nx_x11_window.nx

nx_x11_window.nx -- bits-up X11 CreateWindow + MapWindow. Session 2 of the bits-up browser arc (Task #83). Composes the X11 connection from nx_x11_connect with the wire-protocol opcodes that put a window on screen. WSLg translates the X11 stream into a real native Windows surface. CreateWindow (opcode 1) layout (X Protocol §10 / xproto.xml): byte 0: opcode = 1 byte 1: depth (0 = CopyFromParent) bytes 2-3: request_length (4-byte units) bytes 4-7: window_id (allocated via nx_x11_alloc_id) bytes 8-11: parent (e.g. root_window) bytes 12-13: x (signed) bytes 14-15: y bytes 16-17: width bytes 18-19: height bytes 20-21: border_width bytes 22-23: class (1 = InputOutput, 2 = InputOnly) bytes 24-27: visual (0 = CopyFromParent) bytes 28-31: value_mask (optional) value_list (4 bytes per set bit in value_mask) value-mask bits we use (X protocol §6.7): CWBackPixel = 0x00000002 CWEventMask = 0x00000800 MapWindow (opcode 8): byte 0: opcode = 8 byte 1: unused bytes 2-3: request_length = 2 bytes 4-7: window_id API: nx_x11_create_window(conn, x, y, w, h, bg_pixel, event_mask) -> window_id (or 0 - NX_X11_*) nx_x11_map_window(conn, window_id) -> 0 | negative nx_x11_flush_via_get_input_focus(conn) -- forces server to actually process pending requests by sending a synchronous round-trip (GetInputFocus). Without