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Diffstat (limited to 'libX11/man/XPutImage.man')
-rw-r--r-- | libX11/man/XPutImage.man | 806 |
1 files changed, 403 insertions, 403 deletions
diff --git a/libX11/man/XPutImage.man b/libX11/man/XPutImage.man index 010ac410f..131dcb32a 100644 --- a/libX11/man/XPutImage.man +++ b/libX11/man/XPutImage.man @@ -1,403 +1,403 @@ -.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium -.\" -.\" Permission is hereby granted, free of charge, to any person obtaining -.\" a copy of this software and associated documentation files (the -.\" "Software"), to deal in the Software without restriction, including -.\" without limitation the rights to use, copy, modify, merge, publish, -.\" distribute, sublicense, and/or sell copies of the Software, and to -.\" permit persons to whom the Software is furnished to do so, subject to -.\" the following conditions: -.\" -.\" The above copyright notice and this permission notice shall be included -.\" in all copies or substantial portions of the Software. -.\" -.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS -.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF -.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. -.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR -.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, -.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR -.\" OTHER DEALINGS IN THE SOFTWARE. -.\" -.\" Except as contained in this notice, the name of the X Consortium shall -.\" not be used in advertising or otherwise to promote the sale, use or -.\" other dealings in this Software without prior written authorization -.\" from the X Consortium. -.\" -.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by -.\" Digital Equipment Corporation -.\" -.\" Portions Copyright \(co 1990, 1991 by -.\" Tektronix, Inc. -.\" -.\" Permission to use, copy, modify and distribute this documentation for -.\" any purpose and without fee is hereby granted, provided that the above -.\" copyright notice appears in all copies and that both that copyright notice -.\" and this permission notice appear in all copies, and that the names of -.\" Digital and Tektronix not be used in in advertising or publicity pertaining -.\" to this documentation without specific, written prior permission. -.\" Digital and Tektronix makes no representations about the suitability -.\" of this documentation for any purpose. -.\" It is provided ``as is'' without express or implied warranty. -.\" -.\" -.ds xT X Toolkit Intrinsics \- C Language Interface -.ds xW Athena X Widgets \- C Language X Toolkit Interface -.ds xL Xlib \- C Language X Interface -.ds xC Inter-Client Communication Conventions Manual -.na -.de Ds -.nf -.\\$1D \\$2 \\$1 -.ft 1 -.\".ps \\n(PS -.\".if \\n(VS>=40 .vs \\n(VSu -.\".if \\n(VS<=39 .vs \\n(VSp -.. -.de De -.ce 0 -.if \\n(BD .DF -.nr BD 0 -.in \\n(OIu -.if \\n(TM .ls 2 -.sp \\n(DDu -.fi -.. -.de FD -.LP -.KS -.TA .5i 3i -.ta .5i 3i -.nf -.. -.de FN -.fi -.KE -.LP -.. -.de IN \" send an index entry to the stderr -.. -.de C{ -.KS -.nf -.D -.\" -.\" choose appropriate monospace font -.\" the imagen conditional, 480, -.\" may be changed to L if LB is too -.\" heavy for your eyes... -.\" -.ie "\\*(.T"480" .ft L -.el .ie "\\*(.T"300" .ft L -.el .ie "\\*(.T"202" .ft PO -.el .ie "\\*(.T"aps" .ft CW -.el .ft R -.ps \\n(PS -.ie \\n(VS>40 .vs \\n(VSu -.el .vs \\n(VSp -.. -.de C} -.DE -.R -.. -.de Pn -.ie t \\$1\fB\^\\$2\^\fR\\$3 -.el \\$1\fI\^\\$2\^\fP\\$3 -.. -.de ZN -.ie t \fB\^\\$1\^\fR\\$2 -.el \fI\^\\$1\^\fP\\$2 -.. -.de hN -.ie t <\fB\\$1\fR>\\$2 -.el <\fI\\$1\fP>\\$2 -.. -.de NT -.ne 7 -.ds NO Note -.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2 -.if \\n(.$ .if !'