实现类似VC中可设断点的编辑窗口[图](2)
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 ();
}
5、 处理鼠标左键单击,添加删除断点。本文发表于http://bianceng.cn(编程入门网)
if(point.x < m_LineHeight+6)
{
point.x += 20;
CEdit& theEdit = GetEditCtrl ();
int n = theEdit.CharFromPos(point);
AddRemoveBP(HIWORD(n)+1);
}
6、 再加一个热键处理得到当前光标所在的行。
CEdit& theEdit = GetEditCtrl ();
int newpoint = theEdit.LineFromChar (-1) + 1;
AddRemoveBP(newpoint);
7、 在一些必要的消息处理后面调用PaintLeft。OK!大功告成!!(^%$#@#@$#$$%……呵呵,俺想起小宝…………)
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