Lister les applications installées sur le PC

uses
Registry;

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
aList: TStrings;
i: Integer;
sVersion: string;
const
sUninstall = 'SoftwareMicrosoftWindowsCurrentVersionUnInstall';
begin
// enumerate installed applications
aList := TStringList.Create;

with TRegistry.Create do
begin
RootKey := HKEY_LOCAL_MACHINE;
if OpenKey(sUninstall, False) then
begin
GetKeyNames(aList);
CloseKey;

for i := 0 to aList.Count - 1 do
begin
if OpenKey(sUninstall +
'' +
aList[i], False) then
begin
// collect some info about the installed stuff
if ValueExists('DisplayVersion') then
sVersion := 'Version ' + ReadString('DisplayVersion')
else
sVersion := '';

ListBox1.Items.Add(aList[i] + #9 + sVersion);
CloseKey
end;
end;
end;
// free the registry object
Free
end;
aList.Free
end;