# Java Client Customizing

## DDE/OLE Support

| Due to the fact that the Java Client is not a native Windows application, following inbound and outbound DDE/OLE calls are NOT supported: dde_cal dde_opn dde_put dde_rec 3rd party applications which want to connect to the Java Client on the client side would need to use the ECI API instead. The function dde_com and dde_com_wai for launching an application on the client are supported in the Java Client.