computview.cpp

一个简单的个人所得税计算器,可以编辑税率表和所在地列表.

// ComputView.cpp : implementation file
//

#include "stdafx.h"
#include "pitc.h"
#include "ComputView.h"
#include "ListCtrlArea.h"
#include "MainFrm.h"
#include "math.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CComputView

IMPLEMENT_DYNCREATE(CComputView, CFormView)

CComputView::CComputView()
	: CFormView(CComputView::IDD)
{
	//{{AFX_DATA_INIT(CComputView)
	m_strArea = _T("");
	m_dStart = 0.0;
	m_dTotal = 0.0;
	m_dTax = 0.0;
	m_dDeduct = 0.0;
	m_dAll = 0.0;
	m_dGet = 0.0;
	//}}AFX_DATA_INIT
}

CComputView::~CComputView()
{
}

void CComputView::DoDataExchange(CDataExchange* pDX)
{
	CFormView::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CComputView)
	DDX_Control(pDX, IDC_EDIT_TATOL, m_wndTatol);
	DDX_Text(pDX, IDC_EDIT_AREA, m_strArea);
	DDX_Text(pDX, IDC_EDIT_START, m_dStart);
	DDX_Text(pDX, IDC_EDIT_TOTAL, m_dTotal);
	DDX_Text(pDX, IDC_EDIT_TAX, m_dTax);
	DDX_Text(pDX, IDC_EDIT_DEDUCT, m_dDeduct);
	DDX_Text(pDX, IDC_EDIT_ALL, m_dAll);
	DDX_Text(pDX, IDC_EDIT_GET, m_dGet);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CComputView, CFormView)
	//{{AFX_MSG_MAP(CComputView)
	ON_WM_CREATE()
	ON_EN_CHANGE(IDC_EDIT_ALL, OnChangeEditAll)
	ON_EN_CHANGE(IDC_EDIT_DEDUCT, OnChangeEditDeduct)
	//}}AFX_MSG_MAP
    ON_MESSAGE(WM_UPDATE_AREA,OnUpdateArea)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CComputView diagnostics

#ifdef _DEBUG
void CComputView::AssertValid() const
{
	CFormView::AssertValid();
}

void CComputView::Dump(CDumpContext& dc) const
{
	CFormView::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CComputView message handlers

int CComputView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CFormView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	
	return 0;
}

//响应自定义的消息,用来更新显示,有点麻烦,先不用它
void CComputView::OnUpdateArea(WPARAM wParam,LPARAM lParam)
{
	//AfxMessageBox("receive!");
    AREA_T *area_t;
	area_t=(AREA_T*)lParam;
	m_strArea=area_t->area;
	m_dStart=area_t->start;
	//UpdateData(FALSE);
	GetDlgItem(IDC_EDIT_AREA)->SetWindowText(m_strArea);
	CString str;
	str.Format("%.2f",m_dStart);
    GetDlgItem(IDC_EDIT_START)->SetWindowText(str);
}


void CComputView::Comput()
{
	UpdateData(TRUE);
	CString temp;
	if(m_strArea=="")
	{
		AfxMessageBox("请选择所在地!");
		GetDlgItem(IDC_EDIT_AREA)->SetFocus();
		return;
	}

	if(m_dStart<0)
	{
		AfxMessageBox("起征点应>=0!");
		GetDlgItem(IDC_EDIT_FROM)->SetFocus();
		return;
	}

	if(m_dAll<0)
	{
		AfxMessageBox("代扣前工资薪金总额应>=0!");
		GetDlgItem(IDC_EDIT_ALL)->SetFocus();
		return;
	}
	
	if(m_dDeduct<0)
	{
		AfxMessageBox("代扣金额应>=0!");
		GetDlgItem(IDC_EDIT_DEDUCT)->SetFocus();
		return;
	}

	if(m_dTotal<0)
	{
		AfxMessageBox("税前工资薪金总额应>=0!");
		GetDlgItem(IDC_EDIT_TOTAL)->SetFocus();
		return;
	}

