XDrawImageString, XDrawImageString16 - draw image text
SYNTAX
int XDrawImageString(Display *display, Drawable d, GC
gc, int x, int y, char *string, int
length);
int XDrawImageString16(Display *display, Drawable d, GC
gc, int x, int y, XChar2b *string, int
length);
ARGUMENTS
d
Specifies the drawable.
display
Specifies the connection to the X server.
gc
Specifies the GC.
length
Specifies the number of characters in the string argument.
string
Specifies the character string.
x
y
Specify the x and y coordinates, which are relative to the origin of the specified drawable and define the origin of the first character.
DESCRIPTION
The
XDrawImageString16
function is similar to
XDrawImageString
except that it uses 2-byte or 16-bit characters.
Both functions also use both the foreground and background pixels
of the GC in the destination.
The effect is first to fill a
destination rectangle with the background pixel defined in the GC and then
to paint the text with the foreground pixel.
The upper-left corner of the filled rectangle is at:
[x, y - font-ascent]
The width is:
overall-width
The height is:
font-ascent + font-descent
The overall-width, font-ascent, and font-descent
are as would be returned by
XQueryTextExtents
using gc and string.
The function and fill-style defined in the GC are ignored for these functions.
The effective function is
GXcopy,
and the effective fill-style is
FillSolid.
For fonts defined with 2-byte matrix indexing
and used with
XDrawImageString,
each byte is used as a byte2 with a byte1 of zero.
Both functions use these GC components:
plane-mask, foreground, background, font, subwindow-mode, clip-x-origin,
clip-y-origin, and clip-mask.
XDrawImageString
and
XDrawImageString16
can generate
BadDrawable,
BadGC,
and
BadMatch
errors.
DIAGNOSTICS
BadDrawable
A value for a Drawable argument does not name a defined Window or Pixmap.
BadGC
A value for a GContext argument does not name a defined GContext.
BadMatch
An
InputOnly
window is used as a Drawable.
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.
