WinDDE: handling of ASCII/Wide char data

WinDDE can dialog with applications that require data in ASCII and applications that require wide char data such as UTF-16.

WinDDE can now dialog both with applications that require data in ASCII and with applications that require wide char data such as UTF-16. Since GDC 2.22.x, only wide char data were supported. Prior to 2.22.x, WinDDE was only able to handle ASCII. By default, WinDDE will automatically guess what is the best encoding when connecting to the DDE server. However, in some instances the returned information can be misleading. In these cases, you will have to set an optional 'encoding' parameter manually in the following DDE functions: DDEConnect, DDEExecute, DDEPeek and DDEPoke. Possible values are: "UNICODE" and "ASCII". For instance:
CALL ui.Interface.frontCall("WINDDE","DDEPoke", 
 [prog,"Sheet1","R1C1","value","UNICODE"], [res] );

For more detail, see the WinDDE documentation in the Genero Business Development Language User Guide.