[cairo] can't render text

[Techie Help]

Hi,
I am new to Cairo and read the documentation on the website.
Just trying out some examples.
I can render lines, rectangles, basically shapes but not text.

I am using following code:

Please let me know, what I am doing wrong.
<code>
cairo_select_font_face (cr, "monospace", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAl);

    cairo_set_font_size (cr, 14);

    cairo_set_source_rgb (cr, 0, 0, 0);

    cairo_move_to (cr, 0, 50);

    cairo_show_text (cr, "Print Something");
</code>
TIA,
tt
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