MainClass

   Shared Sub Main()
       
       Dim myform As Form = New PageUnitsForm()
       Application.Run(myform)
   End Sub

End Class

Public Class PageUnitsForm

   Inherits System.Windows.Forms.Form
  1. Region " Windows Form Designer generated code "
   Public Sub New()
       MyBase.New()
       "This call is required by the Windows Form Designer.
       InitializeComponent()
       "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
               components.Dispose()
           End If
       End If
       MyBase.Dispose(disposing)
   End Sub
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.IContainer
   "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.
   Friend WithEvents statusBar1 As System.Windows.Forms.StatusBar
   <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
       Me.statusBar1 = New System.Windows.Forms.StatusBar()
       Me.SuspendLayout()
       "
       "statusBar1
       "
       Me.statusBar1.Location = New System.Drawing.Point(0, 244)
       Me.statusBar1.Name = "statusBar1"
       Me.statusBar1.Size = New System.Drawing.Size(292, 22)
       Me.statusBar1.TabIndex = 1
       Me.statusBar1.Text = "statusBar1"
       "
       "PageUnitsForm
       "
       Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
       Me.ClientSize = New System.Drawing.Size(292, 266)
       Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.statusBar1})
       Me.Name = "PageUnitsForm"
       Me.Text = "PageUnitsForm"
       Me.ResumeLayout(False)
   End Sub
  1. End Region
   Sub ShowClientSize()
       Dim g As Graphics = Me.CreateGraphics()
       g.PageUnit = GraphicsUnit.Inch
       g.PageScale = 1
       Dim bottomRight As PointF() = New PointF() {New PointF(Me.ClientSize.Width, Me.ClientSize.Height)}
       g.TransformPoints(CoordinateSpace.Page, CoordinateSpace.Device, bottomRight)
       statusBar1.Text = String.Format("ClientSize= {0} pixels, {1} inches", Me.ClientSize, bottomRight(0))
   End Sub
   Private Sub PageUnitsForm_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Resize
       ShowClientSize()
   End Sub
   Private Sub PageUnitsForm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
       ShowClientSize()
   End Sub

End Class

      </source>


React to Frame ReSize Event

<source lang="vbnet"> Imports System Imports System.Windows.Forms Imports System.Drawing.Text Imports System.Drawing Imports System.Drawing.Drawing2D Public Class MainClass

   Shared Sub Main(ByVal args As String())
       Dim myform As Form = New Form1()
       Application.Run(myform)
   End Sub

End Class

Public Class Form1

   Private Sub Form1_Paint(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
       DrawGraphics(e.Graphics)
   End Sub
   Private Sub Form1_Resize(ByVal sender As Object, _
    ByVal e As System.EventArgs) Handles MyBase.Resize
       DrawGraphics(Me.CreateGraphics())
   End Sub
   Private Sub DrawGraphics(ByVal gr As Graphics)
       gr.Clear(Me.BackColor)
       gr.DrawLine(Pens.Black, 0, 0, _
           Me.ClientSize.Width - 1, _
           Me.ClientSize.Height - 1)
       gr.DrawLine(Pens.Black, _
           Me.ClientSize.Width - 1, 0, _
           0, Me.ClientSize.Height - 1)
   End Sub

End Class

<Global.Microsoft.VisualBasic.rupilerServices.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
   "Required by the Windows Form Designer
   Private components As System.ruponentModel.IContainer
   "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.SuspendLayout()
       "
       "Form1
       "
       Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
       Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
       Me.ClientSize = New System.Drawing.Size(564, 209)
       Me.Name = "Form1"
       Me.Text = "Title"
       Me.ResumeLayout(False)
   End Sub

End Class

      </source>