vc++ Ìí¼Ó¿ÉÒÔ¹ö¶¯Õû¸ö´°¿ÚµÄ¹ö¶¯Ìõ(ˮƽºÍÊúÖ±)²¢¿ÉʹÓÃÊó±ê¹ö¶¯ÂֺͼüÅÌÉϵÄÉÏϼü¿ØÖƹö¶¯Ìõ

ˮƽºÍÊúÖ±µÄ¹ö¶¯Ìõ¿ÉÒÔÔÚ´°¿ÚµÄÊôÐÔÖÐÌí¼Ó£¬·Ö±ðÊÇ£ºHorizontal scrollºÍVertical scroll¡£

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1.³õʼ»¯

void CScroolDlgDlg::InitScrool()
{
CRect rtClient;
GetClientRect(rtClient);
SCROLLINFO vInfo;
vInfo.cbSize = sizeof(SCROLLINFO);
vInfo.fMask = SIF_ALL;
vInfo.nMax = 600;//ÕâÊÇÄãÒª¹ö¶¯µÄ·¶Î§
vInfo.nMin = vInfo.nPos = vInfo.nTrackPos = 0; //Õâ¸öΪ0¼´¿É
vInfo.nPage = rtClient.bottom;//ÕâÊÇÄã´°¿ÚµÄ¸ß¶È£¨ºáÏò¹ö¶¯ÌõµÄ»°¾ÍÊÇ´°¿ÚµÄ¿í¶È£©
SetScrollInfo(SB_VERT, &vInfo);//£¨SB_HORT¾ÍÉèÖúáÏò¹ö¶¯Ìõ£©
}

2.Ìí¼ÓWM_VSCROLLʼþ

void CScroolDlgDlg::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
// TODO: Add your message handler code here and/or call default
SCROLLINFO vinfo = {0};
GetScrollInfo(SB_VERT, &vinfo, SIF_ALL);
int iPos = vinfo.nPos;


INT32 iMaxPos = vinfo.nMax-vinfo.nPage;

int hPage = vinfo.nPage;
int Inc = 1;


switch (nSBCode)
{
case SB_BOTTOM: //¹ö¶¯µ½×îÏÂÃæ
if (vinfo.nPos < iMaxPos)
{
ScrollWindow(0, -1*Inc * (iMaxPos-vinfo.nPos));
vinfo.nPos = iMaxPos;
}
break;


case SB_TOP: //¹ö¶¯µ½×îÉÏÃæ
if (vinfo.nPos > vinfo.nMin)
{
ScrollWindow(0, Inc * (vinfo.nPos-vinfo.nMin));
vinfo.nPos = vinfo.nMin;
}
break;


case SB_LINEUP: //ÏòÉϹö¶¯Ò»ÐÐ
if (vinfo.nPos > vinfo.nMin)
{
ScrollWindow(0, Inc);
vinfo.nPos -= 1;
}
break;


case SB_LINEDOWN: //ÏòϹö¶¯Ò»ÐÐ
if (vinfo.nPos < iMaxPos)
{
ScrollWindow(0, -1*Inc);
vinfo.nPos += 1;
}
break;


case SB_PAGEUP: //ÏòÉϹö¶¯Ò»Ò³
if (vinfo.nPos-100 >= vinfo.nMin)
{
ScrollWindow(0, 100*Inc);
vinfo.nPos -= 100;
}
else
{
// ScrollWindow(0, (vinfo.nPos-iMaxPos)*Inc);
if (vinfo.nPos <= 0)
{
ScrollWindow(0,0);
}
else
{
ScrollWindow(0,vinfo.nPos);
}
// ScrollWindow(0, max(0,(vinfo.nPos-iMaxPos)*Inc));
vinfo.nPos = vinfo.nMin;
}
break;


case SB_PAGEDOWN: //ÏòϹö¶¯Ò»Ò³
if (vinfo.nPos+100 <= iMaxPos)
{
ScrollWindow(0, -100*Inc);
vinfo.nPos += 100;
}
else
{
ScrollWindow(0, (vinfo.nPos-iMaxPos)*Inc);
vinfo.nPos = iMaxPos;
}
break;


case SB_ENDSCROLL: //¹ö¶¯ÌõÒƶ¯½áÊø
break;


case SB_THUMBPOSITION:
break;


case SB_THUMBTRACK:
ScrollWindow(0, Inc * (vinfo.nPos - nPos));
vinfo.nPos = nPos;
break;
}
SetScrollInfo(SB_VERT, &vinfo);


