XDrawString(3)

NAME
XDrawString, XDrawString16 - draw text characters

SYNTAX

int XDrawString(Display *display, Drawable d, GC gc, int x, int y, char *string, int length);

int XDrawString16(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 orig.

DESCRIPTION
Each character image, as defined by the font in the GC, is treated as an additional mask for a fill operation on the drawable. The drawable is modified only where the font character has a bit set to 1. For fonts defined with 2-byte matrix indexing and used with each byte is used as a byte2 with a byte1 of zero.

Both functions use these GC components: function, plane-mask, fill-style, font, subwindow-mode, clip-x-origin, clip-y-origin, and clip-mask. They also use these GC mode-dependent components: foreground, background, tile, stipple, tile-stipple-x-origin, and tile-stipple-y-origin.

and can generate and errors.

DIAGNOSTICS

A value for a Drawable argument does not name a defined Window or Pixmap.

A value for a GContext argument does not name a defined GContext.

An  window is used as a Drawable.

Some argument or pair of arguments has the correct type and range but fails
    to match in some other way required by the request.

SEE ALSO
XDrawImageString(3), XDrawText(3), XLoadFont(3)
Xlib - C Language X Interface