获取CRichEditCtrl控件中的格式信息，将格式保存在容器中

方法一：

一个字符一个字符的进行判断

缺点：费时

//  统计删除线位置

std::vector <Node> delPositionVector;CHARFORMAT2 cf;memset(&cf,0,sizeof(CHARFORMAT2));int nStart=0;int nEnd=-1;BOOL bContinue=FALSE; //删除线或红字体是否处于连续中//-----------------------------------------删除线位置for (int i=0;i<GetRichEditCtrl().GetTextLength();i++){GetRichEditCtrl().SetSel(i,i+1);GetRichEditCtrl().GetSelectionCharFormat(cf);if ((cf.dwEffects&CFE_STRIKEOUT)==CFE_STRIKEOUT){if (!bContinue)// 前一个字符 没有删除线{bContinue=TRUE;nStart=i;nEnd=i+1;}else{  //前一个字符 也有删除线nEnd=i+1;}}else{if (bContinue)//前一个字符有删除线，但是本次字符无删除线  这是需要将删除线位置记录到容器中{Node node;node.nStart=nStart;node.nEnd=nEnd;delPositionVector.push_back(node);}bContinue=FALSE;}}if (nEnd==GetRichEditCtrl().GetTextLength())// 考虑最后一个字符也带删除线时{Node node;node.nStart=nStart;node.nEnd=nEnd;delPositionVector.push_back(node);}

 

 

// 统计红色字体位置

nStart=0;nEnd=-1;//  初始化  std::vector <Node> addPositonVector;bContinue=FALSE;for (int i=0;i<GetRichEditCtrl().GetTextLength();i++){GetRichEditCtrl().SetSel(i,i+1);GetRichEditCtrl().GetSelectionCharFormat(cf);if (GetRValue(cf.crTextColor)==255&&GetGValue(cf.crTextColor)==0&&GetBValue(cf.crTextColor)==0){if (!bContinue)// 前一个字符 不是红色{bContinue=TRUE;nStart=i;nEnd=i+1;}else{  //前一个字符 也是红色nEnd=i+1;}}else{if (bContinue)//前一个字符红色，但是本字符不是红色  这是需要将红色位置记录到容器中{Node node;node.nStart=nStart;node.nEnd=nEnd;addPositonVector.push_back(node);}bContinue=FALSE;}}if (nEnd==GetRichEditCtrl().GetTextLength())// 考虑最后一个字符也是红色{Node node;node.nStart=nStart;node.nEnd=nEnd;addPositonVector.push_back(node);}

 

方法二： 折半递归

 

// 删除线

DelPosition(int nStart,int nEnd){if ((nEnd-nStart)<=0)   return;int len=nEnd-nStart;GetRichEditCtrl().SetSel(nStart,nEnd);CHARFORMAT2 cf;memset(&cf,0,sizeof(CHARFORMAT2));DWORD consistentProperty;consistentProperty=GetRichEditCtrl().GetSelectionCharFormat(cf);Node node;if ((nEnd-nStart)==1){if ((cf.dwEffects&CFE_STRIKEOUT)!=CFE_STRIKEOUT)return;node.nStart=nStart;node.nEnd=nEnd;if (m_delPosition.empty()){m_delPosition.push_back(node);}else{if(m_delPosition.back().nEnd==nStart){m_delPosition.back().nEnd=nEnd;}else{m_delPosition.push_back(node);}}return;}if ((consistentProperty&CFM_STRIKEOUT)==CFM_STRIKEOUT)//  都有删除线 或 都无删除线{if ((cf.dwEffects&CFE_STRIKEOUT)!=CFE_STRIKEOUT) // 都无删除线return;node.nStart=nStart;node.nEnd=nEnd;if (m_delPosition.empty()){m_delPosition.push_back(node);}else{if(m_delPosition.back().nEnd==nStart){m_delPosition.back().nEnd=nEnd;}else{m_delPosition.push_back(node);}}return;}DelPosition(nStart,nStart+len/2);DelPosition(nStart+len/2,nEnd);}

 

 

// 下划线

UnderLinePosition(int nStart,int nEnd){if ((nEnd-nStart)<=0)return;int len=nEnd-nStart;GetRichEditCtrl().SetSel(nStart,nEnd);CHARFORMAT2 cf;memset(&cf,0,sizeof(CHARFORMAT2));DWORD consistentProperty;consistentProperty=GetRichEditCtrl().GetSelectionCharFormat(cf);Node node;if ((nEnd-nStart)==1){if ((cf.dwEffects&CFE_UNDERLINE)!=CFE_UNDERLINE)return;node.nStart=nStart;node.nEnd=nEnd;if (m_underLinePosition.empty()){m_underLinePosition.push_back(node);}else{if(m_underLinePosition.back().nEnd==nStart){m_underLinePosition.back().nEnd=nEnd;}else{m_underLinePosition.push_back(node);}}return;}if ((consistentProperty&CFM_UNDERLINE)==CFM_UNDERLINE)//  都有删除线 或 都无删除线{if ((cf.dwEffects&CFE_UNDERLINE)!=CFE_UNDERLINE)return;node.nStart=nStart;node.nEnd=nEnd;if (m_underLinePosition.empty()){m_underLinePosition.push_back(node);}else{if(m_underLinePosition.back().nEnd==nStart){m_underLinePosition.back().nEnd=nEnd;}else{m_underLinePosition.push_back(node);}}return;}UnderLinePosition(nStart,nStart+len/2);UnderLinePosition(nStart+len/2,nEnd);}

 

