subject_28145.htm

一些关于vc的问答

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序号：28145 发表者：qiaofeng 发表日期：2003-01-18 12:00:09
<br>主题：进度条不会动
<br>内容：我的进度条放在对话框CDlgShow上，进度条为m_progress，我是这样用的：<BR>int m_nProgress=0;<BR>CDlgShow show;<BR>show.DoModal();<BR>show.m_progress.SetRange(0,100);<BR>for(i=0;i&lt;100;i++)<BR>{<BR>&nbsp;&nbsp; m_nProgress++;<BR>&nbsp;&nbsp; UpdateData(TRUE);//刷新<BR>&nbsp;&nbsp; show.m_progress.SetPos(m_nProgress);<BR>}<BR>怎么进度条没有反应呢？
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回复者：菜鸟也支招儿 回复日期：2003-01-18 12:10:21
<br>内容：当然了，你要把m_nProgress和控件想关联起来，不然程序怎么知道这个变量是干什么的！在MFC ClassWizard 里MemberVariables里把你加的进度条控件捆绑一个变量(如你的m_nProgress).
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回复者：qiaofeng 回复日期：2003-01-18 12:15:37
<br>内容：m_progress就是进度条的捆绑变量呀
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回复者：晚风也渡 回复日期：2003-01-18 12:21:10
<br>内容：一般在OnInitDialog()中初始化滚动范围<BR>CScrollBar* pSB=(CScrollBar*)GetDlgItem(IDC_ControlID);<BR>pSB-&gt;SetScrollRange(0,100);<BR>pSB-&gt;SetPos(0);<BR>//该下面的程序段为<BR>for(i=0;i&lt;100;i++)<BR>{<BR>&nbsp;&nbsp; m_nProgress++;<BR>&nbsp;&nbsp; UpdateData(TRUE);//刷新<BR>&nbsp;&nbsp; (CScrollBar*)GetDlgItem(IDC_ControlID)-&gt;SetPos(m_nProgress);<BR>}<BR>
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回复者：upstream 回复日期：2003-01-18 12:22:05
<br>内容：你忘了用SetTimer了<BR>
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回复者：菜鸟也支招儿 回复日期：2003-01-18 12:31:46
<br>内容：在基于对话框中，j是个成员变量，在OnInitDialog（）中初始化为j=０；不用刷新，用他干嘛？<BR>void CHaha1Dlg::OnOK() <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add extra validation here<BR>&nbsp;&nbsp;&nbsp;&nbsp;for(int i=0;i&lt;100;i++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for(int i=0;i&lt;100;i++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_nProgress.SetRange(0,100);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_nProgress.SetStep(1);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_nProgress.SetPos(j);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;j++;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;j=0;<BR>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;&nbsp;&nbsp;&nbsp;<BR>//&nbsp;&nbsp;&nbsp;&nbsp;CDialog::OnOK();<BR>}<BR>最好弄一个timer来控制，不然循环太快了，看不清楚！
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<font color=red>答案被接受</font><br>回复者：菜鸟也支招儿 回复日期：2003-01-18 12:37:53
<br>内容：用个timer来搞定！记得这个j也要初始化！<BR>void CHaha1Dlg::OnOK() <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add extra validation here<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_nProgress.SetRange(0,1000);<BR>&nbsp;&nbsp;&nbsp;&nbsp;::SetTimer(m_hWnd,1,10,NULL);<BR>//&nbsp;&nbsp;&nbsp;&nbsp;CDialog::OnOK();<BR>}<BR><BR>void CHaha1Dlg::OnTimer(UINT nIDEvent) <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your message handler code here and/or call default<BR>&nbsp;&nbsp;&nbsp;&nbsp;m_nProgress.SetPos((j++)*10);<BR>&nbsp;&nbsp;&nbsp;&nbsp;if(j==100)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;j=0;<BR>&nbsp;&nbsp;&nbsp;&nbsp;CDialog::OnTimer(nIDEvent);<BR>}<BR>2003-1-18 12:39:11