Supported DDE transactions

The application includes support for some simple Dynamic Data Exchange (DDE ) transactions to allow other Windows applications to send data to the 3270 session and receive data from the 3270 session. Only the following DDE support is included.

Application: QWS3270X

Topic: A DDE topic can be entered on the Miscellaneous dialog on the Options/Sessions menu to allow DDE access to TN3270 sessions. The default is SESSIONA.

To inquire about the connection status: Use a WM_DDE_REQUEST message with a data item of "connected". This will return a field containing "connected=yes" if currently connected to a 3270 host or "connected=no" if not.

To inquire about the keyboard locked status: Use a WM_DDE_REQUEST message with a data item of "locked". This will return a field containing "locked=yes" if the keyboard is currently locked (input is inhibited and xSYS is displayed on the status line) or "locked=no" if not.

To send data to the 3270 session: Use a WM_DDE_POKE message with a data item of "3270_data" and data that is in the same syntax as the scripting language.

To request the current screen contents: Use a WM_DDE_REQUEST message with a data item of "3270_data". This will return an array containing the screen data. Please note that all nulls in the screen data will be replaced with blanks.

To execute menu commands: Use a WM_DDE_EXECUTE for the following menu items:

[host(close)]

[host(print_screen)]

[edit(copy_all)]

[edit(paste)]

These commands are not case sensitive "HOST(CLOSE)" is the same as "host(close)". These commands work just as if you entered them from the application window.