\\$1'C' .ds NO \\$1 -.ie n .sp -.el .sp 10p -.TB -.ce -\\*(NO -.ie n .sp -.el .sp 5p -.if '\\$1'C' .ce 99 -.if '\\$2'C' .ce 99 -.in +5n -.ll -5n -.R -.. -. \" Note End -- doug kraft 3/85 -.de NE -.ce 0 -.in -5n -.ll +5n -.ie n .sp -.el .sp 10p -.. -.ny0 -.TH XPutImage __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS" -.SH NAME -XPutImage, XGetImage, XGetSubImage \- transfer images -.SH SYNTAX -.HP -int XPutImage\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, GC \fIgc\fP\^, -XImage *\fIimage\fP\^, int \fIsrc_x\fP\^, int \fIsrc_y\fP\^, int -\fIdest_x\fP\^, int \fIdest_y\fP\^, unsigned int \fIwidth\fP\^, unsigned int -\fIheight\fP\^); -.HP -XImage *XGetImage\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, int -\fIx\fP\^, int \fIy\fP\^, unsigned int \fIwidth\fP\^, unsigned int -\fIheight\fP\^, unsigned long \fIplane_mask\fP\^, int \fIformat\fP\^); -.HP -XImage *XGetSubImage\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, int -\fIx\fP\^, int \fIy\fP\^, unsigned int \fIwidth\fP\^, unsigned int -\fIheight\fP\^, unsigned long \fIplane_mask\fP\^, int \fIformat\fP\^, XImage -*\fIdest_image\fP\^, int \fIdest_x\fP\^, \fIdest_y\fP\^); -.SH ARGUMENTS -.IP \fId\fP 1i -Specifies the drawable. -.IP \fIdest_image\fP 1i -Specifies the destination image. -.ds Dx , which are relative to the origin of the drawable \ -and are the coordinates of the subimage \ -or which are relative to the origin of the destination rectangle, \ -specify its upper-left corner, and determine where the subimage \ -is placed in the destination image -.IP \fIdest_x\fP 1i -.br -.ns -.IP \fIdest_y\fP 1i -Specify the x and y coordinates\*(Dx. -.IP \fIdisplay\fP 1i -Specifies the connection to the X server. -.IP \fIformat\fP 1i -Specifies the format for the image. -You can pass -.ZN XYPixmap -or -.ZN ZPixmap . -.IP \fIgc\fP 1i -Specifies the GC. -.IP \fIimage\fP 1i -Specifies the image you want combined with the rectangle. -.IP \fIplane_mask\fP 1i -Specifies the plane mask. -.\" *** JIM: NEED MORE INFO FOR THIS. *** -.IP \fIsrc_x\fP 1i -Specifies the offset in X from the left edge of the image defined -by the -.ZN XImage -structure. -.IP \fIsrc_y\fP 1i -Specifies the offset in Y from the top edge of the image defined -by the -.ZN XImage -structure. -.ds Wh \ of the subimage, which define the dimensions of the rectangle -.IP \fIwidth\fP 1i -.br -.ns -.IP \fIheight\fP 1i -Specify the width and height\*(Wh. -.ds Xy , which are relative to the origin of the drawable \ -and define the upper-left corner of the rectangle -.IP \fIx\fP 1i -.br -.ns -.IP \fIy\fP 1i -Specify the x and y coordinates\*(Xy. -.SH DESCRIPTION -The -.ZN XPutImage -function -combines an image with a rectangle of the specified drawable. -The section of the image defined by the src_x, src_y, width, and height -arguments is drawn on the specified part of the drawable. -If -.ZN XYBitmap -format is used, the depth of the image must be one, -or a -.ZN BadMatch -error results. -The foreground pixel in the GC defines the source for the one bits in the image, -and the background pixel defines the source for the zero bits. -For -.ZN XYPixmap -and -.ZN ZPixmap , -the depth of the image must match the depth of the drawable, -or a -.ZN BadMatch -error results. -.LP -If the characteristics of the image (for example, byte_order and bitmap_unit) -differ from what the server requires, -.ZN XPutImage -automatically makes the appropriate -conversions. -.LP -This function uses these GC components: -function, plane-mask, subwindow-mode, clip-x-origin, clip-y-origin, -and clip-mask. -It also uses these GC mode-dependent components: -foreground and background. -.LP -.ZN XPutImage -can generate -.ZN BadDrawable , -.ZN BadGC , -.ZN BadMatch , -and -.ZN BadValue -errors. -.LP -The -.ZN XGetImage -function returns a pointer to an -.ZN XImage -structure. -This structure provides you with the contents of the specified rectangle of -the drawable in the format you specify. -If the format argument is -.ZN XYPixmap , -the image contains only the bit planes you passed to the plane_mask argument. -If the plane_mask argument only requests a subset of the planes of the -display, the depth of the returned image will be the number of planes -requested. -If the format argument is -.ZN ZPixmap , -.ZN XGetImage -returns as zero the bits in all planes not -specified in the plane_mask argument. -The function performs no range checking on the values in plane_mask and ignores -extraneous bits. -.LP -.ZN XGetImage -returns the depth of the image to the depth member of the -.ZN XImage -structure. -The depth of the image is as specified when the drawable was created, -except when getting a subset of the planes in -.ZN XYPixmap -format, when the depth is given by the number of bits set to 1 in plane_mask. -.LP -If the drawable is a pixmap, -the given rectangle must be wholly contained within the