// raden som du lägger till i uses
registry;

function GetWindowsVersion: string ;
var
VerInfo: TOsversionInfo;
PlatformId, VersionNumber: string ;
Reg: TRegistry;
begin
VerInfo.dwOSVersionInfoSize := SizeOf(VerInfo);
GetVersionEx(VerInfo);
// Detect platform
Reg := TRegistry.Create;
Reg.RootKey := HKEY_LOCAL_MACHINE;
case VerInfo.dwPlatformId of
VER_PLATFORM_WIN32s:
begin
// Registry (Huh? What registry?)
PlatformId := 'Windows 3.1';
end;
VER_PLATFORM_WIN32_WINDOWS:
begin
// Registry
Reg.OpenKey('\SOFTWARE\Microsoft\Windows\CurrentVersion', False);
PlatformId := Reg.ReadString('ProductName');
VersionNumber := Reg.ReadString('VersionNumber');
end;
VER_PLATFORM_WIN32_NT:
begin
// Registry
Reg.OpenKey('\SOFTWARE\Microsoft\Windows NT\CurrentVersion', False);
PlatformId := Reg.ReadString('ProductName');
VersionNumber := Reg.ReadString('CurrentVersion');
end;
end;
Reg.Free;
Result := PlatformId + ' (version ' + VersionNumber + ')';
end;


//koden som du lägger in i knappen
Label1.Caption := GetWindowsVersion;