uidefault attribute
The [uidefault] attribute indicates that the type information member is the default member for display in the user interface.
[method-attribute-list, uidefault]return-type method-name(method-parameter-list)
Parameters
-
method-attribute-list
-
Other attributes that apply to the method.
-
return-type
-
The type of the data that the method will return when it finishes execution.
-
method-name
-
The name of the method.
-
method-parameter-list
-
Zero or more parameters for the method.
Remarks
Applying the [uidefault] attribute to a member of an interface or a dispinterface tells Visual Basic, at design-time, to automatically display this event or property to the user. This means that when the user double-clicks an object, Visual Basic jumps to the event in the default source interface that has the [uidefault] attribute. When the user selects an object, Visual Basic's Properties browser displays the property in the default source interface that has this attribute. If no event or property has the [uidefault] attribute, Visual Basic displays the first event or property listed in the default interface.
Typeflag Representation
The presence of FUNCFLAG_FUIDEFAULT or VARFLAG_FUIDEFAULT
Examples
[
dual,
uuid(12345678-1234-1234-1234-123456789ABC),
restricted
]
interface IForm: IDispatch
{
[propget]HRESULT Backcolor([out, retval] long *Value);
[propput]HRESULT Backcolor([in] long Value);
[propget, uidefault]HRESULT Name([out, retval] BSTR *Value);
[propput, uidefault]HRESULT Name([in] BSTR Value);
}
[
odl,
dual,
uuid(87654321-1234-1234-1234-123456789ABC),
restricted
]
interface IFormEvents: IDispatch
{
[uidefault]HRESULT Click();
HRESULT Resize();
}
[
uuid(12345678-1234-1234-1234-987654321ABC)
]
coclass Form
{
[default] interface IForm;
[default, source] interface IFormEvents;
}
See also