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VB.NET ControlDesigner类代码示例

本文整理汇总了VB.NET中System.Windows.Forms.Design.ControlDesigner的典型用法代码示例。如果您正苦于以下问题:VB.NET ControlDesigner类的具体用法?VB.NET ControlDesigner怎么用?VB.NET ControlDesigner使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


在下文中一共展示了ControlDesigner类的1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: New

' 导入命名空间
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Collections
Imports System.Drawing
Imports System.Windows.Forms
Imports System.Windows.Forms.Design

Namespace ControlDesignerExample
    _
    ' ExampleControlDesigner is an example control designer that 
    ' demonstrates basic functions of a ControlDesigner.
    <System.Security.Permissions.PermissionSetAttribute(System.Security.Permissions.SecurityAction.Demand, Name:="FullTrust")> _
    Public Class ExampleControlDesigner
        Inherits System.Windows.Forms.Design.ControlDesigner

        ' This boolean state reflects whether the mouse is over the control.
        Private mouseover As Boolean = False
        ' This color is a private field for the OutlineColor property.
        Private lineColor As Color = Color.White

        ' This color is used to outline the control when the mouse is 
        ' over the control.
        Public Property OutlineColor() As Color
            Get
                Return lineColor
            End Get
            Set(ByVal Value As Color)
                lineColor = Value
            End Set
        End Property

        Public Sub New()
        End Sub

        ' Sets a value and refreshes the control's display when the 
        ' mouse position enters the area of the control.
        Protected Overrides Sub OnMouseEnter()
            Me.mouseover = True
            Me.Control.Refresh()
        End Sub

        ' Sets a value and refreshes the control's display when the 
        ' mouse position enters the area of the control.		
        Protected Overrides Sub OnMouseLeave()
            Me.mouseover = False
            Me.Control.Refresh()
        End Sub

        ' Draws an outline around the control when the mouse is 
        ' over the control.	
        Protected Overrides Sub OnPaintAdornments(ByVal pe As System.Windows.Forms.PaintEventArgs)
            If Me.mouseover Then
                pe.Graphics.DrawRectangle(New Pen(New SolidBrush(Me.lineColor), 6), 0, 0, Me.Control.Size.Width, Me.Control.Size.Height)
            End If
        End Sub

        ' Adds a property to this designer's control at design time 
        ' that indicates the outline color to use.
        ' The DesignOnlyAttribute ensures that the OutlineColor
        ' property is not serialized by the designer.
        Protected Overrides Sub PreFilterProperties(ByVal properties As System.Collections.IDictionary)
            Dim pd As PropertyDescriptor = TypeDescriptor.CreateProperty( _
            GetType(ExampleControlDesigner), _
            "OutlineColor", _
            GetType(System.Drawing.Color), _
            New Attribute() {New DesignOnlyAttribute(True)})

            properties.Add("OutlineColor", pd)
        End Sub
    End Class

    ' This example control demonstrates the ExampleControlDesigner.
    <DesignerAttribute(GetType(ExampleControlDesigner))> _
     Public Class ExampleControl
        Inherits System.Windows.Forms.UserControl
        Private components As System.ComponentModel.Container = Nothing

        Public Sub New()
            components = New System.ComponentModel.Container()
        End Sub

        Protected Overloads Sub Dispose(ByVal disposing As Boolean)
            If disposing Then
                If (components IsNot Nothing) Then
                    components.Dispose()
                End If
            End If
            MyBase.Dispose(disposing)
        End Sub
    End Class

End Namespace
开发者ID:VB.NET开发者,项目名称:System.Windows.Forms.Design,代码行数:93,代码来源:ControlDesigner


注:本文中的System.Windows.Forms.Design.ControlDesigner类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。