PropertyValueUIItem Class

 

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)

System::Object
  System.Drawing.Design::PropertyValueUIItem

[PermissionSetAttribute(SecurityAction::InheritanceDemand, Name = "FullTrust")]
[PermissionSetAttribute(SecurityAction::LinkDemand, Name = "FullTrust")]
public ref class PropertyValueUIItem 

NameDescription
System_CAPS_pubmethodPropertyValueUIItem(Image^, PropertyValueUIItemInvokeHandler^, String^)

Initializes a new instance of the PropertyValueUIItem class.

NameDescription
System_CAPS_pubpropertyImage

Gets the 8 x 8 pixel image that will be drawn in the Properties window.

System_CAPS_pubpropertyInvokeHandler

Gets the handler that is raised when a user double-clicks this item.

System_CAPS_pubpropertyToolTip

Gets or sets the information string to display for this item.

NameDescription
System_CAPS_pubmethodEquals(Object^)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodReset()

Resets the user interface (UI) item.

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

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.
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->DisplayName->Equals( "horizontalMargin" ) )
   {
      Image^ img = DeserializeFromBase64Text( imageBlob1 );
      itemList->Add( gcnew PropertyValueUIItem( img,gcnew PropertyValueUIItemInvokeHandler( this, &PropertyUIComponent::marginInvoke ),"Test ToolTip" ) );
   }

   if ( propDesc->DisplayName->Equals( "verticalMargin" ) )
   {
      Image^ img = DeserializeFromBase64Text( imageBlob1 );
      img->RotateFlip( RotateFlipType::Rotate90FlipNone );
      itemList->Add( gcnew PropertyValueUIItem( img,gcnew PropertyValueUIItemInvokeHandler( this, &PropertyUIComponent::marginInvoke ),"Test ToolTip" ) );
   }
}

NamedPermissionSet

for full access to system resources. Demand values: LinkDemand, InheritanceDemand. Associated state:

.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top
Show: