This system function returns property values for a GUI object.
X is a namespace reference or a character vector containing the name of the object. Y is a character vector or a vector of character vectors containing the name(s) of the properties whose values are required. The result R contains the current values of the specified properties. If Y specifies a single property name, a single property value is returned. If Y specifies more than one property, R is a vector with one element per name in Y.
If X refers to a non-existent GUI name, a VALUE ERROR is reported. If Y refers to a non-existent property, or to a property that is not defined for the type of object X, a DOMAIN ERROR is reported.
GUI objects are named relative to the current namespace. A null value of X (referring to the namespace in which the function is being evaluated) may be omitted. The following examples are equivalent:
'F1.B1' ⎕WG 'Caption'
'B1' F1.⎕WG 'Caption'
'' F1.B1.⎕WG 'Caption'
F1.B1.⎕WG 'Caption'
'F1' ⎕WC 'Form' 'TEST'
'F1' ⎕WG 'Caption'
TEST
'F1' ⎕WG 'MaxButton'
1
'F1' ⎕WG 'Size'
50 50
]display 'F1' ⎕WG 'Caption' 'MaxButton' 'Size'
┌→─────────────────┐
│ ┌→───┐ ┌→────┐ │
│ │TEST│ 1 │50 50│ │
│ └────┘ └~────┘ │
└∊─────────────────┘