CallByName Function (VB6) |
Named Arguments
No
Syntax
CallByName(object, procedurename, calltype, _ [argument1,..., argumentn])
object
Use: Required
Data Type: Object
A reference to the object containing the procedure being called.
procedurename
Use: Required
Data Type: String
The name of the procedure to call.
calltype
Use: Required
Data Type: vbCallType constant
A constant that indicates the type of procedure being called. vbCallType constants are listed in the next table.
arguments
Use: Optional
Data Type: Variant
Any number of variant arguments, depending on the argument list of the procedure to call.
Constant Value Description vbGet
2 The called procedure is a Property Get vbLet
4 The called procedure is a Property Let vbMethod
1 The called procedure is a method; this can be a Sub or a Function within object vbSet
8 The called procedure is a Property Set
Return Value
Depends on the return value (if any) of the called procedure.
Description
Provides a flexible method for calling a public procedure in a VB object module. Since procedurename is a string expression, rather than the hard-coded name of a routine, it's possible to call routines dynamically at runtime with a minimum of coding.
Rules at a Glance
The return type of CallByName is the return type of the called procedure.
procedurename isn't case sensitive.
Programming Tips and Gotchas
At last, VB allows you to create a call to a procedure using a string. This means that the call can be flexible at runtime.
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