pixmap, -or a -.ZN BadMatch -error results. -If the drawable is a window, -the window must be viewable, -and it must be the case that if there were no inferiors or overlapping windows, -the specified rectangle of the window would be fully visible on the screen -and wholly contained within the outside edges of the window, -or a -.ZN BadMatch -error results. -Note that the borders of the window can be included and read with -this request. -If the window has backing-store, the backing-store contents are -returned for regions of the window that are obscured by noninferior -windows. -If the window does not have backing-store, -the returned contents of such obscured regions are undefined. -The returned contents of visible regions of inferiors -of a different depth than the specified window's depth are also undefined. -The pointer cursor image is not included in the returned contents. -If a problem occurs, -.ZN XGetImage -returns NULL. -.LP -.ZN XGetImage -can generate -.ZN BadDrawable , -.ZN BadMatch , -and -.ZN BadValue -errors. -.LP -The -.ZN XGetSubImage -function updates dest_image with the specified subimage in the same manner as -.ZN XGetImage . -If the format argument is -.ZN XYPixmap , -the image contains only the bit planes you passed to the plane_mask argument. -If the format argument is -.ZN ZPixmap , -.ZN XGetSubImage -returns as zero the bits in all planes not -specified in the plane_mask argument. -The function performs no range checking on the values in plane_mask and ignores -extraneous bits. -As a convenience, -.ZN XGetSubImage -returns a pointer to the same -.ZN XImage -structure specified by dest_image. -.LP -The depth of the destination -.ZN XImage -structure must be the same as that of the drawable. -If the specified subimage does not fit at the specified location -on the destination image, the right and bottom edges are clipped. -If the drawable is a pixmap, -the given rectangle must be wholly contained within the pixmap, -or a -.ZN BadMatch -error results. -If the drawable is a window, -the window must be viewable, -and it must be the case that if there were no inferiors or overlapping windows, -the specified rectangle of the window would be fully visible on the screen -and wholly contained within the outside edges of the window, -or a -.ZN BadMatch -error results. -If the window has backing-store, -then the backing-store contents are returned for regions of the window -that are obscured by noninferior windows. -If the window does not have backing-store, -the returned contents of such obscured regions are undefined. -The returned contents of visible regions of inferiors -of a different depth than the specified window's depth are also undefined. -If a problem occurs, -.ZN XGetSubImage -returns NULL. -.LP -.ZN XGetSubImage -can generate -.ZN BadDrawable , -.ZN BadGC , -.ZN BadMatch , -and -.ZN BadValue -errors. -.SH DIAGNOSTICS -.TP 1i -.ZN BadDrawable -A value for a Drawable argument does not name a defined Window or Pixmap. -.TP 1i -.ZN BadGC -A value for a GContext argument does not name a defined GContext. -.TP 1i -.ZN BadMatch -An -.ZN InputOnly -window is used as a Drawable. -.TP 1i -.ZN BadMatch -Some argument or pair of arguments has the correct type and range but fails -to match in some other way required by the request. -.TP 1i -.ZN BadValue -Some numeric value falls outside the range of values accepted by the request. -Unless a specific range is specified for an argument, the full range defined -by the argument's type is accepted. Any argument defined as a set of -alternatives can generate this error. -.SH "SEE ALSO" -\fI\*(xL\fP +.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1994, 1996 X Consortium
+.\"
+.\" Permission is hereby granted, free of charge, to any person obtaining
+.\" a copy of this software and associated documentation files (the
+.\" "Software"), to deal in the Software without restriction, including
+.\" without limitation the rights to use, copy, modify, merge, publish,
+.\" distribute, sublicense, and/or sell copies of the Software, and to
+.\" permit persons to whom the Software is furnished to do so, subject to
+.\" the following conditions:
+.\"
+.\" The above copyright notice and this permission notice shall be included
+.\" in all copies or substantial portions of the Software.
