C++ Code_ScrollBar

主题

1.  ScrollBar的使用

2.

3.

4.

5.

    

属性

HScrollBar

VScrollBar

直接拖拽1其中任意空间到对话框上面是，你一拖拽滚动条，它立即回到原始位置

    

代码::

/*

在控件上面添加1个HScrollBar和1个Edit控件

*/

//初始化部分添加代码

    // TODO: Add extra initialization
here

    CScrollBar *pScroll=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR1);

    pScroll->SetScrollRange(0, 100);

    pScroll->SetScrollPos(0);

SetDlgItemInt(IDC_EDIT1, 0);

//为对话杠添加1个OnHScroll消息，添加如下代码

void CProject01Dlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)

{

    // TODO: Add your message handler code here and/or
call default

    int iPos=pScrollBar->GetScrollPos();

    switch (nSBCode)

    {

    case SB_LINERIGHT:

            iPos+=1;

            break;

    case SB_LINELEFT:

            iPos-=1;

            break;

    case SB_PAGERIGHT:

            iPos+=10;

            break;

    case SB_PAGELEFT:

            iPos-=10;

            break;

    case SB_THUMBTRACK:

            iPos=nPos;

            break;

    default:

        break;

    }

    if (iPos<0) iPos=0;

    if (iPos>100) iPos=100;

    pScrollBar->SetScrollPos(iPos);

    SetDlgItemInt(IDC_EDIT1, iPos);

    

    CDialog::OnHScroll(nSBCode, nPos, pScrollBar);

}

//为Edit1添加OnChange消息

void CProject01Dlg::OnChangeEdit1()

{

    // TODO: If this is a RICHEDIT control, the control
will not

    // send this notification unless you override the
CDialog::OnInitDialog()

    // function and call
CRichEditCtrl().SetEventMask()

    // with the ENM_CHANGE flag ORed into the
mask.

    CString STR;

    GetDlgItemText(IDC_EDIT1, STR);

    STR.TrimLeft();

    STR.TrimRight();

    INT iPos=0;

    if (STR!="-"
&& STR!="")

    {

        if
(!UpdateData())

        {

            return;

        }

        iPos=m_nEdt1;

    }

    CScrollBar *pScroll=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR1);

    pScroll->SetScrollPos(iPos);

    

    // TODO: Add your control notification handler code
here

    

}

 

    

效果图：

来自为知笔记(Wiz)

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