CDialog::OnVScroll(nSBCode, nPos, pScrollBar);
}

¶þ¡¢Ë®Æ½¹ö¶¯Ìõ

1.³õʼ»¯

void CScroolDlgDlg::InitBottomScroll()
{
CRect rtClient;
GetClientRect(rtClient);
SCROLLINFO hInfo;
hInfo.cbSize = sizeof(SCROLLINFO);
hInfo.fMask = SIF_ALL;
hInfo.nMax = 1000;//ÕâÊÇÄãÒª¹ö¶¯µÄ·¶Î§
hInfo.nMin = hInfo.nPos = hInfo.nTrackPos = 0; //Õâ¸öΪ0¼´¿É
hInfo.nPage = rtClient.Width();//ÕâÊÇ´°¿ÚµÄ¿í¶È(Èç¹ûÊǺáÏò¹ö¶¯ÌõµÄ»°£¬¾ÍÕâÊÇÄã´°¿ÚµÄ¸ß¶È)
SetScrollInfo(SB_HORZ, &hInfo);//£¨SB_VERT¾ÍÉèÖÃ×ÝÏò¹ö¶¯Ìõ£©

}

2.Ìí¼ÓWM_HSCROLLʼþ

void CMySpaceSubmitInfo::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
// TODO: Add your message handler code here and/or call default
SCROLLINFO hInfo = {0};
GetScrollInfo(SB_HORZ,&hInfo,SIF_ALL);
int iMaxPos = hInfo.nMax - hInfo.nPage;
int hPage = hInfo.nPage;
int inc = 1;
// Determine the new position of scroll box.
switch (nSBCode)
{
case SB_LEFT: // Scroll to far left.
ScrollWindow(inc *(hInfo.nPos-hInfo.nMin),0);
hInfo.nPos = hInfo.nMin;
break;

case SB_RIGHT: // Scroll to far right.
ScrollWindow(-1*inc*(iMaxPos - hInfo.nPos),0);
hInfo.nPos = iMaxPos;
break;

case SB_ENDSCROLL: // End scroll.
break;

case SB_LINELEFT: // Scroll left.
if (hInfo.nPos > hInfo.nMin)
{
ScrollWindow(inc,0);
hInfo.nPos -=1;
}
break;

case SB_LINERIGHT: // Scroll right.
if(hInfo.nPos <=iMaxPos)
{
ScrollWindow(-1*inc,0);
hInfo.nPos +=1;
}
break;

case SB_PAGELEFT: // Scroll one page left.
{
// Get the page size.
if (hInfo.nPos - 100 >= hInfo.nMin)
{
ScrollWindow(100*inc,0);
hInfo.nPos -=100;
}
else
{
if (hInfo.nPos <= 0)
{
ScrollWindow(0,0);
}
else
{
ScrollWindow(hInfo.nPos,0);
}
// ScrollWindow((hInfo.nPos - iMaxPos)*inc,0);
hInfo.nPos = hInfo.nMin;
}
}
break;

case SB_PAGERIGHT: // Scroll one page right.
{
// Get the page size.
if (hInfo.nPos + 100 <= iMaxPos)
{
ScrollWindow(-100*inc,0);
hInfo.nPos +=100;
}
else
{
ScrollWindow((hInfo.nPos - iMaxPos)*inc,0);
hInfo.nPos = iMaxPos;
}
}
break;

case SB_THUMBPOSITION: // Scroll to absolute position. nPos is the position
// curpos = nPos; // of the scroll box at the end of the drag operation.
break;

case SB_THUMBTRACK: // Drag scroll box to specified position. nPos is the
ScrollWindow(inc*(hInfo.nPos-nPos),0);
hInfo.nPos = nPos; // position that the scroll box has been dragged to.
break;
}

// Set the new position of the thumb (scroll box).
SetScrollInfo(SB_HORZ,&hInfo);
CDialog::OnHScroll(nSBCode, nPos, pScrollBar);

