Overview of the Solaris Transparent Overlay Window API
The transparent overlay window API includes the routines listed in Table 6-2 . These routines are provided by libXext.so. To use the Solaris overlay routines, do the following:
Table 6-2 List of Transparent Overlay Window Routines
NameDescription
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XSolarisOvlCreateWindowCreates
an overlay window.XSolarisOvlIsOverlayWindowIndicates
whether a window is an overlay
window.XSolarisOvlSetPaintTypeSpecifies the type of paint
rendered by subsequent Xlib
drawing.XSolarisOvlGetPaintTypeGets the current paint
type.XSolarisOvlSetWindowTransparentSets the background
state of an overlay window to be
transparent.XSolarisOvlCopyPaintTypeRenders opaque and
transparent paint into the destination drawable based on the paint type
attributes of the pixels in the source
drawable.XSolarisOvlCopyAreaAndPaintTypeCopies the area and
paint type from one pair of drawables to
another.XReadScreenReturns the displayed colors in a
rectangle of the screen.XSolarisOvlSelectPartnerReturns the
optimal overlay or underlay visual for an existing
visual.XSolarisOvlSelectPairSelects an optimal
overlay/underlay pair that best meets a set of defined criteria for the
overlay and underlay visuals.
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The remainder of this chapter discusses the transparent overlay API routines.
