Mega Code Archive
How to get a list of all registered typelibs
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Title: How to get a list of all registered typelibs
uses
Registry;
procedure EnumTypeLibs(TypeLibNames: TStrings);
var
f: TRegistry;
keyNames, keyVersions, keyInfos: TStringList;
keyName, keyVersion, keyInfo, tlName: string;
i, j, k: Integer;
begin
TypeLibNames.Clear;
keyNames := nil;
keyVersions := nil;
keyInfos := nil;
f := TRegistry.Create;
try
keyNames := TStringList.Create;
keyVersions := TStringList.Create;
keyInfos := TStringList.Create;
f.RootKey := HKEY_CLASSES_ROOT;
if not f.OpenKey('TypeLib', False) then raise
Exception.Create('TRegistry.Open');
f.GetKeyNames(keyNames);
f.CloseKey;
for i := 0 to keyNames.Count - 1 do
begin
keyName := keyNames.Strings[i];
if not f.OpenKey(Format('TypeLib\%s', [keyName]), False) then Continue;
f.GetKeyNames(keyVersions);
f.CloseKey;
for j := 0 to keyVersions.Count - 1 do
begin
keyVersion := keyVersions.Strings[j];
if not f.OpenKey(Format('TypeLib\%s\%s', [keyName, keyVersion]), False) then
Continue;
tlName := f.ReadString('');
f.GetKeyNames(keyInfos);
f.CloseKey;
{$B-}
for k := 0 to keyInfos.Count - 1 do
begin
keyInfo := keyInfos.Strings[k];
if (keyInfo = '') or (keyInfo[1] '0') or (keyInfo[1] '9') then Continue;
if not f.OpenKey(Format('TypeLib\%s\%s\%s\win32', [keyName, keyVersion,
keyInfo]), False) then Continue;
f.CloseKey;
TypeLibNames.Add(Format('%s ver.%s', [tlName, keyVersion]));
end;
{$B+}
end;
end;
finally
f.Free;
keyNames.Free;
keyVersions.Free;
keyInfos.Free;
end;
end;
// Example Call:
procedure TForm1.Button1Click(Sender: TObject);
begin
EnumTypeLibs(ListBox1.Items);
end;
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