[cairo] unable to render text

[Mehmet Kovacioglu]

thanks for the quick reply,
here's the code:

#include <cairo.h>
#include <math.h>
#include <stdio.h>

int
main (int argc, char *argv[])
{
    cairo_surface_t *surface;
    cairo_t *cr;
    cairo_text_extents_t te;

    /* Prepare drawing area */
    //surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 240, 240);
    //cr = cairo_create (surface);
    surface = cairo_image_surface_create_from_png("someimage.png");
    cr = cairo_create (surface);
    /* Examples are in 1.0 x 1.0 coordinate space */

    cairo_set_line_width(cr, 5);

    /* Drawing code goes here */
    cairo_set_source_rgb (cr, 0.6, 0.9, 1.0);
    cairo_rectangle(cr, 25, 25, 100, 100);
    cairo_fill(cr);


    cairo_set_source_rgb (cr, 0.0, 0.0, 0.0 );
    cairo_arc(cr, 75, 75, 50, 0, 2*M_PI);
    cairo_stroke(cr);

    cairo_move_to(cr, 50, 75);
    cairo_line_to(cr, 100, 75);
    cairo_stroke(cr);

    cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
    cairo_move_to(cr, 70, 75);
    cairo_line_to(cr, 80, 75);
    cairo_stroke(cr);

------------------
    up till here everything works fine
 ------------------

    cairo_set_source_rgb (cr, 1.0, 0.0, 0.0);
    cairo_select_font_face (cr, "sansserif",
                CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
    cairo_set_font_size (cr, 22);
    cairo_text_extents (cr, "ABC", &te);
    cairo_show_text (cr, "ABC");

--------------------
the part above isnt shown in the resulting png file
--------------------

    /* Write output and clean up */
    cairo_surface_write_to_png (surface, "showtext.png");
    cairo_destroy (cr);
    cairo_surface_destroy (surface);

    return 0;
}
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