3. System Classes : ButtonField Class : DynExpr Class
 
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DynExpr Class
DynExpr Attributes
Attribute
Data Type
Description
Inherited
From
ClassName
varchar(32)
Gives the name of an object's actual type (as opposed to its declared type) (R)
Object
ClientData
Object
Provides a way to associate data with an object (RW)
Object
InstanceIdentifier
integer
Contains a value that uniquely identifies an instance of an allocated object (R)
Object
InstanceReferences
integer
Contains the current number of references to the object (R)
Object
 
DynExpr Methods
Method
Return
Value
Description
Inherited From
Assign
(fromdynexpr =
DynExpr)
integer
Assigns a dynamic expression's value to another dynamic expression
Defined
Duplicate()
DynExpr
Makes a duplicate of the object, placing a reference to the new object in a reference variable
Object
GetAttribute
(
attributename = byref(variable)
{,attributename = byref(variable)})
integer
Gets the values of any number of attributes for the object
Object
GetField
(field = byref(
variable))
integer
Reevaluates the address of the field object or cell attribute associated with that field or table field cell and places the address in the specified variable
Defined
GetValue
(value = byref(
variable))
integer
Reevaluates the expression that was specified when the DynExpr object was created and places the result in the specified variable
Defined
IsA
(class =
classname)
integer
Returns TRUE if the object is of the same class as, or one of the subclasses of, the class specified by classname
Object
SetAttribute
(
attributename = value
{,attributename = value})
integer
Sets any number of attributes for the object
Object
SetValue
(value =
expression)
integer
Reevaluates the expression address that was specified when the DynExpr object was created and sets it equal to the value of the specified expression
Defined
StringValue()
varchar(256)
Reevaluates the expression that was specified when the DynExpr was created and converts the result to a string
Defined