XDrawString(3X11) — NEWS-OS Programmer’s Manual

NAME

XDrawString, XDrawString16 − draw text characters

SYNTAX

XDrawString(display, d, gc, x, y, string, length)
      Display ∗display;
      Drawable d;
      GC gc;
      int x, y;
      char ∗string;
      int length; XDrawString16(display, d, gc, x, y, string, length)
      Display ∗display;
      Drawable d;
      GC gc;
      int x, y;
      XChar2b ∗string;
      int length;

ARGUMENTS

dSpecifies the drawable.

displaySpecifies the connection to the X server.

gcSpecifies the GC.

lengthSpecifies the number of characters in the string argument.

stringSpecifies the character string.

ySpecify the x and y coordinates, which are relative to the origin of the specified drawable and define the origin of the first character.

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 XDrawString16, 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. XDrawString and XDrawString16 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.

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