+.\"
+.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
+.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+.\" OTHER DEALINGS IN THE SOFTWARE.
+.\"
+.\" Except as contained in this notice, the name of the X Consortium shall
+.\" not be used in advertising or otherwise to promote the sale, use or
+.\" other dealings in this Software without prior written authorization
+.\" from the X Consortium.
+.\"
+.\" Copyright \(co 1985, 1986, 1987, 1988, 1989, 1990, 1991 by
+.\" Digital Equipment Corporation
+.\"
+.\" Portions Copyright \(co 1990, 1991 by
+.\" Tektronix, Inc.
+.\"
+.\" Permission to use, copy, modify and distribute this documentation for
+.\" any purpose and without fee is hereby granted, provided that the above
+.\" copyright notice appears in all copies and that both that copyright notice
+.\" and this permission notice appear in all copies, and that the names of
+.\" Digital and Tektronix not be used in in advertising or publicity pertaining
+.\" to this documentation without specific, written prior permission.
+.\" Digital and Tektronix makes no representations about the suitability
+.\" of this documentation for any purpose.
+.\" It is provided ``as is'' without express or implied warranty.
+.\"
+.\"
+.ds xT X Toolkit Intrinsics \- C Language Interface
+.ds xW Athena X Widgets \- C Language X Toolkit Interface
+.ds xL Xlib \- C Language X Interface
+.ds xC Inter-Client Communication Conventions Manual
+.na
+.de Ds
+.nf
+.\\$1D \\$2 \\$1
+.ft 1
+.\".ps \\n(PS
+.\".if \\n(VS>=40 .vs \\n(VSu
+.\".if \\n(VS<=39 .vs \\n(VSp
+..
+.de De
+.ce 0
+.if \\n(BD .DF
+.nr BD 0
+.in \\n(OIu
+.if \\n(TM .ls 2
+.sp \\n(DDu
+.fi
+..
+.de FD
+.LP
+.KS
+.TA .5i 3i
+.ta .5i 3i
+.nf
+..
+.de FN
+.fi
+.KE
+.LP
+..
+.de IN \" send an index entry to the stderr
+..
+.de C{
+.KS
+.nf
+.D
+.\"
+.\" choose appropriate monospace font
+.\" the imagen conditional, 480,
+.\" may be changed to L if LB is too
+.\" heavy for your eyes...
+.\"
+.ie "\\*(.T"480" .ft L
+.el .ie "\\*(.T"300" .ft L
+.el .ie "\\*(.T"202" .ft PO
+.el .ie "\\*(.T"aps" .ft CW
+.el .ft R
+.ps \\n(PS
+.ie \\n(VS>40 .vs \\n(VSu
+.el .vs \\n(VSp
+..
+.de C}
+.DE
+.R
+..
+.de Pn
+.ie t \\$1\fB\^\\$2\^\fR\\$3
+.el \\$1\fI\^\\$2\^\fP\\$3
+..
+.de ZN
+.ie t \fB\^\\$1\^\fR\\$2
+.el \fI\^\\$1\^\fP\\$2
+..
+.de hN
+.ie t <\fB\\$1\fR>\\$2
+.el <\fI\\$1\fP>\\$2
+..
+.de NT
+.ne 7
+.ds NO Note
+.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
+.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
+.ie n .sp
+.el .sp 10p
+.TB
+.ce
+\\*(NO
+.ie n .sp
+.el .sp 5p
+.if '\\$1'C' .ce 99
+.if '\\$2'C' .ce 99
+.in +5n
+.ll -5n
+.R
+..
+. \" Note End -- doug kraft 3/85
+.de NE
+.ce 0
+.in -5n
+.ll +5n
+.ie n .sp
+.el .sp 10p
+..
