void NGBPoint(INT16 x, INT16 y)
{
xcb_point_t points[] =
{
{ x, y } };
xcb_poly_point(con, XCB_COORD_MODE_ORIGIN, win, foreground, 1, points);
}
int main() {
xcb_connection_t * conn;
xcb_screen_t * scrn;
xcb_drawable_t win;
xcb_gcontext_t foreground;
xcb_generic_event_t * e;
uint32_t mask = 0;
uint32_t values[2];
xcb_point_t points[] = { { 10, 10 },
{ 10, 20 },
{ 20, 10 },
{ 20, 20 } };
xcb_point_t polyline[] = { { 50, 10 },
{ 5, 20 },
{ 25,-20 },
{ 10, 10 } };
xcb_segment_t segments[] = { { 100, 10, 140, 30 },
{ 110, 25, 130, 60 } };
xcb_rectangle_t rectangles[] = { { 10, 50, 40, 30 },
{ 80, 50, 10, 40 } };
xcb_arc_t arcs[] = { { 10, 100, 60, 40, 0, 90 << 6 },
{ 90, 100, 55, 40, 0, 270 << 6 } };
//initialize the connection to X
conn = xcb_connect(NULL, &scrnNum);
//get the first screen data
scrn = get_setup_roots_iterator(xcb_get_setup(conn)).data;
foreground = xcb_generate_id(conn);
mask = XCB_GC_FOREGROUND | XCB_GC_GRAPHICS_EXPOSURES;
values[0] = scrn->black_pixel;
values[1] = 0;
xcb_create_gc(conn, foreground, win, mask, values);
//ask for the window's id
win = xcb_generate_id(conn);
//create the window
mask = XCB_CW_BLACK_PIXEL | XCB_GC_GRAPHICS_EXPOSURES
values[0] = scrn->white_pixel;
values[1] = XCB_EVENT_MASK_EXPOSURE;
xcb_create_window(conn,
XCB_COPY_FROM_PARENT,
win,
scrn->root,
0, 0,
150, 150,
10,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
scrn->root_visual,
mask, values);
//map the window
xcb_map_window(conn, win);
xcb_flush(conn);
while (( e = xcb_wait_for_event(conn)) {
switch (e->response_type & ~0x80) {
case XCB_EXPOSE: {
//draw things
xcb_poly_point(conn, XCB_COORD_MODE_ORIGIN, win, foreground, 4, points);
xcb_poly_line(conn, XCB_COORD_MODE_PREVIOUS, win, foreground, 4, polyline);
xcb_poly_segment(conn, win, foreground, 2, segments);
xcb_poly_rectangle(conn, win, foreground, 2 , rectangles);
xcb_poly_arc(conn, win, foreground, 2, arcs);
xcb_flush(conn);
break;
}
default: {
break;
}
}
free(e);
}
return 0;
}