moz0810ex.txt

来自「mozilla developer book examples.」· 文本 代码 · 共 12 行

nsCOMPtr<nsILocalFile> refp = do_CreateInstance("@mozilla.org/file/local;1");
nsCOMPtr<nsILocalFile> anotherPtr = refp;
nsCOMPtr<nsILocalFile> oneMorePtr = refp;
nsresult rv;
if (!someCondition)
  return NS_OK;
. . .
//no need to release here because nsCOMPtr smart pointer's destructor
// will call release automatically and the above references will be
// properly decremented.
return NS_OK;