initialization.data btab type table of sy-ucomm.append'ONLI' to btab.call function 'RS_SET_SELSCREEN_STATUS'exportingp_status = sy-pfkeytablesp_exclude = btab.
2.添加按钮(Tool Bar)
tables: sscrfields.selection-screen begin of line.selection-screen function key 1.selection-screen function key 2.selection-screen end of line.initialization.sscrfields-functxt_01 = icon_execute_object.sscrfields-functxt_02 = icon_graphics.
3. 添加按钮（Screen）
selection-screen:
begin of line,pushbutton 2(10) but01 user-command cli1,end of line.
完整代码（可执行）
tables: sscrfields.selection-screen begin of line.selection-screen comment 1(5) text-001for field p1. "starting from 12parameters : p1 type matnr. " this will take 10selection-screen comment 50(10) lv_icon. "starting from 12selection-screen function key 1.selection-screen function key 2.selection-screen end of line.selection-screen skip 1.selection-screen:
begin of line,pushbutton 2(10) but01 user-command cli1,end of line.initialization.sscrfields-functxt_01 = icon_execute_object.sscrfields-functxt_02 = icon_graphics.data btab type table of sy-ucomm.append'ONLI' to btab.call function 'RS_SET_SELSCREEN_STATUS'exportingp_status = sy-pfkeytablesp_exclude = btab.if lv_icon =''.lv_icon = icon_led_yellow.endif.but01 ='测试按钮'.at selection-screen.if sy-ucomm ='FC01'.lv_icon = icon_led_green.elseif sy-ucomm ='FC02'.lv_icon = icon_led_red.elseif sy-ucomm ='CLI1'.lv_icon = icon_message_warning.endif.
Unity_ET-TimerComponent
源码：
namespace ETModel
{public struct Timer{public long Id { get; set; }public long Time { get; set; }public TaskCompletionSource<bool> tcs;}[ObjectSystem]public class TimerComponentUpdateSystem : UpdateSystem<…
