MFC RichEdit 实现多行显示，并自动滚屏

    CRichEditCtrl m_rheditOutputText;
    m_rheditOutputText.PostMessage(WM_VSCROLL, SB_BOTTOM, 0);
	CString curdata = str + "\r\n";
	CHARFORMAT cf;
	ZeroMemory(&cf, sizeof(CHARFORMAT));
	cf.cbSize = sizeof(CHARFORMAT);
	cf.dwMask = CFM_BOLD | CFM_COLOR | CFM_FACE |
		CFM_ITALIC | CFM_SIZE | CFM_UNDERLINE;
	cf.yHeight = 6 * 6;//文字高度
	m_rheditOutputText.SetReadOnly(TRUE);
	cf.crTextColor = color; //文字颜色
	m_rheditOutputText.SetSelectionCharFormat(cf);
	m_rheditOutputText.SetSel(-1, -1);
	m_rheditOutputText.ReplaceSel(curdata);
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原文链接：https://blog.csdn.net/ge646834690/article/details/113609501