subject_54647.htm

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序号：54647 发表者：eric 发表日期：2003-09-29 17:34:40
<br>主题：对话框内绘图
<br>内容：基于对话框的程序，通过对话框上的一Button生成另一个无模式对话框。<BR>，对话框已生成，没显示出来，相应函数为<BR>OnShoworhide() <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your control notification handler code here<BR>&nbsp;&nbsp;&nbsp;&nbsp;if(m_pShowHideDlg-&gt;IsWindowVisible())<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_pShowHideDlg-&gt;ShowWindow(SW_HIDE);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((CButton*)GetDlgItem(IDC_SHOWORHIDE))-&gt;SetDlgItemText(IDC_SHOWORHIDE,&#34;显示&#34;);<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;else<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;m_pShowHideDlg-&gt;ShowWindow(SW_SHOW);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;((CButton*)GetDlgItem(IDC_SHOWORHIDE))-&gt;SetDlgItemText(IDC_SHOWORHIDE,&#34;隐藏&#34;);<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>}<BR><BR>在生成的另一对话框内有OnPaint绘图：<BR>void CShowHideDlg::OnPaint() <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;CClientDC dc(this); // device context for painting<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your message handler code here<BR>&nbsp;&nbsp;&nbsp;&nbsp;CRect rect;<BR>&nbsp;&nbsp;&nbsp;&nbsp;GetClientRect(&amp;rect);<BR>&nbsp;&nbsp;&nbsp;&nbsp;dc.FillSolidRect(rect,RGB(0,0,0));<BR>&nbsp;&nbsp;&nbsp;&nbsp;dc.SelectObject(&amp;m_whitePen);<BR>&nbsp;&nbsp;&nbsp;&nbsp;dc.Rectangle(0,0,150,150);<BR>&nbsp;&nbsp;&nbsp;&nbsp;// Do not call CDialog::OnPaint() for painting messages<BR>}<BR>会出现该对话框不停闪烁的现象，如何解决？
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<font color=red>答案被接受</font><br>回复者：无情阁东雪 回复日期：2003-09-29 18:27:00
<br>内容：void CShowHideDlg::OnPaint() <BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;CClientDC dc(this); -----&gt;CPaintDC dc(this);<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;// TODO: Add your message handler code here<BR>&nbsp;&nbsp;&nbsp;&nbsp;CRect rect;<BR>&nbsp;&nbsp;&nbsp;&nbsp;GetClientRect(&amp;rect);<BR>&nbsp;&nbsp;&nbsp;&nbsp;dc.FillSolidRect(rect,RGB(0,0,0));<BR>&nbsp;&nbsp;&nbsp;&nbsp;dc.SelectObject(&amp;m_whitePen);<BR>&nbsp;&nbsp;&nbsp;&nbsp;dc.Rectangle(0,0,150,150);<BR>&nbsp;&nbsp;&nbsp;&nbsp;// Do not call CDialog::OnPaint() for painting messages<BR>}
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