下了一个WinCE上的电子书程序,有一些不明白,请问以下代码是什么意思?int m_TotalPage; //总页数
int m_CurrentPage;
int m_PageSize;
int m_PageWords;
DWORD m_FileLen; //文件长度(byte)
BYTE* m_FileMem; //内存文件
BYTE* m_lpFile; // 文件读取位置指针,
BYTE* m_lpstrbuff; //
RunInit m_InitInf; //需要保存的运行信息
CFont m_BookFont;
...... //str 是读出的字符
pEdit->SetWindowText(str);
line = pEdit->GetLineCount();
........
/////以下代码是什么意思?
//计算每页行数
CDC* pDC = (CDC*)GetDC();
CRect txtRect;
pDC->SelectObject(&m_BookFont);
pDC->DrawText(L"我们", &txtRect, DT_CALCRECT);
int pagehight = 240 / txtRect.Height(); int pagechars = (pagehight * str.GetLength() )/line;
pagesize = ( pagehight*len )/line;
pagecount = m_FileLen/pagesize + 1; m_PageWords = pagechars;
m_PageSize = pagesize;
m_TotalPage = pagecount;
int m_CurrentPage;
int m_PageSize;
int m_PageWords;
DWORD m_FileLen; //文件长度(byte)
BYTE* m_FileMem; //内存文件
BYTE* m_lpFile; // 文件读取位置指针,
BYTE* m_lpstrbuff; //
RunInit m_InitInf; //需要保存的运行信息
CFont m_BookFont;
...... //str 是读出的字符
pEdit->SetWindowText(str);
line = pEdit->GetLineCount();
........
/////以下代码是什么意思?
//计算每页行数
CDC* pDC = (CDC*)GetDC();
CRect txtRect;
pDC->SelectObject(&m_BookFont);
pDC->DrawText(L"我们", &txtRect, DT_CALCRECT);
int pagehight = 240 / txtRect.Height(); int pagechars = (pagehight * str.GetLength() )/line;
pagesize = ( pagehight*len )/line;
pagecount = m_FileLen/pagesize + 1; m_PageWords = pagechars;
m_PageSize = pagesize;
m_TotalPage = pagecount;
CRect txtRect;
pDC->SelectObject(&m_BookFont); //选择字体
pDC->DrawText(L"我们", &txtRect, DT_CALCRECT); //在屏上输出"我们",并用txtRect记录"我们"所占的区域.
int pagehight = 240 / txtRect.Height(); //240是屏幕的高度,单位应该是像素,计算结
//果pagehight是屏幕能输出多少行字.int pagechars = (pagehight * str.GetLength() )/line; //line在哪里定义了??代表
//什么,楼主怎么没有说啊.
pagesize = ( pagehight*len )/line; //len在哪里定义了,代表什么,楼主
//也没说?
pagecount = m_FileLen/pagesize + 1; m_PageWords = pagechars;
m_PageSize = pagesize;
m_TotalPage = pagecount;
line = pEdit->GetLineCount();
// 读取文件内容
len = file.GetLength();
lpData = new BYTE[len+1];
file.Read(lpData, len);
file.Close();