关于CFontDialog初始化的时候字号的问题 我这里不知道怎么做了 保存的字号用在下次初始化的时候就不对了

[bluephenix]

大虾帮我看看下面的代码有什么问题没有？ 不知道这个字号要怎么做了
====================================================================================
CHARFORMAT cf;
LOGFONT lg;
unsigned long dw = 0;

cf.cbSize = sizeof(CHARFORMAT);
cf.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE|CFM_COLOR|CFM_FACE|CFM_SIZE
|CFM_CHARSET;
m_SendmsgBar.m_SendMsg.GetSelectionCharFormat( cf ); //m_SendMsg 继承的CRichEdit
lg.lfHeight = m_pDoc->m_UserConfig.nFontSize/20;
if(m_pDoc->m_UserConfig.bItaly)
lg.lfItalic = 1;
else
lg.lfItalic = 0;

if(m_pDoc->m_UserConfig.bUnderline)
lg.lfUnderline = 1;
else
lg.lfUnderline = 0;

lg.lfStrikeOut = false;

lg.lfCharSet = GB2312_CHARSET;
....//其他的设置

CFontDialog fd(&lg, CF_EFFECTS | CF_SCREENFONTS |CF_INITTOLOGFONTSTRUCT, NULL, this);

fd.m_cf.rgbColors = m_pDoc->m_UserConfig.FontColor;

fd.m_cf.nSizeMin = 0;
fd.m_cf.nSizeMax = 500;

if(fd.DoModal() == IDOK)
{
//在这里保存
m_pDoc->m_UserConfig.nFontSize = fd.GetSize()*2;
.....
}

[dingpiao]

先给CFontDialog::m_cf赋值看看

[goodboyws]

cf好像没起什么作用

[goodboyws]

我的代码是这样的
LOGFONT lf = m_Font;
CFontDialog fontDlg(&lf,CF_EFFECTS | CF_SCREENFONTS,NULL,this);
fontDlg.m_cf.rgbColors = m_crFont;
fontDlg.m_cf.Flags&=~CF_SHOWHELP;


CClientDC dc(NULL);
lf.lfHeight = -::MulDiv(-lf.lfHeight,
dc.GetDeviceCaps(LOGPIXELSY), 72);//像素
if (fontDlg.DoModal() == IDOK)
{
m_crFont = fontDlg.GetColor();
lf.lfHeight = -::MulDiv(-lf.lfHeight, 72,
dc.GetDeviceCaps(LOGPIXELSY));//磅值
m_Font = lf;
if (fontDlg.IsBold())
m_Font.lfWeight = FW_BOLD;
else
m_Font.lfWeight = FW_NORMAL;

m_crFont = fontDlg.m_cf.rgbColors;
m_bIsBold = fontDlg.IsBold();
m_bIsItalic = fontDlg.IsItalic();
m_bIsStrikeOut = fontDlg.IsStrikeOut();
m_bIsUnderLine = fontDlg.IsUnderline();
CHARFORMAT cf;
ZeroMemory(&cf, sizeof(CHARFORMAT));
cf.cbSize = sizeof(CHARFORMAT);
cf.dwMask = CFM_BOLD|CFM_CHARSET|CFM_COLOR|CFM_FACE|CFM_ITALIC|CFM_SIZE|CFM_UNDERLINE|CFM_STRIKEOUT;

if (m_bIsBold)
{
cf.dwEffects |= CFE_BOLD;
}
if (m_bIsItalic)
{
cf.dwEffects |= CFE_ITALIC;
}
if (m_bIsUnderLine)
{
cf.dwEffects |= CFE_UNDERLINE;
}
if (m_bIsStrikeOut)
{
cf.dwEffects |= CFM_STRIKEOUT;
}
cf.yHeight = abs(m_Font.lfHeight) * 20;
cf.crTextColor = m_crFont;
cf.bCharSet = (BYTE)m_Font.lfCharSet;
_tcscpy((TCHAR *)cf.szFaceName, m_Font.lfFaceName);

m_RichEdit.SetSel(0, -1);
m_RichEdit.SetSelectionCharFormat(cf);
m_RichEdit.SetDefaultCharFormat(cf);
m_RichEdit.SetWordCharFormat(cf);
m_RichEdit.SetSel(0, 0);


}

[bluephenix]

我跟了下 应该是在lg.lfHeight = m_pDoc->m_UserConfig.nFontSize/20; 这里出问题了 这里获取的字号和之前的对不上0
那位能给我解释下CHARFORMAT 和 LOGFONT 中两个字号的大小转换转系 还有CFontDialog::GetSize()返回的字号和上面2个的大小转换啊？？

[菜牛]

CHARFORMAT.yHeight
Character height, in twips (1/1440 of an inch or 1/20 of a printer's point).

LOGFONT.lfHeight
Specifies the height, in logical units, of the font's character cell or character. The character height value (also known as the em height) is the character cell height value minus the internal-leading value. The font mapper interprets the value specified in lfHeight in the following manner.

CFontDialog::GetSize Return Value
The font's size, in tenths of a point.

[goodboyws]

CFontDialog的LOGFONT用的是像素
lf.lfHeight = -::MulDiv(-lf.lfHeight,
dc.GetDeviceCaps(LOGPIXELSY), 72);//像素

CHARFORMAT用的是磅值
lf.lfHeight = -::MulDiv(-lf.lfHeight, 72,
dc.GetDeviceCaps(LOGPIXELSY));//磅值
CFontDialog会改变入传的LOGFONT，所以我一般不用GetSize

[dingpiao]

获取当前字体信息
CClientDC dc(this);
TEXTMETRIC tm;
dc.GetTextMetrics(&tm);

[dingpiao]

记得孙鑫的视频里有讲，想不起了