自定义行间距 多行输出 解决DrawText 无法自定义行间距的问题

//nRowDis 行间距  strText 输出内容 

void DrawMultLineText(CDC* pDC ,CRect rect, int nRowDis, UINT nFromat, CString strText) 
{
	if( strText.GetLength() <= 0 )
		return;


	WCHAR* pText = strText.GetBuffer();
	int nCount = strText.GetLength();
	CRect rtChar;
	CSize size = pDC->GetTextExtent(pText + 0, 1);
	int nRowHeight = size.cx + nRowDis;
	rtChar.top = rect.top;
	rtChar.left = rect.left;
	rtChar.bottom	= rtChar.top + nRowDis + size.cy;
	rtChar.right	= rtChar.left + size.cx;	
	CString strChar;
	for (int nCharIndex = 0; nCharIndex < nCount; nCharIndex++)
	{
		if( rtChar.right > rect.right )
		{
			rtChar.top = rtChar.bottom;
			rtChar.bottom += nRowHeight;
			size = pDC->GetTextExtent(pText + nCharIndex, 1);
			rtChar.left = rect.left;
			rtChar.right = rtChar.left + size.cx;
			if( rtChar.bottom > rect.bottom )
				break;
		}
		strChar = pText[nCharIndex];
		pDC->DrawText(strChar, rtChar, nFromat);
		size = pDC->GetTextExtent(pText + nCharIndex + 1, 1);
		rtChar.left = rtChar.right;
		rtChar.right += size.cx;
	}
} 

多行文本 自定义 行间距