基于WORD文档的防篡改水印系统设计与实现(10)
{wf[i].color=RGB(255,254,255);}
if ((num[tempm+1]>'8') && (num[tempm+2]<='8') && (num[tempm+3]<='8'))
{wf[i].color=RGB(255,254,254);}
if ((num[tempm+1]<='8') && (num[tempm+2]>'8') && (num[tempm+3]>'8'))
{wf[i].color=RGB(254,255,255);}
if ((num[tempm+1]<='8') && (num[tempm+2]>'8') && (num[tempm+3]<='8'))
{wf[i].color=RGB(254,255,254);}
if ((num[tempm+1]<='8') && (num[tempm+2]<='8') && (num[tempm+3]>'8'))
{wf[i].color=RGB(254,254,255);}
if ((num[tempm+1]<='8') && (num[tempm+2]<='8') && (num[tempm+3]<='8'))
{wf[i].color=RGB(254,254,254);}
}
font.AttachDispatch (sel.GetFont());
sel.MoveLeft(COleVariant((short)1),COleVariant((short)1),COleVariant((short)0));
(7)水印嵌入后会生成新的WORD文档.加入后缀为watermark在当前目录下，如图3.3所示。
sel.HomeKey(COleVariant((short)6),COleVariant((short)0));
wfilename=wfilename.Left(wfilename.GetLength()-4)+"watermark"+wfilename.Right(4);
appDoc.SaveAs(COleVariant(wfilename), COleVariant((short)0),
vFalse, COleVariant(""), vFalse, COleVariant(""), vFalse, vFalse, vFalse, vFalse, vFalse, vFalse, vFalse, vTrue, vFalse,vFalse);
图3.3 新建嵌入水印文档
3.2.2水印的提取模块
(1)打开有水印的WORD文档，然后输入密钥以检测水印正确性，提取界面如图3.4所示。
void CWordwaterDlg::OnJcwater()
{
CQLwater JCwater;
wrongflag=1;
tempsum=0;
if (IDOK==JCwater.DoModal())
{
switch (JCwater.m_editm)
{
case 1:m=3;p=1;break;
case 2:m=3;p=1;break;
case 3:m=3;p=1;break;
case 4:m=4;p=3;break;
case 5:m=7;p=4;break;
case 6:m=7;p=4;break;
case 7:m=7;p=4;break;
case 8:m=11;p=7;break;
case 9:m=11;p=7;break;
}
tempm=m;
n=m*tempn;
wfilename=JCwater.FileName;
_Application app;
COleVariant covTrue((short)TRUE),
covFalse((short)FALSE),
covOptional((long)DISP_E_PARAMNOTFOUND, VT_ERROR);
if(!app.CreateDispatch("Word.Application"))
{
AfxMessageBox("Couldn't start Word.");
}
else
{
app.SetVisible(TRUE);