实现类似VC中可设断点的编辑窗口

实现类似VC中可设断点的编辑窗口VC可设置断点的EditView，可惜没找到（呵呵，俺E文不好，没去国外站点找）。那就自己做一个吧！！
唉！！为了这个小东西俺可是走了不少弯路！！
还好，今天终于做好了，拿出来与大家分享。
作者: cuick

下载本文示例源代码

运行效果图如下:



想做一个跟踪调试工具，于是到网上找类似

1、 创建一个工程………………俺不多说了，记住要选CeditView.
2、 在OnInitialUpdate()中设置EDIT的Margin，当然留出的空间用来画断点或行号等。并得到行高。

SIZE size;GetTextExtentPoint(GetDC()->GetSafeHdc (),"A",1,&size);m_LineHeight = size.cy;//得到行的高度CEdit& theEdit = GetEditCtrl ();theEdit.SetMargins (m_LineHeight+6,0);//设置编辑框的左边界theEdit.SetLimitText(10 * 1024);//设置输入的最大文本

AddRemoveBP(int point){IntList::iterator it;it = find(lBreakPoint.begin (), lBreakPoint.end (), point);if( it != lBreakPoint.end () ) //如果此行为设置了断点的行则删除否则添加lBreakPoint.erase (it);elselBreakPoint.push_back (point);}

PaintLeft(){CBrush brushb(RGB(245,245,230));int m_breakpoint;CDC* hdc;hdc = GetWindowDC();CRect rect;GetClientRect(&rect);hdc->FillRect (CRect(rect.left+2 ,rect.top+2 ,rect.left + m_LineHeight + 7,rect.Height ()+2),&brushb);//画底色brushb.DeleteObject ();CEdit& theEdit = GetEditCtrl ();int nFirstVisible = theEdit.GetFirstVisibleLine();//得到当前显示的最上端的行号CBrush OrigBrush,brushf(RGB(255,0,0));CBrush *oldBrush = (CBrush*)hdc->SelectObject (brushf);OrigBrush.FromHandle((HBRUSH)oldBrush);IntList::iterator it;for(it = lBreakPoint.begin(); it != lBreakPoint.end(); it++){m_breakpoint = *it;if(m_breakpoint > nFirstVisible){int point = (m_breakpoint-1 - nFirstVisible)*m_LineHeight +3;//计算断点位置if(point < (rect.bottom - m_LineHeight+1)){hdc->Ellipse(rect.left + 5, point, rect.left+ m_LineHeight + 4,point+m_LineHeight);//画断点}}}hdc->SelectObject (&OrigBrush);OrigBrush.DeleteObject();brushf.DeleteObject ();}

if(point.x < m_LineHeight+6){point.x += 20;CEdit& theEdit = GetEditCtrl ();int n = theEdit.CharFromPos(point);AddRemoveBP(HIWORD(n)+1);}

CEdit& theEdit = GetEditCtrl ();int newpoint = theEdit.LineFromChar (-1) + 1;AddRemoveBP(newpoint);