XpQueryScreens.man   [plain text]

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.TH XpQueryScreens 3Xp __xorgversion__ "XPRINT FUNCTIONS"
.SH NAME
XpQueryScreens \- Queries an X Server to determine which screens, of all the 
screens on the server, support the X Print Service Extension
.SH SYNOPSIS
.br
      cc [ flag... ] file... -lXp [ library... ]	
.br
      #include <X11/extensions/Print.h>
.LP    
.B Screen **XpQueryScreens
(
.I display, 
.I list_count_return 
)
.br
      Display *\fIdisplay\fP\^;
.br
      int *\fIlist_count_return\fP\^;
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I display
Specifies a pointer to the Display structure; returned from XOpenDisplay.
.TP
.I list_count_return
Returns the number of screens in the list.
.SH DESCRIPTION
.LP
This request returns a non-NULL pointer to a list of screen pointers if one or 
more screens support the X Print Service Extension; otherwise it returns NULL.

XpQueryScreens determines if the X Print Service Extension is present, and if 
so, which of all the screens on the X Server support the X Print Service 
Extension. Unlike many other extensions, the X Print Service Extension may be 
restricted to a subset of all available screens - for example, a single X Server 
may be supporting video displays on some screens and printers on others.

The list of screen pointers can be freed by calling XFree.