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gl_printf(3) Svgalib User Manual gl_printf(3) NAME gl_printf - write formatted output in graphic mode SYNOPSIS #include <vgagl.h> int gl_printf(int x, int y, const char *fmt, ...); DESCRIPTION gl_printf writes, like printf(3) a formatted string to position (x, y) us- ing the currently selected font. If one or both of x and y is negative, the text printing continues at the last position. The special characters \b, \r, \n, \a, \t and \v have the usual effects. Printing wraps at the screen borders. Nevertheless, behaviour is undefined if not a single characters fits on the screen or if the initial position is outside the screen. The kind of text draw operation is set with gl_setwritemode(3). BEWARE! Prior to the of use of gl_printf(3) you must set a font. A good default initialization sequence is: gl_setfont(8, 8, gl_font8x8); gl_setwritemode(FONT_COMPRESSED + WRITEMODE_OVERWRITE); gl_setfontcolors(0, vga_white()); RETURN VALUE The number of characters printed. BUGS For compatibility reasons this function is not contained in a.out li- braries. SEE ALSO printf(3), svgalib(7), vgagl(7), gl_colorfont(3), gl_expandfont(3), gl_font8x8(3), gl_setfont(3), gl_setfontcolors(3), gl_setwritemode(3), gl_write(3), gl_writechar(3), printftest(6). AUTHOR This function and manual page was written by Trek <trek00@freenet.hut.fi> <trek@mediaservice.net>. Svgalib 1.3.0 22 Feb 1997 gl_printf(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | BUGS | SEE ALSO | AUTHOR
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