Title: How to check if the Internet Explorer is installed
uses
registry;
function IE_installed(var Version: string): Boolean;
var
Reg: TRegistry;
begin
Reg := TRegistry.Create;
with Reg do
begin
RootKey := HKEY_LOCAL_MACHINE;
OpenKey('Software\Microsoft\Internet Explorer', False);
if ValueExists('Version') then
Version := ReadString('Version')
else
Version := '';
CloseKey;
Free;
end;
Result := Version '';
end;
procedure TForm1.Button1Click(Sender: TObject);
var
IE_Version: string;
begin
if IE_Installed(IE_Version) then
ShowMessage(Format('Internet Explorer %s installed.', [IE_Version]));
end;