检查驱动器是否就绪:
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作者：佚名
来源：InterNet 加入时间：2004-11-22 |
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检查驱动器是否就绪:
下面这个函数可以显示是否就绪。(From Borland)
function DiskInDrive(Drive: Char): Boolean;
var ErrorMode: word;
begin
{ make it upper case }
if Drive in ['a'..'z'] then Dec(Drive, $20);
{ make sure it's a letter }
if not (Drive in ['A'..'Z']) then
raise EConvertError.Create('Not a valid drive ID');
{ turn off critical errors }
ErrorMode := SetErrorMode(SEM_FailCriticalErrors);
try
{ drive 1 = a, 2 = b, 3 = c, etc. }
if DiskSize(Ord(Drive) - $40) = -1 then
Result := False
else
Result := True;
finally
{ restore old error mode }
SetErrorMode(ErrorMode);
end;
end;
[文章录入员:fightter] |
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