Text Viewer SDK ActiveX Control ReferenceProperties EnableMouseWheelZoom Text Viewer ActiveX Control EnableMouseWheelZoom Enable/Disable allow mouse wheel zoom the page. TextReader1.EnableMouseWheelZoom[=bool] Parameterbooltrue - enable, false -disable.RemarkThis property is Read/Write. Example VB.NET SyntaxAxTextReaderAx1.EnableMouseWheelZoom = True Visual Basic SyntaxTextViewer1.EnableMouseWheelZoom = True