VBC09323 — Wrong number of arguments or invalid argument for event

Severity: Error · Family: VBC (static semantics / abstract syntax tree) · Source metadata: VBCompileErrorInfo

The arguments of a RaiseEvent statement are not compatible with the parameter list of the event it raises.

MS-VBAL §5.4.2.20 RaiseEvent Statement requires the event's parameter list to be compatible with the argument list according to the rules of procedure invocation (MS-VBAL §5.3.1.11), all parameters and arguments being treated as positional.

This code is raised by StatementStaticSemanticsEvaluator. The verbose detail says how many arguments the event takes and how many were given.

How it is raised

Situation	Example	Resolution
Fewer arguments than the event's required parameters.	`RaiseEvent Changed` for `Event Changed(ByVal Value As Long)`	Pass the argument: `RaiseEvent Changed(1)`.
More arguments than the event has parameters.	`RaiseEvent Closed(1)` for `Event Closed()`	Remove the extra argument, or declare the parameter on the event.
A variable passed to a `ByRef` parameter is not of exactly its type.	`RaiseEvent Bump(anInteger)` for `Event Bump(ByRef Count As Long)`	Pass a variable of the parameter's type. A value, `RaiseEvent Bump(5)`, is Let-assigned to a new local and needs none.
An object parameter is given something that is not an object.	`RaiseEvent ShapeOf(aLong)` for `Event ShapeOf(ByVal S As Gadget)`	Pass an object of a class, or `Object`; a `ByVal` parameter takes a `Variant` too, a `ByRef` one does not.

An argument that cannot be Let-coerced to the type of a ByVal parameter is reported with the code of that coercion (VBC09310, type mismatch), not with this one.

Notes

Arguments are positional only: a RaiseEvent has no named arguments. An event's parameters do not define variables; they describe the arguments the statement must provide, and the parameter list a handler must have.

Table of Contents

VBC09323 — Wrong number of arguments or invalid argument for event

How it is raised

Notes

See also