Вы можете сделать что-то вроде
procedure ListRegisteredBrowsers(List: TStrings);
var
reg: TRegistry;
ki: TRegKeyInfo;
i: Integer;
keyname: string;
len: DWORD;
begin
reg := TRegistry.Create;
try
reg.RootKey := HKEY_LOCAL_MACHINE;
if not Reg.KeyExists('\SOFTWARE\Clients\StartMenuInternet') then Exit;
if not Reg.OpenKey('\SOFTWARE\Clients\StartMenuInternet', false) then
raise Exception.Create('ListRegisteredBrowsers: Could not open registry key.');
if not reg.GetKeyInfo(ki) then
raise Exception.Create('ListRegisteredBrowsers: Could not obtain registry key information.');
List.Clear;
SetLength(keyname, len);
for i := 0 to ki.NumSubKeys - 1 do
begin
len := ki.MaxSubKeyLen + 1;
if RegEnumKeyEx(reg.CurrentKey, i, PChar(keyname), len, nil, nil, nil, nil) <> ERROR_SUCCESS then
RaiseLastOSError;
if reg.OpenKey('\SOFTWARE\Clients\StartMenuInternet\' + keyname, false) then
List.Add(reg.ReadString(''));
Reg.OpenKey('\SOFTWARE\Clients\StartMenuInternet', true);
end;
finally
reg.Free;
end;
end;
и
function GetDefaultBrowser: string;
var
reg: TRegistry;
begin
result := '';
reg := TRegistry.Create;
try
reg.RootKey := HKEY_CURRENT_USER;
if Reg.OpenKey('\SOFTWARE\Clients\StartMenuInternet', false) then
result := reg.ReadString('')
else
begin
reg.RootKey := HKEY_LOCAL_MACHINE;
if Reg.OpenKey('\SOFTWARE\Clients\StartMenuInternet', false) then
result := reg.ReadString('')
end;
reg.RootKey := HKEY_LOCAL_MACHINE;
if Reg.OpenKey('\SOFTWARE\Clients\StartMenuInternet\' + result, false) then
result := reg.ReadString('');
finally
reg.Free;
end;
end;
Проверьте это:
procedure TForm1.Button1Click(Sender: TObject);
var
sl: TStringList;
i: Integer;
DefBrw: string;
begin
DefBrw := GetDefaultBrowser;
sl := TStringList.Create;
try
ListRegisteredBrowsers(sl);
Memo1.Lines.BeginUpdate;
for i := 0 to sl.Count - 1 do
if SameText(sl[i], DefBrw) then
Memo1.Lines.Add(sl[i] + ' (Default)')
else
Memo1.Lines.Add(sl[i]);
Memo1.Lines.EndUpdate;
finally
sl.Free;
end;
end;