nim::QChatAttachmentDownloadParam 成员列表

成员的完整列表，这些成员属于 nim::QChatAttachmentDownloadParam,包括所有继承而来的类成员

cb	nim::QChatAttachmentDownloadParam
file_path	nim::QChatAttachmentDownloadParam
progress_cb	nim::QChatAttachmentDownloadParam
res_type	nim::QChatAttachmentDownloadParam
task_id	nim::QChatAttachmentDownloadParam
ToCParam() const	nim::QChatAttachmentDownloadParam	inline
url	nim::QChatAttachmentDownloadParam