C#中如何实现先选择的pickfirst选择集按下ESC键清除选择集并且触发对Combobox

wjklxywjy

C#中如何实现先选择的pickfirst选择集按下ESC键清除选择集并且触发对Combobox控制内容列表清空，如下图所示：

雪山飞狐_lzh

在Pycad里试了下，下面的代码是可行的

1. _esc = False
   
2. _num = 0
   
3. 
   
4. def pickfirst_added(ed, e):
   
5.     if e.Flags == aced.SelectionFlags.PickfirstSet:
   
6.         global _esc, _num
   
7.         if _esc:
   
8.             _esc = False
   
9.             _num -= (e.Selection.Count + e.AddedObjects.Count)
   
10.         else:
    
11.             _num = e.Selection.Count + e.AddedObjects.Count
    
12.         ed.WriteMessage("\n%s" % _num)
    
13. 
    
14. def pickfirst_removed(ed, e):
    
15.     if e.Flags == aced.SelectionFlags.PickfirstSet:
    
16.         global _num
    
17.         _num = e.Selection.Count - e.RemovedObjects.Count
    
18.         ed.WriteMessage("\n%s" % _num)
    
19. 
    
20. def on_message(sender, e):
    
21.     m = e.Message
    
22.     if (m.message == 0x0100) and (int(m.wParam) & 65535 == 27):
    
23.         global _esc
    
24.         _esc = True
    
25. 
    
26. @command()
    
27. def showpickfirstinfo(doc):
    
28.     ed = doc.Editor  #type: aced.Editor
    
29.     ed.SelectionAdded += pickfirst_added
    
30.     ed.SelectionRemoved += pickfirst_removed
    
31.     acap.Core.Application.PreTranslateMessage += on_message
    
32. 
    
33. @command()
    
34. def unshowpickfirstinfo(doc):
    
35.     ed = doc.Editor  #type: aced.Editor
    
36.     ed.SelectionAdded -= pickfirst_added
    
37.     ed.SelectionRemoved -= pickfirst_removed
    
38.     acap.Core.Application.PreTranslateMessage -= on_message

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雪山飞狐_lzh

好吧 感觉我想多了。。。ImpliedSelectionChanged事件就可以 奇怪我昨天这样写怎么总不行？

1. def pickfirst_changed(sender, e):
   
2.     #事件的触发者即当前文档
   
3.     ed = sender.Editor  #type: aced.Editor
   
4.     #获取PickFirst选择集
   
5.     res = ed.SelectImplied()
   
6.     if res.Status == aced.PromptStatus.OK:
   
7.         ed.WriteMessage(str(res.Value.Count))
   
8.     else:
   
9.         ed.WriteMessage("0")
   
10. 
    
11. def doc_created(sender, e):
    
12.     #新文档创建后,绑定ImpliedSelectionChanged事件
    
13.     e.Document.ImpliedSelectionChanged += pickfirst_changed
    
14. 
    
15. @command()
    
16. def showpickfirstinfo(doc):
    
17.     #获取文档集合
    
18.     docs = acap.Application.DocumentManager
    
19.     #绑定DocumentCreated事件
    
20.     docs.DocumentCreated += doc_created
    
21.     for d in docs:
    
22.         #遍历已有文档,绑定ImpliedSelectionChanged事件
    
23.         d.ImpliedSelectionChanged += pickfirst_changed
    
24. 
    
25. @command()
    
26. def unshowpickfirstinfo(doc):
    
27.     docs = acap.Application.DocumentManager
    
28.     docs.DocumentCreated -= doc_created
    
29.     for d in docs:
    
30.         d.ImpliedSelectionChanged -= pickfirst_changed

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wjklxywjy

用C#来写，这个不太明白

雪山飞狐_lzh

简单注释了一下。。。话说我觉得pycad的代码和C#相差不大