thanks for the links.
With the localization, I have the problem I'm not able to localize the Context-Menu Items.
In the Help for WinForms there are some resource keys for the COntext-Menu. https://docs.telerik.com/devtools/winforms/controls/pdfviewer/localization
These are missing in WPF. So are they not changable there?
The Search-Popup Localization changes with the resx, but not the Contextmenu itself.
I tried around a bit with keys like FixedDocumentViewers_ContextMenu_SelectAll or FixedDocumentViewers_SelectAll, without success.
It's sad, that images aren't able to copy, but well, I have to deal with it.