Rtti访问私有变量小记
对rtti访问私有变量的一个demo
直接上代码！
1 unit Unit1;
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3
4
5 interface
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7
8
9 uses
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11 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
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13 Dialogs, Rtti, StdCtrls;
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15
16
17 type
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19 TForm1 = class(TForm)
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21 Btn1: TButton;
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23 Edit1: TEdit;
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25 procedure Btn1Click(Sender: TObject);
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27 private
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29 { Private declarations }
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31 FList: TList;
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33 public
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35 { Public declarations }
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37 end;
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39
40
41 var
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43 Form1: TForm1;
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45
46
47 implementation
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49
50
51 {$R *.dfm}
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53
54
55 procedure TForm1.Btn1Click(Sender: TObject);
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57 var
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59 rttiContext : TRttiContext;
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61 rtype : TRttiType;
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63 rField : TRttiField;
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65 rV: TValue;
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67 SName: string;
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69 I: Integer;
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71 vCom: TComponent;
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73 begin
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75 FList := TList.Create;
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77 rttiContext := TRttiContext.Create;
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79 rtype := rttiContext.GetType(TForm1);
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81 rField := rType.GetField('FComponents');
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83 if rField <> nil then
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85 begin
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87 rV := rField.GetValue(Self);
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89 if rV.IsType<TList> then
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91 begin
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93 FList.Add(TValuedata(rV).FAsPointer);
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95 end;
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97 end;
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99 for I := 0 to TList(FList[0]).Count - 1 do
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101 begin
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103 vCom := TList(FList[0])[i];
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105 SName := SName + vCom.Name + ';';
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107 end;
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109 ShowMessage(Format('FListCount:%d FList[1].Count:%d CompName:%s',[FList.Count,TList(FList[0]).Count,SName]));
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111 FreeAndNil(FList);
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113 rttiContext.Free;
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115 end;
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117
118
119 end.
