https://learn.microsoft.com/zh-cn/dotnet/api/system.windows.forms.statusbar.showpanels?view=netframework-4.8.1&viewFallbackFrom=windowsdesktop-10.0
StatusBar.ShowPanels Property (System.Windows.Forms) | Microsoft Learn
Gets or sets a value indicating whether any panels that have been added to the control are displayed.
property systemwindows formsstatusbarmicrosoftlearn