获取第一个光驱盘符
{
***************************************
Get the First CD ROM
***************************************
}
function GetCDROM():string;
var
str:string;
Drivers:Integer;
driver:char;
i,temp:integer;
begin
Drivers:=GetLogicalDrives;
temp:=(1 and Drivers);
for i:=0 to 26 do
begin
if temp=1 then
begin
driver:=char(i+integer('a'));
