File size: 2,491 Bytes
b1b3bae |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 |
Imports System.ComponentModel
Imports System.Drawing.Design
Imports System.Windows.Forms
Namespace PropertyGridEx
Public Class UICustomEventEditor
Inherits System.Drawing.Design.UITypeEditor
Public Delegate Function OnClick(ByVal sender As Object, ByVal e As EventArgs) As Object
Protected m_MethodDelegate As UICustomEventEditor.OnClick
Protected m_sender As CustomProperty.CustomPropertyDescriptor
Public Overloads Overrides Function GetEditStyle(ByVal context As _
ITypeDescriptorContext) As UITypeEditorEditStyle
If Not context Is Nothing AndAlso Not context.Instance Is Nothing Then
If Not context.PropertyDescriptor.IsReadOnly Then
Return UITypeEditorEditStyle.Modal
End If
End If
Return UITypeEditorEditStyle.None
End Function
<RefreshProperties(RefreshProperties.All)> _
Public Overloads Overrides Function EditValue( _
ByVal context As ITypeDescriptorContext, _
ByVal provider As System.IServiceProvider, _
ByVal value As [Object]) As [Object]
If context Is Nothing OrElse provider Is Nothing _
OrElse context.Instance Is Nothing Then
Return MyBase.EditValue(provider, value)
End If
If m_MethodDelegate Is Nothing Then
Dim attr As DelegateAttribute = context.PropertyDescriptor.Attributes(GetType(DelegateAttribute))
m_MethodDelegate = attr.GetMethod
End If
If m_sender Is Nothing Then
m_sender = TryCast(context.PropertyDescriptor, CustomProperty.CustomPropertyDescriptor)
End If
Return m_MethodDelegate.Invoke(m_sender, Nothing)
End Function
<AttributeUsage(AttributeTargets.Property)> _
Public Class DelegateAttribute
Inherits Attribute
Protected m_MethodDelegate As UICustomEventEditor.OnClick
Public ReadOnly Property GetMethod() As UICustomEventEditor.OnClick
Get
Return Me.m_MethodDelegate
End Get
End Property
Public Sub New(ByVal MethodDelegate As UICustomEventEditor.OnClick)
MyBase.New()
Me.m_MethodDelegate = MethodDelegate
End Sub
End Class
End Class
End Namespace
|