TTypeInfo* AnsiStringTypeInfo(void) { TTypeInfo* TypeInfo = new TTypeInfo; TypeInfo->Name = "AnsiString"; TypeInfo->Kind = tkLString; return TypeInfo; namespace Dbtreeview { void __fastcall PACKAGE Register() { RegisterPropertyEditor(AnsiStringTypeInfo(), __classid(TDBTreeView), "DisplayField", __classid(TFieldNameProperty));//註冊屬性 TComponentClass classes[1] = {__classid(TDBTreeView)}; RegisterComponents("Data Controls", classes, 0);//註冊組件 } } 煩請各位大大: 為什麼上面的”DisplayField”屬性編輯器一直無法註冊使用呢. 這是錯誤訊息 Build [Linker Error] Unresolved external 'Dbreg::TListFieldProperty::' referenced from C:\PROGRAM FILES\BORLAND\CBUILDER6\PROJECTS\UNIT1.OBJ [Linker Error] Unresolved external '__fastcall Designintf::RegisterPropertyEditor(Typinfo::TTypeInfo *, System::TMetaClass *, const System::AnsiString, System::TMetaClass *)' referenced from C:\PROGRAM FILES\BORLAND\CBUILDER6\PROJECTS\UNIT1.OBJ 謝謝