Difference between revisions of "AttributeInfo"
From Xojo Documentation
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The following code retrieves the attributes and displays them in a [[ListBox]]: | The following code retrieves the attributes and displays them in a [[ListBox]]: | ||
<rbcode> | <rbcode> | ||
− | + | For Each attribute As Introspection.AttributeInfo In Introspection.GetType(window1).GetAttributes | |
− | |||
− | |||
ListBox1.AddRow attribute.Name | ListBox1.AddRow attribute.Name | ||
If attribute.Value.IsNull Then | If attribute.Value.IsNull Then | ||
− | ListBox1. | + | ListBox1.CellValueAt(ListBox1.LastAddedRowIndex,1) = "No Value" |
Else | Else | ||
− | ListBox1. | + | ListBox1.CellValueAt(ListBox1.LastAddedRowIndex,1) = attribute.Value |
End If | End If | ||
Next | Next |
Revision as of 16:10, 16 July 2019
Provides information on the attributes of an item via the Introspection system. Attributes are added to project items using the Inspector.
Properties | |||||
|
Notes
For attributes of classes, attributes are inherited from the parent class and attribute values are overridden if redefined by the subclass.
Add attributes to project items, methods, properties, constants, etc. by using the "Advanced" tab on the Inspector.
Sample Code
Suppose Window1 has three attributes: The first attribute contains the Name only and the others have both a Name and Value:
Name | Value |
---|---|
myName1 | |
myName2 | "Foo" |
myName3 | 23 |
The following code retrieves the attributes and displays them in a ListBox:
ListBox1.AddRow attribute.Name
If attribute.Value.IsNull Then
ListBox1.CellValueAt(ListBox1.LastAddedRowIndex,1) = "No Value"
Else
ListBox1.CellValueAt(ListBox1.LastAddedRowIndex,1) = attribute.Value
End If
Next
See Also
ConstructorInfo, MemberInfo, MethodInfo, ObjectIterator, ParameterInfo, PropertyInfo, TypeInfo classes; Introspection module; GetTypeInfo function; Xojo.Introspection namespace