	
	double dAll;
	dAll=((CPITCApp*)AfxGetApp())->Sswr(m_dAll,2);//保留2位小数

	double dDeduct;
	dDeduct=((CPITCApp*)AfxGetApp())->Sswr(m_dDeduct,2);//保留2位小数

	double dTotal;
	m_dTotal=dAll - dDeduct;
    dTotal=((CPITCApp*)AfxGetApp())->Sswr(m_dTotal,2);
	temp.Format("%.2f",dTotal);
	GetDlgItem(IDC_EDIT_TOTAL)->SetWindowText(temp);

	double dForTax,dStart;
	dStart=((CPITCApp*)AfxGetApp())->Sswr(m_dStart,2);
	dForTax=dTotal  - dStart;//应纳税所得额
	dForTax=((CPITCApp*)AfxGetApp())->Sswr(dForTax,2);
    m_dTax=0;
    if(dForTax<=0)
	{
		GetDlgItem(IDC_EDIT_TAX)->SetWindowText("0.00");
		return;
	}

    CMainFrame *pMain;
	pMain=(CMainFrame*)(AfxGetApp()->m_pMainWnd);
	CListCtrlCess *pListCtrlCess;
    pListCtrlCess=&(pMain->m_pConfigViewCess->m_wndListCtrlCess);
	int count;
	CString strFrom,strTo;

	if(!(pMain->m_pConfigDoc->Exam()))//通过检查后才能计算
	{
		return;
	}

    double dCess,dSub;
	int i=0;
	count=pMain->m_pConfigDoc->m_arrFrom.GetSize();
	while(i<count && dForTax>pMain->m_pConfigDoc->m_arrFrom.GetAt(i))
	{
		i++;
	}
	
	dCess=(pMain->m_pConfigDoc->m_arrCess.GetAt(i-1))*0.01;
	dSub=pMain->m_pConfigDoc->m_arrSub.GetAt(i-1);
	//temp.Format("dTax=%f,dForTax=%f,dSub=%f",dCess,dForTax,dSub);
	//AfxMessageBox(temp);
	double dTax;
	m_dTax=dForTax * dCess - dSub;
	dTax=((CPITCApp*)AfxGetApp())->Sswr(m_dTax,2);////保留2位小数
	temp.Format("%.2f",dTax);
	GetDlgItem(IDC_EDIT_TAX)->SetWindowText(temp);
	
	m_dGet=dTotal - dTax;
	m_dGet=((CPITCApp*)AfxGetApp())->Sswr(m_dGet,2);////保留2位小数
	temp.Format("%.2f",m_dGet);
	GetDlgItem(IDC_EDIT_GET)->SetWindowText(temp);
	///////////////

}

BOOL CComputView::PreTranslateMessage(MSG* pMsg) 
{
	// TODO: Add your specialized code here and/or call the base class
	if(pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN )
	{
		CMainFrame *pMainFrame;
        pMainFrame=(CMainFrame*)(AfxGetApp()->m_pMainWnd);
		
    ////
		CString temp;
	    CWnd *pWnd=this->GetFocus();
	    if (pWnd->GetDlgCtrlID()==IDC_EDIT_ALL)
		{
		    //AfxMessageBox("OK!");
			
	            ::SendMessage(pMainFrame->GetSafeHwnd(),WM_COMMAND,ID_COMPUT,NULL);
                GetDlgItem(IDC_EDIT_DEDUCT)->SetFocus();
			
		}
		if(pWnd==GetDlgItem(IDC_EDIT_DEDUCT))
		{
		    //AfxMessageBox("OK!");
		
			    ::SendMessage(pMainFrame->GetSafeHwnd(),WM_COMMAND,ID_COMPUT,NULL);
			    GetDlgItem(IDC_EDIT_GET)->SetFocus();
			
