MFC计算字符串长度,获取字符长度
作者:互联网
CClientDC dc(GetDlgItem(IDC_EDIT_ShowMsg));
CFont *pOldFont = dc.SelectObject(this->GetFont());
CRect rcShow;
GetDlgItem(IDC_EDIT_ShowMsg)->GetClientRect(rcShow);
int maxWidth = rcShow.Width() - 15;
CString strSpace;
CString strTmp;
strTmp.Format(_T("%s%s%s"), msg, strSpace, strTime);
SIZE size = {0};
while (size.cx < maxWidth)
{
::GetTextExtentPoint32(dc.m_hDC, strTmp, strTmp.GetLength(), &size);
strTmp.Format(_T("%s%s%s"), msg, strSpace, strTime);
strSpace += _T(" ");
}
strMsg += strTmp + _T("\r\n");
dc.SelectObject(pOldFont);
一定要记得选入字体,不然计算的长度会不精确
标签:MFC,dc,rcShow,strSpace,strTmp,字符串,长度,s%,size 来源: https://blog.csdn.net/tajon1226/article/details/89335366