+.ny0
+.TH XPutImage __libmansuffix__ __xorgversion__ "XLIB FUNCTIONS"
+.SH NAME
+XPutImage, XGetImage, XGetSubImage \- transfer images
+.SH SYNTAX
+.HP
+int XPutImage\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, GC \fIgc\fP\^,
+XImage *\fIimage\fP\^, int \fIsrc_x\fP\^, int \fIsrc_y\fP\^, int
+\fIdest_x\fP\^, int \fIdest_y\fP\^, unsigned int \fIwidth\fP\^, unsigned int
+\fIheight\fP\^);
+.HP
+XImage *XGetImage\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, int
+\fIx\fP\^, int \fIy\fP\^, unsigned int \fIwidth\fP\^, unsigned int
+\fIheight\fP\^, unsigned long \fIplane_mask\fP\^, int \fIformat\fP\^);
+.HP
+XImage *XGetSubImage\^(\^Display *\fIdisplay\fP\^, Drawable \fId\fP\^, int
+\fIx\fP\^, int \fIy\fP\^, unsigned int \fIwidth\fP\^, unsigned int
+\fIheight\fP\^, unsigned long \fIplane_mask\fP\^, int \fIformat\fP\^, XImage
+*\fIdest_image\fP\^, int \fIdest_x\fP\^, \fIdest_y\fP\^);
+.SH ARGUMENTS
+.IP \fId\fP 1i
+Specifies the drawable.
+.IP \fIdest_image\fP 1i
+Specifies the destination image.
+.ds Dx , which are relative to the origin of the drawable \
+and are the coordinates of the subimage \
+or which are relative to the origin of the destination rectangle, \
+specify its upper-left corner, and determine where the subimage \
+is placed in the destination image
+.IP \fIdest_x\fP 1i
+.br
+.ns
+.IP \fIdest_y\fP 1i
+Specify the x and y coordinates\*(Dx.
+.IP \fIdisplay\fP 1i
+Specifies the connection to the X server.
+.IP \fIformat\fP 1i
+Specifies the format for the image.
+You can pass
+.ZN XYPixmap
+or
+.ZN ZPixmap .
+.IP \fIgc\fP 1i
+Specifies the GC.
+.IP \fIimage\fP 1i
+Specifies the image you want combined with the rectangle.
+.IP \fIplane_mask\fP 1i
+Specifies the plane mask.
+.\" *** JIM: NEED MORE INFO FOR THIS. ***
+.IP \fIsrc_x\fP 1i
+Specifies the offset in X from the left edge of the image defined
+by the
+.ZN XImage
+structure.
+.IP \fIsrc_y\fP 1i
+Specifies the offset in Y from the top edge of the image defined
+by the
+.ZN XImage
+structure.
+.ds Wh \ of the subimage, which define the dimensions of the rectangle
+.IP \fIwidth\fP 1i
+.br
+.ns
+.IP \fIheight\fP 1i
+Specify the width and height\*(Wh.
+.ds Xy , which are relative to the origin of the drawable \
+and define the upper-left corner of the rectangle
+.IP \fIx\fP 1i
+.br
+.ns
+.IP \fIy\fP 1i
+Specify the x and y coordinates\*(Xy.
+.SH DESCRIPTION
+The
+.ZN XPutImage
+function
+combines an image with a rectangle of the specified drawable.
+The section of the image defined by the src_x, src_y, width, and height
+arguments is drawn on the specified part of the drawable.
+If
+.ZN XYBitmap
+format is used, the depth of the image must be one,
+or a
+.ZN BadMatch
+error results.
+The foreground pixel in the GC defines the source for the one bits in the image,
+and the background pixel defines the source for the zero bits.
+For
+.ZN XYPixmap
+and
+.ZN ZPixmap ,
+the depth of the image must match the depth of the drawable,
+or a
+.ZN BadMatch
+error results.
+.LP
+If the characteristics of the image (for example, byte_order and bitmap_unit)
+differ from what the server requires,
+.ZN XPutImage
+automatically makes the appropriate
+conversions.
+.LP
+This function uses these GC components:
+function, plane-mask, subwindow-mode, clip-x-origin, clip-y-origin,
+and clip-mask.
+It also uses these GC mode-dependent components:
+foreground and background.
+.LP
+.ZN XPutImage
+can generate
+.ZN BadDrawable ,
+.ZN BadGC ,
+.ZN BadMatch ,
+and
+.ZN BadValue
+errors.
+.LP
+The
+.ZN XGetImage
+function returns a pointer to an
+.ZN XImage
+structure.
+This structure provides you with the contents of the specified rectangle of
+the drawable in the format you specify.
+If the format argument is
+.ZN XYPixmap ,
+the image contains only the bit planes you passed to the plane_mask argument.