}

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1.Ìí¼Óʼþ£ºON_WM_MOUSEWHEEL

2.´úÂ룺

BOOL CScroolDlgDlg::OnMouseWheel(UINT nFlags, short zDelta, CPoint pt)
{
// TODO: Add your message handler code here and/or call default
SCROLLINFO vinfo = {0};
GetScrollInfo(SB_VERT, &vinfo, SIF_ALL);
int iPos = vinfo.nPos;
INT32 iMaxPos = vinfo.nMax-vinfo.nPage;
//Ê×ÏÈÅжÏÊó±ê¹ö¶¯µÄ·½Ïò/////////////////////////
//1.Èç¹ûÊó±ê¹ö¶¯ÌõÏòÉÏ(Ô¶ÀëʹÓÃÕß),´ËʱzDeltaµÄֵΪÕý.
//ÅжϹö¶¯ÌõÊÇ·ñÒѾ­µ½ÁËÉ϶¥ÁË
if (zDelta > 0)
{
if (iPos <= 0)
{
;
}
else
{
int iScrollUp = iPos - zDelta;
if (iScrollUp < 0)
{
ScrollWindow(0,iPos);
vinfo.nPos = vinfo.nMin;
}
else
{
ScrollWindow(0,zDelta);
vinfo.nPos -= zDelta;
}
}
}
else if (zDelta < 0) //ÏòÏ»¬¶¯Êó±ê¹ö¶¯ÂÖ
{
if (iPos >= iMaxPos)
{
;
}
else
{
int iScrollDown = iPos + (-1)*zDelta;
if (iScrollDown > iMaxPos)
{
ScrollWindow(0,iPos-iMaxPos);
vinfo.nPos = iMaxPos;
}
else
{
ScrollWindow(0,zDelta);
vinfo.nPos = vinfo.nPos + (-1)*zDelta;
}
}
}
SetScrollInfo(SB_VERT,&vinfo);
return CDialog::OnMouseWheel(nFlags, zDelta, pt);
}

ËÄ¡¢Ê¹ÓüüÅÌÉϵÄÉÏϼýÍ·½øÐ묶¯´°¿Ú¹ö¶¯Ìõ

1.Ìí¼ÓÏûÏ¢£ºPreTranslateMessage

2.´úÂ룺

BOOL CScroolDlgDlg::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class
if (pMsg->message == WM_KEYDOWN)
{
if (pMsg->wParam == VK_DOWN)
{
int iScroNum = 5;
SCROLLINFO vInfo = {0};
GetScrollInfo(SB_VERT,&vInfo,SIF_ALL);
int iPos = vInfo.nPos;
INT32 iMax = vInfo.nMax - vInfo.nPage;
//Ê×ÏÈÅжϴ°¿Ú¹ö¶¯ÌõÊÇ·ñÒѾ­µ½ÁË×îÏÂÃæ
if (iPos >= iMax)
{
;
}
else
{
//ÅжÏÏòÏ»¬¶¯5ÏñËغóÊÇ·ñ»á³¬¹ýÏòÏ»¬¶¯µÄ×î´óÖµ
int iScrolDown = iScroNum + iPos;
if (iScroNum > iMax) //³¬¹ýÁË
{
ScrollWindow(0,iPos - iMax);
vInfo.nPos = iMax;
}
else if (iScrolDown <= iMax) //Òƶ¯ºó²»³¬¹ý×îÏÂÃæ
{
ScrollWindow(0,(-1)*iScroNum);
vInfo.nPos += iScroNum;
}
}
SetScrollInfo(SB_VERT,&vInfo);
}//end down

if (pMsg->wParam == VK_UP)
{
SCROLLINFO vInfo = {0};
GetScrollInfo(SB_VERT,&vInfo,SIF_ALL);
int iPos = vInfo.nPos;
UINT32 iMaxPos = vInfo.nMax - vInfo.nPage;
int iScroNum= 5;//Òƶ¯µÄ
//Ê×ÏÈÅжÏÊÇ·ñÒѾ­µ½ÁË×²¿
if (iPos <= 0)
{
;
}
else
{
//Åжϵ±¹ö¶¯ºóÊÇ·ñ³¬³ö¶¥²¿
int iScrollUp = iPos - iScroNum;
if (iScrollUp < 0) //³¬³öÁË
{
ScrollWindow(0,iPos);
vInfo.nPos = vInfo.nMin;
}
else if (iScrollUp >= 0)
{
ScrollWindow(0,iScroNum);
vInfo.nPos -= iScroNum;
}
}
SetScrollInfo(SB_VERT,&vInfo);
}//end up
}
return CDialog::PreTranslateMessage(pMsg);
}

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