//用open来打开该文件,如果出错,表示文件打开。否则没有打开以可写方法打开,楼主说的是这个吗?function IsFileInUse(fName : string) : boolean; var HFileRes : HFILE; begin Result := false; if not FileExists(fName) then exit; HFileRes := CreateFile(pchar(fName), GENERIC_READ or GENERIC_WRITE, 0 {this is the trick!}, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); Result := (HFileRes = INVALID_HANDLE_VALUE); if not Result then CloseHandle(HFileRes); end;
var
HFileRes : HFILE;
begin
Result := false;
if not FileExists(fName) then
exit;
HFileRes := CreateFile(pchar(fName), GENERIC_READ or GENERIC_WRITE,
0 {this is the trick!}, nil, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
Result := (HFileRes = INVALID_HANDLE_VALUE);
if not Result then
CloseHandle(HFileRes);
end;