您好,欢迎光临本网站![请登录][注册会员]  
文件名称: 界面技术-对话框的内容滚动显示.doc
  所属分类: 其它
  开发工具:
  文件大小: 56kb
  下载次数: 0
  上传时间: 2009-08-27
  提 供 者: son***
 详细说明: Selecting the "Horizontal Scroll" and "Verticla Scroll" styles among the properties of your dialog box in the resource editor, you can add scroll bars to the dialog box. Remember also to select the 'resizing' border style. However f or adding functionality to the scroll bars, you need to override the WM_VSCROLL and WM_HSCROLL message handlers. Also,override the WM_SIZE handler to set the scroll bar range if the size is reduced than the original. So you get the original size of the dialog in your OninitDialog(). The code would look something like this. Modify to your needs. 1. To OnInitDialog(),add the following line. GetWindowRect(m_rect); m_nScrollPos = 0; to get the original window size. Make m_rect a member variable of your dialog. Add another variable m_nScrollPos and initialize its value to zero. It stores the current vertical scroll position. 2. Here is the WM_SIZE handler for setting the scroll bar range.Set range 0 if size is increased more than original. void CCharlesDlg::OnSize(UINT nType, int cx, int cy) { CDialog::OnSize(nType, cx, cy); // TODO: Add your message handler code here m_nCurHeight = cy; int nScrollMax; if (cy < m_rect.Height()) { nScrollMax = m_rect.Height() - cy; } else nScrollMax = 0; SCROLLINFO si; si.cbSize = sizeof(SCROLLINFO); si.fMask = SIF_ALL;// SIF_ALL = SIF_PAGE | SIF_RANGE | SIF_POS; si.nMin = 0; si.nMax = nScrollMax; si.nPage = si.nMax/10; si.nPos = 0; SetScrollInfo(SB_VERT, &si, TRUE); } You need m_nCurHeight to store the current height of the dialog and use it to handle the scrolling in OnVScroll. m_ncurHeight is also a member variable of the dialog. 3. Here is the handler for WM_VSCROLL. void CCharlesDlg::OnVScroll(UINT nSBCode,UINT nPos,CScrollBar* pScrollBar) { //TODO:Add your message handler code here and/or call default int nDelta; int nMaxPos = m_rect.Height() - m_nCurHeight; switch(nSBCode) { case SB_LINEDOWN: if (m_nScrollPos >= nMaxPos) return; nDelta = min(nMaxPos/100,nMaxPos-m_nScrollPos); break; case SB_LINEUP: if (m_nScrollPos <= 0) return; nDelta = -min(nMaxPos/100,m_nScrollPos); break; case SB_PAGEDOWN: if (m_nScrollPos >= nMaxPos) return; nDelta = min(nMaxPos/10,nMaxPos-m_nScrollPos); break; case SB_THUMBPOSITION: nDelta = (int)nPos - m_nScrollPos; break; case SB_PAGEUP: if (m_nScrollPos <= 0) return; nDelta = -min(nMaxPos/10,m_nScrollPos); break; default: return; } m_nScrollPos += nDelta; SetScrollPos(SB_VERT,m_nScrollPos,TRUE); ScrollWindow(0,-nDelta); CDialog::OnVScroll(nSBCode, nPos, pScrollBar); } The above code handles the vertical scrolling. For horizontal scrolling add the WM_HSCROLL similarly and add the necessary code to OnSize and OnInitDialog. Information provided in this document and any software that may accompany this document is provided "as is" without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose. The user assumes the entire risk as to the accuracy and the use of this information. ...展开收缩
(系统自动生成,下载前可以参看下载内容)

下载文件列表

相关说明

  • 本站资源为会员上传分享交流与学习,如有侵犯您的权益,请联系我们删除.
  • 本站是交换下载平台,提供交流渠道,下载内容来自于网络,除下载问题外,其它问题请自行百度
  • 本站已设置防盗链,请勿用迅雷、QQ旋风等多线程下载软件下载资源,下载后用WinRAR最新版进行解压.
  • 如果您发现内容无法下载,请稍后再次尝试;或者到消费记录里找到下载记录反馈给我们.
  • 下载后发现下载的内容跟说明不相乎,请到消费记录里找到下载记录反馈给我们,经确认后退回积分.
  • 如下载前有疑问,可以通过点击"提供者"的名字,查看对方的联系方式,联系对方咨询.
 输入关键字,在本站1000多万海量源码库中尽情搜索: