VB.Net Tutorial/GUI/Irregular Window — различия между версиями
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Текущая версия на 15:56, 26 мая 2010
Drag and drop irregular window
<source lang="vbnet">Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class TransparentFormDemo
public Shared Sub Main Application.Run(New TransparentForm) End Sub
End class Public Class TransparentForm
Inherits System.Windows.Forms.Form
- 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 Me.SetStyle(ControlStyles.ResizeRedraw, True) 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. <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() " "TransparentForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(208, 68) Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None Me.Name = "TransparentForm" Me.Text = "Transparency Test" End Sub
- End Region
Private Sub TransparentForm_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = e.Graphics Dim pen As Pen = New Pen(Color.Red, 4) Dim rect As Rectangle = Me.ClientRectangle rect.Inflate(-2, -2) g.FillEllipse(Brushes.Yellow, rect) g.DrawEllipse(pen, rect) pen.Dispose() End Sub Sub SetEllipseRegion() Dim rect As Rectangle = Me.ClientRectangle Dim path As GraphicsPath = New GraphicsPath() path.AddEllipse(RectangleF.op_Implicit(rect)) Me.Region = New Region(path) path.Dispose() End Sub Private Sub TransparentForm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load SetEllipseRegion() End Sub Private Sub TransparentForm_SizeChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.SizeChanged SetEllipseRegion() End Sub Dim downpoint As Point = Point.Empty Private Sub TransparentForm_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown If e.Button <> MouseButtons.Left Then Exit Sub downpoint = New Point(e.X, e.Y) End Sub Private Sub TransparentForm_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseMove If downpoint = Point.Empty Then Exit Sub Dim location As Point = New Point(me.Left + e.X - downpoint.X, me.Top + e.Y - downpoint.Y) Me.Location = location End Sub Private Sub TransparentForm_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseUp If e.Button <> MouseButtons.Left Then Exit Sub downpoint = Point.Empty End Sub
End Class</source>
Form Hole
<source lang="vbnet">Imports System.Windows.Forms Imports System.Drawing Imports System.Drawing.Drawing2D public class FormHole
public Shared Sub Main Application.Run(New Form1) End Sub
End class Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load TransparencyKey = BackColor Label1.BackColor = TransparencyKey End Sub Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint Dim thick_pen As New Pen(Color.Black, 10) Dim rect As New Rectangle( _ e.ClipRectangle.X + 10, _ e.ClipRectangle.Y + 10, _ e.ClipRectangle.Width - 20, _ e.ClipRectangle.Height - 20) e.Graphics.DrawEllipse(thick_pen, rect) thick_pen.Dispose() 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 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.Label1 = New System.Windows.Forms.Label Me.SuspendLayout() " "Label1 " Me.Label1.AutoSize = True Me.Label1.BackColor = System.Drawing.SystemColors.Control Me.Label1.Font = New System.Drawing.Font("Forte", 48.0!, System.Drawing.FontStyle.Italic, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.Label1.Location = New System.Drawing.Point(48, 56) Me.Label1.Name = "Label1" Me.Label1.Size = New System.Drawing.Size(169, 70) Me.Label1.TabIndex = 0 Me.Label1.Text = "Hole" Me.Label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter " "Form1 " Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.BackColor = System.Drawing.Color.Red Me.ClientSize = New System.Drawing.Size(274, 187) Me.Controls.Add(Me.Label1) Me.Name = "Form1" Me.Text = "Form1" Me.ResumeLayout(False) Me.PerformLayout() End Sub Friend WithEvents Label1 As System.Windows.Forms.Label
End Class</source>
Resize irregular window
<source lang="vbnet">" Quote from "Windows Forms Programming in VB "by Chris Sells (Author), Justin Gehtland (Author) "Publisher: Addison-Wesley Professional; 1st edition (October 24, 2003) "Language: English "ISBN-10: 0321125193 "ISBN-13: 978-0321125194 Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Windows.Forms public class TransparentFormDemo
public Shared Sub Main Application.Run(New TransparentForm) End Sub
End class Public Class TransparentForm
Inherits System.Windows.Forms.Form
- 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 Me.SetStyle(ControlStyles.ResizeRedraw, True) 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. <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() " "TransparentForm " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(208, 68) Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None Me.Name = "TransparentForm" Me.Text = "Transparency Test" End Sub
- End Region
Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) MyBase.WndProc(m) Dim WM_NCHITTEST As Integer = &H84 If m.Msg <> WM_NCHITTEST Then Exit Sub Dim HTCLIENT As Integer = 1 Dim HTCAPTION As Integer = 2 If m.Result.ToInt32() = HTCLIENT Then m.Result = New IntPtr(HTCAPTION) Dim HTLEFT As Integer = 10 Dim HTRIGHT As Integer = 11 Dim HTTOP As Integer = 12 Dim HTTOPLEFT As Integer = 13 Dim HTTOPRIGHT As Integer = 14 Dim HTBOTTOM As Integer = 15 Dim HTBOTTOMLEFT As Integer = 16 Dim HTBOTTOMRIGHT As Integer = 17 Dim clientLocation As Point = Me.PointToClient(New Point(m.LParam.ToInt32)) Dim x As Integer = clientLocation.X Dim y As Integer = clientLocation.Y If x = 0 And y = 0 Then m.Result = New IntPtr(HTCAPTION) Exit Sub ElseIf x = 0 And y >= 0 Then m.Result = New IntPtr(HTRIGHT) Exit Sub ElseIf x = 0 Then m.Result = New IntPtr(HTLEFT) Exit Sub ElseIf y = 0 And x >= 0 Then m.Result = New IntPtr(HTTOP) Exit Sub ElseIf y = 0 Then m.Result = New IntPtr(HTBOTTOM) Exit Sub End If Dim slopeAbs As Double = Math.Abs(CDbl(y) / CDbl(x)) If x > 0 And y > 0 Then " Q1 If slopeAbs > 2 Then m.Result = New IntPtr(HTTOP) ElseIf slopeAbs < 0.5 Then m.Result = New IntPtr(HTRIGHT) Else m.Result = New IntPtr(HTTOPRIGHT) End If ElseIf x > 0 And y < 0 Then " Q2 If slopeAbs > 2 Then m.Result = New IntPtr(HTBOTTOM) ElseIf slopeAbs < 0.5 Then m.Result = New IntPtr(HTRIGHT) Else m.Result = New IntPtr(HTBOTTOMRIGHT) End If ElseIf x < 0 And y < 0 Then " Q3 If slopeAbs > 2 Then m.Result = New IntPtr(HTBOTTOM) ElseIf slopeAbs < 0.5 Then m.Result = New IntPtr(HTLEFT) Else m.Result = New IntPtr(HTBOTTOMLEFT) End If Else " Q4 If slopeAbs > 2 Then m.Result = New IntPtr(HTTOP) ElseIf slopeAbs < 0.5 Then m.Result = New IntPtr(HTLEFT) Else m.Result = New IntPtr(HTTOPLEFT) End If End If End Sub
End Class</source>