		}
	}

	return CFormView::PreTranslateMessage(pMsg);
}


void CComputView::UpdateDisplay()//更新显示
{
	CMainFrame *pMain;
	CListCtrlArea *pList;
	pMain=(CMainFrame*)(AfxGetApp()->m_pMainWnd);
	pList=(CListCtrlArea *)(&(pMain->m_pConfigViewArea->m_wndListCtrlArea));
	int count;
	count=pList->GetSelectedCount();
	if(count==0)
	{
		m_strArea="";
		m_dStart=0.0;
		m_dTax=0.0;	
		UpdateData(FALSE);
	}
	else
	{
		int m;
	    POSITION pos=pList->GetFirstSelectedItemPosition();
		m=pList->GetNextSelectedItem(pos);
		m_strArea=pList->GetItemText(m,0);
		m_dStart=atof(pList->GetItemText(m,1));
		m_dTax=0.0;	
	}
	CString temp;
	GetDlgItem(IDC_EDIT_AREA)->SetWindowText(m_strArea);
	temp.Format("%.2f",m_dStart);
    GetDlgItem(IDC_EDIT_START)->SetWindowText(temp);
	GetDlgItem(IDC_EDIT_TAX)->SetWindowText("0.00");
	GetDlgItem(IDC_EDIT_GET)->SetWindowText("0.00");

}

void CComputView::OnInitialUpdate() 
{
	CFormView::OnInitialUpdate();
	
	// TODO: Add your specialized code here and/or call the base class
	GetDlgItem(IDC_EDIT_ALL)->SetWindowText("0.00");
	GetDlgItem(IDC_EDIT_AREA)->SetWindowText("");
    GetDlgItem(IDC_EDIT_START)->SetWindowText("0.00");
	GetDlgItem(IDC_EDIT_TATOL)->SetWindowText("0.00");
	GetDlgItem(IDC_EDIT_DEDUCT)->SetWindowText("0.00");
	GetDlgItem(IDC_EDIT_TAX)->SetWindowText("0.00");
	GetDlgItem(IDC_EDIT_GET)->SetWindowText("0.00");
}

void CComputView::OnChangeEditAll() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CFormView::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);

//	if(Examine(m_dAll,2)!=TRUE)
		//return;
	CString temp;
	double dAll,dDeduct,dTotal;
	GetDlgItem(IDC_EDIT_ALL)->GetWindowText(temp);
	
	dAll=atof(temp);
	dAll=((CPITCApp*)AfxGetApp())->Sswr(dAll,2);
	//temp.Format("%.2f",dAll);
	//dAll=atof(temp);//取2位小数

	
	GetDlgItem(IDC_EDIT_DEDUCT)->GetWindowText(temp);
	
	dDeduct=atof(temp);
	dDeduct=((CPITCApp*)AfxGetApp())->Sswr(dDeduct,2);
	//temp.Format("%.2f",dDeduct);
	//dDeduct=atof(temp);
    
	dTotal=dAll - dDeduct;
	dTotal=((CPITCApp*)AfxGetApp())->Sswr(dTotal,2);
	temp.Format("%.2f",dTotal);
    GetDlgItem(IDC_EDIT_TOTAL)->SetWindowText(temp);
	
}

void CComputView::OnChangeEditDeduct() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CFormView::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
    CString temp;
	double dAll,dDeduct,dTotal;
	GetDlgItem(IDC_EDIT_ALL)->GetWindowText(temp);
	dAll=atof(temp);
	temp.Format("%.2f",dAll);
	dAll=atof(temp);//取2位小数

	GetDlgItem(IDC_EDIT_DEDUCT)->GetWindowText(temp);
	dDeduct=atof(temp);
	temp.Format("%.2f",dDeduct);
	dDeduct=atof(temp);
    
	dTotal=dAll - dDeduct;
	temp.Format("%.2f",dTotal);
    GetDlgItem(IDC_EDIT_TOTAL)->SetWindowText(temp);
	
}

//检查一个double是否满足小于n位小数
BOOL CComputView::Examine(double d,int n)
{
	CString str;
	str.Format("%f",d);
	int len;
	len=str.GetLength();
	if(str.Find(".")==-1)
	{
		return TRUE;
	}
	

	int i;
	for(i=1;i<=n;i++)
	{
	    if(str.Mid(len-i,1)==".")
		{
		    return TRUE;
		}
	}

	return FALSE;
	

}