Identifies identifiers that hide/"shadow" other identifiers otherwise accessible in that scope.

Inspection type: CodeQualityIssues

Default severity: DoNotShow

This inspection will not run by default, it must be manually enabled in Code Inspections configuration settings by selecting another severity level.


Global namespace contains a number of perfectly legal identifier names that user code can use. But using these names in user code effectively "hides" the global ones. In general, avoid shadowing global-scope identifiers if possible


The following quick-fixes are available for this inspection:

  • IgnoreOnce: Adds an '@Ignore annotation to ignore a specific inspection result. Applicable to all inspections whose results can be annotated in a module.
  • IgnoreInModule: Adds an '@IgnoreModule annotation to ignore a inspection results for a specific inspection inside a whole module. Applicable to all inspections whose results can be annotated in a module.


Each example is a self-contained MCVE showing the feature in a single specific scenario.

Standard Module
Named Module1 by default, these are general-purpose standard procedural modules.
Class Module
Named Class1 by default, these modules define the default interface for an object of that type.
Predeclared Class
A class module with its VB_PredeclaredId attribute set to True (with or without a @PredeclaredId annotation).
Interface Module
Abstract interfaces are class modules (with or without an @Interface annotation) whose default interface is not a class type intended to be instantiated.
UserForm Module
A predeclared class with a design-time visual designer using the MSForms UI framework.
Document Module
Owned by the host application, these class modules belong to the host document and may handle various events fired by the host application.

The following code should trigger this inspection:


Private MsgBox As String ' hides the global-scope VBA.Interaction.MsgBox function in this module.
Public Sub DoSomething()
    MsgBox = "Test" ' refers to the module variable in scope.
    VBA.Interaction.MsgBox MsgBox ' global function now needs to be fully qualified to be accessed.
End Sub

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