Как получить список всех published свойств (имена и типы) 2



Автор: Grega Loboda
WEB-сайт: http://www.lmc-mediaagentur.de

uses
TypInfo
procedure ListProperties(AInstance: TPersistent; AList: TStrings);
var
i: integer;
pInfo: PTypeInfo;
pType: PTypeData;
propList: PPropList;
propCnt: integer;
tmpStr: string;
begin
pInfo := AInstance.ClassInfo;
if (pInfo = nil) or (pInfo^.Kind <> tkClass) then
raise Exception.Create('Invalid type information');
pType := GetTypeData(pInfo); {Pointer to TTypeData}
AList.Add('Class name: ' + pInfo^.Name);
{If any properties, add them to the list}
propCnt := pType^.PropCount;
if propCnt > 0 then
begin
AList.Add(EmptyStr);
tmpStr := IntToStr(propCnt) + ' Propert';
if propCnt > 1 then
tmpStr := tmpStr + 'ies'
else
tmpStr := tmpStr + 'y';
AList.Add(tmpStr);
FillChar(tmpStr[1], Length(tmpStr), '-');
AList.Add(tmpStr);
{Get memory for the property list}
GetMem(propList, sizeOf(PPropInfo) * propCnt);
try
{Fill in the property list}
GetPropInfos(pInfo, propList);
{Fill in info for each property}
for i := 0 to propCnt - 1 do
AList.Add(propList[i].Name + ': ' + propList[i].PropType^.Name);
finally
FreeMem(propList, sizeOf(PPropInfo) * propCnt);
end;
end;
end;
function GetPropertyList(AControl: TPersistent; AProperty: string): PPropInfo;
var
i: integer;
props: PPropList;
typeData: PTypeData;
begin
Result := nil;
if (AControl = nil) or (AControl.ClassInfo = nil) then
Exit;
typeData := GetTypeData(AControl.ClassInfo);
if (typeData = nil) or (typeData^.PropCount = 0) then
Exit;
GetMem(props, typeData^.PropCount * SizeOf(Pointer));
try
GetPropInfos(AControl.ClassInfo, props);
for i := 0 to typeData^.PropCount - 1 do
begin
with Props^[i]^ do
if (Name = AProperty) then
result := Props^[i];
end;
finally
FreeMem(props);
end;
end;

And calling this code by:

ListProperties(TProject(treeview1.items[0].data), memo3.lines);

My tProject is defined as

type
TProject = class(tComponent)
private
FNaam: string;
procedure SetNaam(const Value: string);
public
constructor Create(AOwner: tComponent);
destructor Destroy;
published
property Naam: string read FNaam write SetNaam;
end;

Also note the output, there seem to be 2 standard properties (Name and Tag) !

Memo3
Class name: TProject

3 Properties
-------------------
Name: TComponentName
Tag: Integer
Naam: String


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