PreFilterMessage MethodSave PDFSave selected topicSave selected topic and subtopicsSave all topicsShareShare to emailCopy topic URLLast UpdatedAug 21, 20261 minute readHMI and SCADAOperations Management Interface 2026 intercept message related to mouse, keyboard and touchSyntax Visual BasicC#C++/CLI 'Declaration Public Function PreFilterMessage( _ ByRef m As Message _ ) As Boolean public bool PreFilterMessage( ref Message m ) public: bool PreFilterMessage( Message% m ) Parametersm window message RequirementsTarget Platforms:Windows 11 Enterprise, IoT Enterprise 2024 LTSC 24H2 Windows Server 2022 LTSC Standard and Datacenter Windows Server 2025 LTSC Standard and Datacenter See AlsoReferenceMessageFilter ClassMessageFilter Members In This Topic
intercept message related to mouse, keyboard and touchSyntax Visual BasicC#C++/CLI 'Declaration Public Function PreFilterMessage( _ ByRef m As Message _ ) As Boolean public bool PreFilterMessage( ref Message m ) public: bool PreFilterMessage( Message% m ) Parametersm window message RequirementsTarget Platforms:Windows 11 Enterprise, IoT Enterprise 2024 LTSC 24H2 Windows Server 2022 LTSC Standard and Datacenter Windows Server 2025 LTSC Standard and Datacenter See AlsoReferenceMessageFilter ClassMessageFilter Members
intercept message related to mouse, keyboard and touchSyntax Visual BasicC#C++/CLI 'Declaration Public Function PreFilterMessage( _ ByRef m As Message _ ) As Boolean public bool PreFilterMessage( ref Message m ) public: bool PreFilterMessage( Message% m ) Parametersm window message RequirementsTarget Platforms:Windows 11 Enterprise, IoT Enterprise 2024 LTSC 24H2 Windows Server 2022 LTSC Standard and Datacenter Windows Server 2025 LTSC Standard and Datacenter See AlsoReferenceMessageFilter ClassMessageFilter Members
intercept message related to mouse, keyboard and touchSyntax Visual BasicC#C++/CLI 'Declaration Public Function PreFilterMessage( _ ByRef m As Message _ ) As Boolean public bool PreFilterMessage( ref Message m ) public: bool PreFilterMessage( Message% m ) Parametersm window message RequirementsTarget Platforms:Windows 11 Enterprise, IoT Enterprise 2024 LTSC 24H2 Windows Server 2022 LTSC Standard and Datacenter Windows Server 2025 LTSC Standard and Datacenter See AlsoReferenceMessageFilter ClassMessageFilter Members