PropertyValueUIItem Class
.NET Framework 3.0
Provides information about a property displayed in the Properties window, including the associated event handler, pop-up information string, and the icon to display for the property.
Namespace: System.Drawing.Design
Assembly: System.Drawing (in system.drawing.dll)
Assembly: System.Drawing (in system.drawing.dll)
The following code example provides a PropertyValueUIItem object for any properties of the component named HorizontalMargin or VerticalMargin. The PropertyValueUIItem for these properties provides an image, a ToolTip, and an event handler that displays a message box when the image for the property is clicked. This code example is part of a larger example provided for the IPropertyValueUIService interface.
' PropertyValueUIHandler delegate that provides PropertyValueUIItem ' objects to any properties named HorizontalMargin or VerticalMargin. Private Sub marginPropertyValueUIHandler(ByVal context As System.ComponentModel.ITypeDescriptorContext, ByVal propDesc As System.ComponentModel.PropertyDescriptor, ByVal itemList As ArrayList) ' A PropertyValueUIHandler added to the IPropertyValueUIService ' is queried once for each property of a component and passed ' a PropertyDescriptor that represents the characteristics of ' the property when the Properties window is set to a new ' component. A PropertyValueUIHandler can determine whether ' to add a PropertyValueUIItem for the object to its ValueUIItem ' list depending on the values of the PropertyDescriptor. If propDesc.DisplayName.Equals("HorizontalMargin") Then Dim img As Image = DeserializeFromBase64Text(imageBlob1) itemList.Add(New PropertyValueUIItem(img, New PropertyValueUIItemInvokeHandler(AddressOf Me.marginInvoke), "Test ToolTip")) End If If propDesc.DisplayName.Equals("VerticalMargin") Then Dim img As Image = DeserializeFromBase64Text(imageBlob1) img.RotateFlip(RotateFlipType.Rotate90FlipNone) itemList.Add(New PropertyValueUIItem(img, New PropertyValueUIItemInvokeHandler(AddressOf Me.marginInvoke), "Test ToolTip")) End If End Sub
// PropertyValueUIHandler delegate that provides PropertyValueUIItem
// objects to any properties named HorizontalMargin or VerticalMargin.
private void MarginPropertyValueUIHandler(System.ComponentModel.
ITypeDescriptorContext context, System.ComponentModel.
PropertyDescriptor propDesc, ArrayList itemList)
{
// A PropertyValueUIHandler added to the IPropertyValueUIService
// is queried once for each property of a component and passed
// a PropertyDescriptor that represents the characteristics of
// the property when the Properties window is set to a new
// component. A PropertyValueUIHandler can determine whether
// to add a PropertyValueUIItem for the object to its ValueUIItem
// list depending on the values of the PropertyDescriptor.
if (propDesc.get_DisplayName().Equals("HorizontalMargin")) {
Image img = DeserializeFromBase64Text(imageBlob1);
itemList.Add(new PropertyValueUIItem(img,
new PropertyValueUIItemInvokeHandler(this.MarginInvoke),
"Test ToolTip"));
}
if (propDesc.get_DisplayName().Equals("VerticalMargin")) {
Image img = DeserializeFromBase64Text(imageBlob1);
img.RotateFlip(RotateFlipType.Rotate90FlipNone);
itemList.Add(new PropertyValueUIItem(img,
new PropertyValueUIItemInvokeHandler(this.MarginInvoke),
"Test ToolTip"));
}
} //MarginPropertyValueUIHandler
- NamedPermissionSet for full access to system resources. Demand values: LinkDemand, InheritanceDemand. Associated state: FullTrust
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.Community Additions
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