Window I/O APIs

The majority of window I/O operations are performed through calls to the low-level services interfaces. If specified on the window description or through an explicit call to the Set Low-Level Environment Window Mode (QsnSetEnvWinMod) API, the low-level interfaces can operate in a relative mode, where operations such as Set Field (QsnSetFld) are performed relative to the current window. See Set Low-Level Environment Window Mode (QsnSetEnvWinMod) API for details.

The APIs specific to window I/O operations are:

• Clear Window (QsnClrWin) clears the window area.
• Clear Window Message (QsnClrWinMsg) clears the message for a given window.
• Display Window (QsnDspWin) draws the window border and clears the window area.
• Put Window Message (QsnPutWinMsg) puts a message on the message line for a given window.