1.首先在添加在资源视图中添加CRichEditCtrl控件，并关联变量：
image.png
注意将属性Multiline和Read Only设为True:
image.png
2.初始化控件
在BOOL CRichEditTestApp::InitInstance()函数中添加：
...
if (!AfxInitRichEdit2())
{
return FALSE;
}
...
3. 设置字体大小颜色
参考自Richedit在结尾添加一行，同时设置字体，大小及颜色，并在添加后自动滚屏到末行
int CRichEditTestDlg::GetNumVisibleLines(CRichEditCtrl* pCtrl)
{
CRect rect;
long nFirstChar, nLastChar;
long nFirstLine, nLastLine;
// Get client rect of rich edit control
pCtrl->GetClientRect(rect);
// Get character index close to upper left corner
nFirstChar = pCtrl->CharFromPos(CPoint(0, 0));
// Get character index close to lower right corner
nLastChar = pCtrl->CharFromPos(CPoint(rect.right, rect.bottom));
if (nLastChar < 0)
{
nLastChar = pCtrl->GetTextLength();
}
// Convert to lines
nFirstLine = pCtrl->LineFromChar(nFirstChar);
nLastLine = pCtrl->LineFromChar(nLastChar);
return (nLastLine - nFirstLine);
}
int CRichEditTestDlg::AppendToLogAndScroll(const CString& csMsg, COLORREF color, int iFontSize)
{
long nVisible = 0;
long nInsertionPoint = 0;
CHARFORMAT cf;
m_richEdit.GetSelectionCharFormat(cf);
// Initialize character format structure
cf.cbSize = sizeof(CHARFORMAT);
//static int iHeight = 1000;
cf.dwMask |= CFM_BOLD;
cf.dwEffects |= CFE_BOLD;//设置粗体，取消用cf.dwEffects&=~CFE_BOLD;
cf.dwEffects &= ~CFE_AUTOCOLOR;
cf.dwMask |= CFM_COLOR;
cf.crTextColor = color;
cf.dwMask |= CFM_SIZE;
cf.yHeight = iFontSize;//设置高度
cf.dwMask |= CFM_FACE;
_tcscpy_s(cf.szFaceName, _T("微软雅黑"));//设置字体
// Set insertion point to end of text
nInsertionPoint = m_richEdit.GetWindowTextLength();
m_richEdit.SetSel(nInsertionPoint, -1);
// Set the character format
m_richEdit.SetSelectionCharFormat(cf);
// Replace selection. Because we have nothing
// selected, this will simply insert
// the string at the current caret position.
m_richEdit.ReplaceSel(csMsg);
// Get number of currently visible lines or maximum number of visible lines
// (We must call GetNumVisibleLines() before the first call to LineScroll()!)
nVisible = GetNumVisibleLines(&m_richEdit);
// Now this is the fix of CRichEditCtrl's abnormal behaviour when used
// in an application not based on dialogs. Checking the focus prevents
// us from scrolling when the CRichEditCtrl does so automatically,
// even though ES_AUTOxSCROLL style is NOT set.
if (&m_richEdit != m_richEdit.GetFocus())
{
m_richEdit.LineScroll(INT_MAX);
m_richEdit.LineScroll(1 - nVisible);
}
return 0;
}
4.使用示例：
void CRichEditTestDlg::OnBnClickedTest()
{
CString strPerRet;
strPerRet.Format(_T("红色行\n"));
AppendToLogAndScroll(strPerRet, RGB(255, 0, 0), 300);
strPerRet.Format(_T("绿色行\n"));
AppendToLogAndScroll(strPerRet, RGB(0, 255, 0), 300);
strPerRet.Format(_T("蓝色行\n"));
AppendToLogAndScroll(strPerRet, RGB(0, 0, 255), 300);
}
5.效果图
image.png
