从内存中卸载DLL

remove a Dll from memory?
function KillDll(aDllName: string): Boolean;
var
hDLL: THandle;
aName: array[0..10] of char;
FoundDLL: Boolean;
begin
StrPCopy(aName, aDllName);
FoundDLL := False;
repeat
hDLL := GetModuleHandle(aName);
if hDLL = 0 then
Break;
FoundDLL := True;
FreeLibrary(hDLL);
until False;
if FoundDLL then
MessageDlg('Success!', mtInformation, [mbOK], 0)
else
MessageDlg('DLL not found!', mtInformation, [mbOK], 0);
end;