Miscellany
public text v1 · immutable xcb_generic_error_t* error;
xcb_get_image_reply_t* ir = xcb_get_image_reply(gui.conn, xcb_get_image(gui.conn, XCB_IMAGE_FORMAT_Z_PIXMAP, this.id, x, y, w, h, 0), &error);
if(error != null)writefln("failure");
ubyte* d = xcb_get_image_data(ir);
if(d == null)writefln("failure");
writefln(d[4]);
free(ir);
//free(d);