In Dolphin Ctrl+Enter opens the Properties dialog. In the Desktop Folder View this keyboard shortcut is not assigned and Ctrl+Enter behaves like Enter.
You mean Alt+Enter?
Git commit b4f3a883cf91257e5066c5bf60f48feab59c4edc by Kai Uwe Broulik.
Committed on 05/02/2018 at 12:40.
Pushed by broulik into branch 'master'.
[Folder View] Let Alt+Enter open properties dialog
This is what Dolphin does. The shortcut is hardcoded here and also common on other platforms.
Differential Revision: https://phabricator.kde.org/D10316
M +8 -2 containments/desktop/package/contents/ui/FolderView.qml
M +24 -3 containments/desktop/plugins/folder/foldermodel.cpp
M +2 -0 containments/desktop/plugins/folder/foldermodel.h