Just paste the following string into the URL field when creating a new entry in KeePass. You only have to replace three parameters manually:
- system
- sysname
- language
The first two parameters have to match exactly the system settings in your SAP Gui.
cmd://sapshcut -maxgui -system=E01 -sysname="SAP Dev System" -client=011 -user={USERNAME} -pw={PASSWORD} -language=DE

With a single click on the URL string, the SAP Gui will open and log you in.
