Tooltip of floating document window

Hello,

WindowChrome makes a custom template for Window and that template defines WPF buttons to use in the custom window title bar that is used in place of the native Win32 title bar.  We define tooltips for those buttons and have them use string resource values as the tooltip content.  The tooltips do default to English but can be overridden at app startup as you saw.

We are not aware of anything in WPF that provides access to a localized tooltip text for such buttons though, so you must unfortunately manually translate those string resources.  If you do find some way to obtain the localized tooltip text, you could get those localized values at app startup and call SR.SetCustomString() to apply the localized values.