搭建PVB架构，实现前端的基础布局、菜单、表格、图示等功能

2026-05-27 18:59:26 +08:00 · 2025-08-20 19:00:22 +08:00
parent 5de7687bcc
commit 7e965b6fb4
142 changed files with 28270 additions and 411 deletions
--- a/libs/pvb/include/rllib/rlmailbox.h
+++ b/libs/pvb/include/rllib/rlmailbox.h
@@ -0,0 +1,127 @@
+/***************************************************************************
+                          rlmailbox.h  -  description
+                             -------------------
+    begin                : Tue Jan 02 2001
+    copyright            : (C) 2001 by R. Lehrig
+    email                : lehrig@t-online.de
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE as        *
+ *   published by the Free Software Foundation                             *
+ *                                                                         *
+ ***************************************************************************/
+#ifndef _RL_MAILBOX_H_
+#define _RL_MAILBOX_H_
+
+#include "rldefine.h"
+
+/*! <pre>
+class for a mailbox.
+
+A mailbox is for communication between processes on the same computer.
+It works like a fifo.
+Many processes can write to 1 mailbox.
+Only 1 reader is allowed.
+</pre> */
+class rlMailbox
+{
+public:
+  enum MailboxEnum
+  {
+    /// return codes for write()
+    MAILBOX_ERROR            = -1,
+    MAILBOX_FULL             = -2,
+    /// wait parameter for read()
+    WAIT                     = 1,
+    NOWAIT                   = 0,
+    /// maximum mailbox length
+    MAX_MAILBOX              = 256*256,
+    /// status:
+    OK                       = 2,
+    COULD_NOT_CREATE_MAILBOX = 3,
+    COULD_NOT_GET_KEY        = 4,
+    COULD_NOT_GET_CHAN_ID    = 5
+  };
+
+  /*! <pre>
+  construct a named mailbox
+  </pre> */
+  rlMailbox(const char *name);
+
+  /*! <pre>
+  destruct the mailbox
+  </pre> */
+  virtual ~rlMailbox();
+
+  /*! <pre>
+  write buf with length len to mailbox
+  return: bytes written
+          MAILBOX_ERROR
+          MAILBOX_FULL
+  </pre> */
+  int write(const void *buf, int len);
+
+  /*! <pre>
+  similar to printf
+  return: bytes written
+          MAILBOX_ERROR
+          MAILBOX_FULL
+  </pre> */
+  int printf(const char *format, ...);
+
+  /*! <pre>
+  read buf from mailbox, maxlen=Maximal length of buf
+  return: number of bytes read
+  wait = 0 no wait
+  wait = 1 wait for message
+  </pre> */
+  int read(void *buf, int maxlen, int wait=WAIT);
+
+  /*! <pre>
+  set the size of buffer for "const char *read(int wait)"
+  </pre> */
+  int setReadBufferSize(int size);
+
+  /*! <pre>
+  read buffer from mailbox
+  return: buffer | ""
+  wait = 0 no wait
+  wait = 1 wait for message
+  </pre> */
+  const char *read(int wait=WAIT);
+
+  /*! <pre>
+  write message to mailbox
+  return: bytes written
+          MAILBOX_ERROR
+          MAILBOX_FULL
+  </pre> */
+  int write(const char *message);
+
+  /*! <pre>
+  read all messages from mailbox, clear them
+  </pre> */
+  void clear();
+
+  /*! <pre>
+  should be: OK
+  can be:    COULD_NOT_CREATE_MAILBOX
+             COULD_NOT_GET_CHAN_ID
+  </pre> */
+  int status;
+
+  /*! <pre>
+  Name of mailbox
+  </pre> */
+  char *name;
+
+private:
+  int chanid;
+  int buffer_size;
+  char *buffer;
+};
+
+#endif