+If the plane_mask argument only requests a subset of the planes of the
+display, the depth of the returned image will be the number of planes
+requested.
+If the format argument is
+.ZN ZPixmap ,
+.ZN XGetImage
+returns as zero the bits in all planes not
+specified in the plane_mask argument.
+The function performs no range checking on the values in plane_mask and ignores
+extraneous bits.
+.LP
+.ZN XGetImage
+returns the depth of the image to the depth member of the
+.ZN XImage
+structure.
+The depth of the image is as specified when the drawable was created,
+except when getting a subset of the planes in
+.ZN XYPixmap
+format, when the depth is given by the number of bits set to 1 in plane_mask.
+.LP
+If the drawable is a pixmap,
+the given rectangle must be wholly contained within the pixmap,
+or a
+.ZN BadMatch
+error results.
+If the drawable is a window,
+the window must be viewable,
+and it must be the case that if there were no inferiors or overlapping windows,
+the specified rectangle of the window would be fully visible on the screen
+and wholly contained within the outside edges of the window,
+or a
+.ZN BadMatch
+error results.
+Note that the borders of the window can be included and read with
+this request.
+If the window has backing-store, the backing-store contents are
+returned for regions of the window that are obscured by noninferior
+windows.
+If the window does not have backing-store,
+the returned contents of such obscured regions are undefined.
+The returned contents of visible regions of inferiors
+of a different depth than the specified window's depth are also undefined.
+The pointer cursor image is not included in the returned contents.
+If a problem occurs,
+.ZN XGetImage
+returns NULL.
+.LP
+.ZN XGetImage
+can generate
+.ZN BadDrawable ,
+.ZN BadMatch ,
+and
+.ZN BadValue
+errors.
+.LP
+The
+.ZN XGetSubImage
+function updates dest_image with the specified subimage in the same manner as
+.ZN XGetImage .
+If the format argument is
+.ZN XYPixmap ,
+the image contains only the bit planes you passed to the plane_mask argument.
+If the format argument is
+.ZN ZPixmap ,
+.ZN XGetSubImage
+returns as zero the bits in all planes not
+specified in the plane_mask argument.
+The function performs no range checking on the values in plane_mask and ignores
+extraneous bits.
+As a convenience,
+.ZN XGetSubImage
+returns a pointer to the same
+.ZN XImage
+structure specified by dest_image.
+.LP
+The depth of the destination
+.ZN XImage
+structure must be the same as that of the drawable.
+If the specified subimage does not fit at the specified location
+on the destination image, the right and bottom edges are clipped.
+If the drawable is a pixmap,
+the given rectangle must be wholly contained within the pixmap,
+or a
+.ZN BadMatch
+error results.
+If the drawable is a window,
+the window must be viewable,
+and it must be the case that if there were no inferiors or overlapping windows,
+the specified rectangle of the window would be fully visible on the screen
+and wholly contained within the outside edges of the window,
+or a
+.ZN BadMatch
+error results.
+If the window has backing-store,
+then the backing-store contents are returned for regions of the window
+that are obscured by noninferior windows.
+If the window does not have backing-store,
+the returned contents of such obscured regions are undefined.
+The returned contents of visible regions of inferiors
+of a different depth than the specified window's depth are also undefined.
+If a problem occurs,
+.ZN XGetSubImage
+returns NULL.
+.LP
+.ZN XGetSubImage
+can generate
+.ZN BadDrawable ,
+.ZN BadGC ,
+.ZN BadMatch ,
+and
+.ZN BadValue
+errors.
+.SH DIAGNOSTICS
+.TP 1i
+.ZN BadDrawable
+A value for a Drawable argument does not name a defined Window or Pixmap.
+.TP 1i
+.ZN BadGC
+A value for a GContext argument does not name a defined GContext.
+.TP 1i
+.ZN BadMatch
+An
+.ZN InputOnly
+window is used as a Drawable.
+.TP 1i
+.ZN BadMatch
+Some argument or pair of arguments has the correct type and range but fails
+to match in some other way required by the request.
+.TP 1i
+.ZN BadValue
+Some numeric value falls outside the range of values accepted by the request.
+Unless a specific range is specified for an argument, the full range defined
+by the argument's type is accepted. Any argument defined as a set of
+alternatives can generate this error.
+.SH "SEE ALSO"
+\fI\*(xL\fP
|