对话框加自绘滚动条//如何呀???
!!!!!!!!!!!!!!
//使用mfc滚动条方法；使用自绘的咋触发消息？
void CHistory::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
// TODO: Add your message handler code here and/or call default
SCROLLINFO scrollinfo;
GetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
switch (nSBCode)
{
case SB_LEFT:
ScrollWindow((scrollinfo.nPos-scrollinfo.nMin)*1,0);
scrollinfo.nPos = scrollinfo.nMin;
SetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
break;
case SB_RIGHT:
ScrollWindow((scrollinfo.nPos-scrollinfo.nMax)*1,0);
scrollinfo.nPos = scrollinfo.nMax;
SetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
break;
case SB_LINELEFT:
scrollinfo.nPos -= 1;
if (scrollinfo.nPos<scrollinfo.nMin){
scrollinfo.nPos = scrollinfo.nMin;
break;
}
SetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
ScrollWindow(1,0);
break;
case SB_LINERIGHT:
scrollinfo.nPos += 1;
if (scrollinfo.nPos>scrollinfo.nMax)
{
scrollinfo.nPos = scrollinfo.nMax;
break;
}
SetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
ScrollWindow(-1,0);
break;
case SB_PAGELEFT:
scrollinfo.nPos -= 1;
if (scrollinfo.nPos){
scrollinfo.nPos = scrollinfo.nMin;
break;
}
SetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
ScrollWindow(1*5,0);
break;
case SB_PAGERIGHT:
scrollinfo.nPos += 1;
if (scrollinfo.nPos>scrollinfo.nMax)
{
scrollinfo.nPos = scrollinfo.nMax;
break;
}
SetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
ScrollWindow(-1*5,0);
break;
case SB_THUMBPOSITION:
break;
case SB_THUMBTRACK:
ScrollWindow((scrollinfo.nPos-nPos)*1,0);
scrollinfo.nPos = nPos;
SetScrollInfo(SB_HORZ,&scrollinfo,SIF_ALL);
break;
case SB_ENDSCROLL:
break;
}
Invalidate();
CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}
