CDuiString m_test_string = _T("测试字符串")HDC m_hDc = m_pm.GetPaintDC();// 100 是xml中配置的字体的编号HFONT hFont = m_pm.GetFont(100);::SelectObject(m_hDc, hFont);SIZE size;GetTextExtentPoint32(m_hDc, m_test_string, i, &size);return size.cx
The GetTextExtentPoint32 function computes the width and height of the specified string of text.