// 红色线

RedCharPosition(int nStart,int nEnd){if ((nEnd-nStart)<=0)return;int len=nEnd-nStart;GetRichEditCtrl().SetSel(nStart,nEnd);CHARFORMAT2 cf;memset(&cf,0,sizeof(CHARFORMAT2));DWORD consistentProperty;consistentProperty=GetRichEditCtrl().GetSelectionCharFormat(cf);Node node;if ((nEnd-nStart)==1){if (!(GetRValue(cf.crTextColor)==255&&GetGValue(cf.crTextColor)==0&&GetBValue(cf.crTextColor)==0))  return;node.nStart=nStart;node.nEnd=nEnd;if (m_red_addPostion.empty()){m_red_addPostion.push_back(node);}else{if(m_red_addPostion.back().nEnd==nStart){m_red_addPostion.back().nEnd=nEnd;}else{m_red_addPostion.push_back(node);}}return;}if ((consistentProperty&CFM_COLOR)==CFM_COLOR)//  都有相同的颜色{if (!(GetRValue(cf.crTextColor)==255&&GetGValue(cf.crTextColor)==0&&GetBValue(cf.crTextColor)==0))  return;node.nStart=nStart;node.nEnd=nEnd;if (m_red_addPostion.empty()){m_red_addPostion.push_back(node);}else{if(m_red_addPostion.back().nEnd==nStart){m_red_addPostion.back().nEnd=nEnd;}else{m_red_addPostion.push_back(node);}}return;}RedCharPosition(nStart,nStart+len/2);RedCharPosition(nStart+len/2,nEnd);}

 

//蓝色文字

 

BlueCharPosition(int nStart,int nEnd){if ((nEnd-nStart)<=0)return;int len=nEnd-nStart;GetRichEditCtrl().SetSel(nStart,nEnd);CHARFORMAT2 cf;memset(&cf,0,sizeof(CHARFORMAT2));DWORD consistentProperty;consistentProperty=GetRichEditCtrl().GetSelectionCharFormat(cf);Node node;if ((nEnd-nStart)==1){if (!(GetRValue(cf.crTextColor)==0&&GetGValue(cf.crTextColor)==0&&GetBValue(cf.crTextColor)==255))  return;node.nStart=nStart;node.nEnd=nEnd;if (m_blue_addPosition.empty()){m_blue_addPosition.push_back(node);}else{if(m_blue_addPosition.back().nEnd==nStart){m_blue_addPosition.back().nEnd=nEnd;}else{m_blue_addPosition.push_back(node);}}return;}if ((consistentProperty&CFM_COLOR)==CFM_COLOR)//  都有相同的颜色{if (!(GetRValue(cf.crTextColor)==0&&GetGValue(cf.crTextColor)==0&&GetBValue(cf.crTextColor)==255))  return;node.nStart=nStart;node.nEnd=nEnd;if (m_blue_addPosition.empty()){m_blue_addPosition.push_back(node);}else{if(m_blue_addPosition.back().nEnd==nStart){m_blue_addPosition.back().nEnd=nEnd;}else{m_blue_addPosition.push_back(node);}}return;}BlueCharPosition(nStart,nStart+len/2);BlueCharPosition(nStart+len/2,nEnd);}

 

// 背景色 rgb(200,200,200)

ReCoverPosition(int nStart,int nEnd){if ((nEnd-nStart)<=0)return;int len=nEnd-nStart;GetRichEditCtrl().SetSel(nStart,nEnd);CHARFORMAT2 cf;memset(&cf,0,sizeof(CHARFORMAT2));DWORD consistentProperty;consistentProperty=GetRichEditCtrl().GetSelectionCharFormat(cf);Node node;if ((nEnd-nStart)==1){if (!(GetRValue(cf.crBackColor)==200&&GetGValue(cf.crBackColor)==200&&GetBValue(cf.crBackColor)==200))  return;node.nStart=nStart;node.nEnd=nEnd;if (m_ReCoverPosition.empty()){m_ReCoverPosition.push_back(node);}else{if(m_ReCoverPosition.back().nEnd==nStart){m_ReCoverPosition.back().nEnd=nEnd;}else{m_ReCoverPosition.push_back(node);}}return;}if ((consistentProperty&CFM_BACKCOLOR)==CFM_BACKCOLOR)//  都有相同的颜色{if (!(GetRValue(cf.crBackColor)==200&&GetGValue(cf.crBackColor)==200&&GetBValue(cf.crBackColor)==200))   return;node.nStart=nStart;node.nEnd=nEnd;if (m_ReCoverPosition.empty()){m_ReCoverPosition.push_back(node);}else{if(m_ReCoverPosition.back().nEnd==nStart){m_ReCoverPosition.back().nEnd=nEnd;}else{m_ReCoverPosition.push_back(node);}}return;}ReCoverPosition(nStart,nStart+len/2);ReCoverPosition(nStart+len/2,nEnd);}

 

          递归算法关键是判断：        当递归进行到底，不能继续递归时，是何种情况    然后，对这种情况进行单独处理

 

          最初的递归想法：

初始思路：DelPosition(int len){if (len==1){if(无删除线) return;else{保存在容器中}return;}DelPosition(len/2 ,前一段);DelPosition(len/2 ,后一段);}扩展思路后：DelPosition(int len){if (len==1){if(无删除线) return;else{保存在容器中}return;}if(整体无删除线)return;if (整体有删除线){保存在容器中;return;}// 有的字体有删除线 有的字体没有删除线DelPosition(len/2 ,前一段);DelPosition(len/2 ,后一段);}