After trying to use xcb_poly_text_8, I seem to be facing a similar problem as is described here: <a href="http://lists.freedesktop.org/archives/xcb/2007-January/002533.html" target="_blank">http://lists.freedesktop.org/archives/xcb/2007-January/002533.html</a> I define a structure: struct { char *chars; int nchars; int delta; xcb_font_t font; } item; item.chars = "Test"; item.nchars = 4; item.delta = 0; item.font = 0; and I call xcb_poly_text_8_checked: cookie_text = xcb_poly_text_8_checked(c, w, gc, 16, 16, 1, (const uint8_t*)&item); error = xcb_request_check(c, cookie_text); printf("%d\n", (*error).error_code); xcb_flush(c); and get the output 16, which in X11/X.h is defined as BadLength. Are there any examples at all of a working implementation of this function? <div class="gmail_quote">On Sun, Jan 2, 2011 at 3:40 AM, Aaron Plattner <<a href="mailto:aplattner@nvidia.com">aplattner@nvidia.com</a>> wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <div class="im">On Sat, Jan 01, 2011 at 07:35:30PM -0800, Cinolt wrote: > Hello, the xcb_image_text_8 function seems to fill the area of the text > with the background color, and in my case it is black if not specified. > Is there any way to prevent it from filling in a background color, and > only draw the text? Here is a minimal example illustrating my problem, as > this only displays a black box when I want to draw black text. Setting > XCB_GC_FUNCTION to XCB_GX_CLEAR seems to have no effect. </div>I don't think ImageText8 is what you want, then (emphasis mine): ImageText8 drawable: DRAWABLE gc: GCONTEXT x, y: INT16 string: STRING8 Errors: Drawable, GContext, Match The x and y coordinates are relative to drawable's origin, and specify the baseline starting position (the initial ====> character origin). The effect is to first fill a ====> destination rectangle with the background pixel defined in ====> gc, and then paint the text with the foreground pixel. The upper left corner of the filled rectangle is at [x + overall-left, y - font-ascent] the width is overall-right - overall-left and the height is font-ascent + font-descent where overall-left, overall-right, font-ascent, and as font-descent are would be returned by a QueryTextExtents call using gc and string. ====> The alu-function and fill-style defined in gc are ignored for ====> this request; the effective alu-function is Copy and the ====> effective fill-style Solid. For fonts defined with two-byte matrix indexing, each STRING8 byte is interpreted as a byte2 value of a CHAR2B with a byte1 value of zero. GC components: plane-mask, foreground, background, font, subwindow-mode, clip-x-origin, clip-y-origin, clip-mask I think what you want is PolyText8. -- Aaron </blockquote></div>