代码;

#include<cairo.h>
int main()
{
	cairo_surface_t *surface;
	cairo_t *cr;
	surface=cairo_image_surface_create(CAIRO_FORMAT_ARGB32,320,240);
	cr=cairo_create(surface);
	cairo_set_source_rgb(cr,0,1,0);
	cairo_rectangle(cr,10,10,200,200);
	cairo_fill(cr);
	cairo_move_to(cr,250,200);
	cairo_select_font_face(cr,"DongWen--Song",CAIRO_FONT_SLANT_NORMAL,CAIRO_FONT_WEIGHT_NORMAL);
	cairo_set_font_size(cr,60);
	cairo_show_text(cr,"hello world");
	cairo_surface_write_to_png(surface,"image.png");
	cairo_destroy(cr);
	cairo_surface_destroy(surface);
	return 0;
}

运行生成png图片