对话框子窗口的滚动

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父类 void CDlgXXXX::InitUIRes(CString strCatCode) {     if (NULL == m_pDlgSub_)     {         m_pDlgSub_ = new CDlgFilterSub(this);         m_pDlgSub_->Create(CDlgFilterSub::IDD, this);     }           m_pDlgSub_->InitUI(strCatCode);       CRect rtClient;     GetWindowRect(&rtClient);       CRect rtDlg;     m_pDlgSub_->GetClientRect(&rtDlg);     rtDlg.MoveToY(40);     rtDlg.left = 0;     rtDlg.right = rtClient.Width();     m_pDlgSub_->MoveWindow(rtDlg);       m_pDlgSub_->GetWindowRect(&rtDlg);     rtClient.bottom = rtDlg.bottom + 10;     MoveWindow(rtClient);       if (!m_pDlgSub_->IsWindowVisible())     {         m_pDlgSub_->ShowWindow(SW_SHOW);     } }

　　子窗口

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void CDlgFilterSub::InitUI(CString strCatCode) {     。。。。动态添加按钮rtCtrl最后一排控件的位置}

CRect rtClient;
GetClientRect(rtClient);

SCROLLINFO si;
si.cbSize = sizeof(si);
GetScrollInfo(SB_VERT, &si);
si.nMax = max(rtCtrl.bottom + SPACE, rtClient.bottom);
si.nPos = 0;
SetScrollInfo(SB_VERT, &si);

static int iHeight = rtClient.bottom;
if (rtClient.bottom < rtCtrl.bottom + SPACE)
{
rtClient.bottom = iHeight;
}
else
{
rtClient.bottom = rtCtrl.bottom + SPACE;
}
MoveWindow(rtClient);

　　子窗口的初始化

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BOOL CDlgFilterSub::OnInitDialog() {     CBCGPDialog::OnInitDialog();     COLORREF bgColor = RGB(248, 248, 248);     SetBackgroundColor(bgColor);       CRect rtClient;     GetClientRect(rtClient);     SCROLLINFO si;     si.cbSize = sizeof(SCROLLINFO);     si.fMask = SIF_ALL;     si.nPos = 0;     si.nMin = 0;     si.nMax = rtClient.bottom;     SetScrollInfo(SB_VERT, &si);       return TRUE; }

　　

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void CDlgFilterSub::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) {     SCROLLINFO si;     si.cbSize = sizeof(si);     si.fMask = SIF_ALL;     GetScrollInfo(SB_VERT, &si);     INT nVscroll = si.nPos;     switch(nSBCode)     {      case SB_LINEDOWN:         {             nVscroll += 20;             if (nVscroll > (si.nMax - si.nMin - si.nPage ))             {                 nVscroll = si.nMax - si.nMin - si.nPage;             }         }         break;     case SB_LINEUP:         {             nVscroll -= 20;             if (nVscroll < si.nMin)             {                 nVscroll = 0;             }         }         break;     case SB_PAGEDOWN:         {             nVscroll += si.nPage;             if (nVscroll > (si.nMax - si.nMin - si.nPage))             {                 nVscroll = si.nMax - si.nMin - si.nPage;             }         }         break;     case SB_PAGEUP:         {             nVscroll -= si.nPage;             if (nVscroll < si.nMin)             {                 nVscroll = 0;              }         }         break;     case SB_THUMBTRACK:         {             nVscroll = nPos;         }         break;     }       if (si.nPos != nVscroll)     {         int yAmount = -(nVscroll - si.nPos);         ScrollWindow(0, yAmount, NULL,NULL);     }       si.nPos = nVscroll;     SetScrollInfo(SB_VERT, &si);       CBCGPDialog::OnVScroll(nSBCode, nPos, pScrollBar); }

　　

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1	ON_WM_VSCROLL()

　　

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1	afx_msg void OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);