Print in Windows

In Windows, you can choose either of the following two printing modes:

• Default mode
• Windows Passthrough Printing (WPP)

In default mode, OpenEdge uses the Windows device drivers. This mode is sufficient for all basic printing that does not use any printer access control codes, such as those sent by PUT or DISPLAY statements.

In WPP mode, OpenEdge bypasses the Windows device drivers. This means you can send control codes (such as POSTSCRIPT commands) directly to the printer with the PUT or DISPLAY statements. To enable windows passthrough printing for a session, use the Windows Passthrough Printing (-Wa -wpp) startup parameter. You can only use this parameter on the command line.

You cannot use WPP mode with a POSTSCRIPT printer to print OpenEdge standard reports, such as those produced by the Data Dictionary.

For a complete description of the PUT and DISPLAY statements, see ABL Reference. For more information about the Windows Passthrough Printing (-Wa -wpp) startup parameter, see Startup Command and Parameter Reference.