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7 1997. [ ]. J. ( ). [5]. J. 1998 (3) 167-173. [6]. J. ( ) 1993 33(4) 62-67. [ ]. P.. [8]. P. 881056073 1989-07-26. [ ]. /. / ( ). [7]. XML EB/OL. http://www-900.ibm.com/ developerworks/cn/xml/ xmlb2b/index5.shtml, 2001-06/2001-10-04. 1 M C N J D R S P Z 2 DB CP EB 3 MT DK CD OL DB/OL DB/MT M/CD CP/DK J/OL EB/OL XML [1] CAST [2],[4] 12. Times New Roman - 7 -
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Times New Roman 2 12 12 The Researches on the scheme of Event-driven Distributed System Times New Roman 4 ABSTRACT Times New Roman 3 12 12 With the rapid development of the computer hardware and the network technique, the application of the distributed system has become a new trend. It can complete such a job by means of using the connected computer that cannot be done by a single computer. Since it can largely improve the work efficiency, the distributed system application has been paid much attention. It is used gradually in wider and wider area. Many software companies issue their products called mid-ware in succession, which can make the development of the distributed system simpler. In this paper, the basic concept of the distributed system will be covered. It will also discuss the distributed system in foundation, classifications, structure, characteristics, advantages and shortage. The distributed system is a kind of software systems. Although network is its foundation, the distributed system is characterized by its transparency. This character distinguishes the distributed system from the ordinary use of the network. There are some discussions in this paper. In the following, a scheme of an event-driven distributed system will be issued. This model is issued by means of modularization and each block cooperates with each other in order to improve the work efficiency. A distributed application system can be quickly realized by utilizing such a kind of model. In the end, a simple distributed model will be constructed in order to show this working frame and further discussions. Key words: distributed system; event-driven; network; socket Times New Roman 4 III
4 4 4 212 12 I ABSTRACT II 1 1 1.1 1 1.2 2 1.2.1 2 1.2.2 3 1.3 4 2 5 2.1 5 2.2 6 2.3 7 3 8 3.1 8 3.2 13 3.3 16 4 19 4.1 19 4.2 21 4.2.1 21 4.2.2 22 5 25 26 27 28 A: 28 B: 32 C: 36 D: 40 E: 44 F: / 45 IV
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5 [1]. J. 1998,20(6): 343~346 [2]. C M. 1999.11 [3] Shihang S. Fuzzy self-organizing controller and its application for dynamic processes[j]. Fuzzy Sets and Systems, 1998,26:151~164 [4] Kaare Christian. Borland C++ Techniques & Utilitis[M]. Ziff-DavisPress 1993 Times New Roman 5 2
3 A: Subject Times New Roman 4 From Shihang S. Fuzzy self-organizing controller and its application for dynamic processes[j]. Fuzzy Sets and Systems, 1998,26:151~164 The text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text. The text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text. Times New Roman 5 3
B: 4 5 Shihang S. Fuzzy self-organizing controller and its application for dynamic processes[j]. Fuzzy Sets and Systems, 1998,26:151~164 4
C: 1.1 1 2 3 s(t) 1.1 5
D: 4 5 //-------------------------------------------------------------------------- Courier New 5 // Keyboard hook Hook //-------------------------------------------------------------------------- #include <vcl.h> #pragma hdrstop #include "Unit1.h" //-------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TKeyHookForm *KeyHookForm; //-------------------------------------------------------------------------- fastcall TKeyHookForm::TKeyHookForm(TComponent* Owner):TForm(Owner) {inthook = 0; // FormStyle = fsstayontop; // KeyHookForm Button1->Enabled = true; // Hook Button2->Enabled = false; } //-------------------------------------------------------------------------- // Hook void fastcall TKeyHookForm::Button1Click(TObject *Sender) {inthook = 0; // // keydll.dll SetHook Hook void (*SetHook)(); // SetHook inst = LoadLibrary("keydll.dll")// --keydll.dll; (FARPROC &)SetHook = ::GetProcAddress(inst,"SetHook"); // dll SetHook SetHook(); // dll SetHook ; Button1->Enabled = false; // Hook Button2->Enabled = true; } //-------------------------------------------------------------------------- // Hook hook void fastcall TKeyHookForm::Button2Click(TObject *Sender) {// keydll.dll RemoveHook Hook void (*RemoveHook)(); // RemoveHook inst = LoadLibrary("keydll.dll");// --keydll.dll (FARPROC &)RemoveHook = GetProcAddress(inst,"RemoveHook"); // dll RemoveHook RemoveHook(); // dll RemoveHook FreeLibrary(inst); // dll Button1->Enabled = true; // Hook Button2->Enabled = false; } //-------------------------------------------------------------------------- // void fastcall TKeyHookForm::KeyHook(TMessage &Msg) {// char keytext[80]; GetKeyNameText(Msg.LParam, keytext, 80); AnsiString keystate; // (.....) keystate = GetKeyState((int)Msg.WParam); keystate = (keystate == "1")?" ":" ";//C++ ListBox1->Items->Insert(0," "+AnsiString(++inthook) + " " + AnsiString(keytext) + " >>" + keystate); // ListBox } //-------------------------------------------------------------------------- 6
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