MFC 利用Spin控件增减编辑框控件数值

来源：互联网发布：简单的sql注入编辑：程序博客网时间：2024/06/08 06:49

这两天要做一个对话框对数据进行设置，里面需要用到Spin控件增减Edit button控件里面的数值，网上查找了一个方法，但是只能实现整数的增减，于是另外找了点资料，这里记录一下：

先按照图片布局添加空间，为Edit控件添加CString类型的值作为变量，为Spin添加空间变量，将Spin控件Auto Hscoll，visible，border属性设置为true

这是添加的控件变量：

private:CString m_strEditLine;CString m_strEditPoint;CSpinButtonCtrl m_SpinLine;CSpinButtonCtrl m_SpinPoint;int m_iLeastPoint;//这个是保存Edit空间里面的值为数字double m_dLeastDisLine;<span style="font-family: Arial, Helvetica, sans-serif;">//这个是保存Edit空间里面的值为数字</span>

然后添加下面代码：

void CDlgWFExportSet::OnBnClickedOk(){// TODO: Add your control notification handler code hereUpdateData();if (m_strEditPoint.IsEmpty() || m_strEditLine.IsEmpty()){AfxMessageBox(_T("参数设置不正确！"));return;}m_iLeastPoint = _tstof(m_strEditPoint);m_dLeastDisLine = _tstof(m_strEditLine);CDialogEx::OnOK();}BOOL CDlgWFExportSet::PreTranslateMessage(MSG* pMsg){// TODO: Add your specialized code here and/or call the base classCEdit* editTop = (CEdit*)GetDlgItem(IDC_EDIT_LINE);CEdit* editBottom = (CEdit*)GetDlgItem(IDC_EDIT_POINT);if((GetFocus()==editTop || GetFocus()==editBottom) && (pMsg->message == WM_CHAR)){if(pMsg->wParam<='9' && pMsg->wParam>='0' || pMsg->wParam=='.' || pMsg->wParam == VK_BACK) {return 0;}else{return 1;}}return CDialogEx::PreTranslateMessage(pMsg);}void CDlgWFExportSet::SetEditContent(LPNMUPDOWN pNMUpDown, CString &strEdit){double dStep = 1.00;double dCurValue = _tstof(strEdit);if(pNMUpDown->iDelta == 1)                    // 如果此值为1 , 说明点击了Spin的往下箭头{dCurValue -= dStep;dCurValue = dCurValue<0?0:dCurValue;}else if(pNMUpDown->iDelta == - 1)    // 如果此值为-1 , 说明点击了Spin的往上箭头{dCurValue += dStep;dCurValue = dCurValue<0?0:dCurValue;}strEdit.Format(_T("%.2f"), dCurValue);}void CDlgWFExportSet::OnDeltaposSpinPoint(NMHDR *pNMHDR, LRESULT *pResult){LPNMUPDOWN pNMUpDown = reinterpret_cast<LPNMUPDOWN>(pNMHDR);// TODO: Add your control notification handler code here*pResult = 0;UpdateData();SetEditContent(pNMUpDown, m_strEditPoint);int Pos = m_strEditPoint.Find('.');m_strEditPoint = m_strEditPoint.Left(Pos);UpdateData(FALSE);}void CDlgWFExportSet::OnDeltaposSpinLine(NMHDR *pNMHDR, LRESULT *pResult){LPNMUPDOWN pNMUpDown = reinterpret_cast<LPNMUPDOWN>(pNMHDR);// TODO: Add your control notification handler code here*pResult = 0;UpdateData();SetEditContent(pNMUpDown, m_strEditLine);UpdateData(FALSE);}

这里注意OnDeltaposSpinPoint和OnDeltaposSpinLine的消息映射的形式：

        ON_NOTIFY(UDN_DELTAPOS, IDC_SPIN_POINT, &CDlgWFExportSet::OnDeltaposSpinPoint)ON_NOTIFY(UDN_DELTAPOS, IDC_SPIN_LINE, &CDlgWFExportSet::OnDeltaposSpinLine)

就这样吧，能够实现下面的效果

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