3.9 New Features for Non-Windows Applications

Windows 3.1 provides performance enhancements, font selection, and mouse
support for non-Windows applications running in a window. The table below
describes these features, and indicates the locations of documentation and sample source code to assist with the addition of these features to third party drivers.

Feature

Description

Graphics applications in a window	The VGA VDD now supports execution of VGA graphics-mode applications in a window.
Smooth scrolling	The VDD has been improved to provide smoother scrolling of text based non-Windows applications.
Improved color matching	The interface between the VDD and 386 enhanced-mode grabber has been changed to provide better representation of non-Windows application colors when running in a window.
Font selection	Font size can now be changed for text mode non-Windows applications running in a window. Changes are required in the 386 enhanced-mode grabber.
Mouse support	The interface between the virtual-mouse device (VMD), VDD, 386 enhanced-mode grabber, and the MS-DOS mouse driver has been enhanced to provide support for mouse operations in non-Windows applications.