rxgrid.cpp

一个VC++写的商品库存管理系统

// RxGrid.cpp : implementation file
//

#include "stdafx.h"
#include "商品库存管理系统.h"
#include "RxGrid.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
extern _ConnectionPtr cnn;
extern CMyApp theApp;
/////////////////////////////////////////////////////////////////////////////
// CRxGrid

CRxGrid::CRxGrid()
{
	this->bEditing=false;     //处于无编辑状态
	this->IsCanEdit=true;
}

CRxGrid::~CRxGrid()
{
}


BEGIN_MESSAGE_MAP(CRxGrid, CListCtrl)
	//{{AFX_MSG_MAP(CRxGrid)
	ON_WM_LBUTTONDOWN()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CRxGrid::OnLButtonDown(UINT nFlags, CPoint point) 
{
	if (this->IsCanEdit==false)
		return;
	POSITION pos;
	bool bSelected=false;
	//检查是否正处于编辑状态
	if(bEditing==true)
		goto leave;
	//检查是否有单元被选中
	pos=this->GetFirstSelectedItemPosition();
	if(pos)
	{
		//得到被单击的单元
		LVHITTESTINFO testinfo;
		testinfo.pt.x=point.x;
		testinfo.pt.y=point.y;
		testinfo.flags=LVHT_ONITEMLABEL; //单击的必须是标题
		if(this->SubItemHitTest(&testinfo)<0)
			goto leave;
		this->m_Col=testinfo.iSubItem ;    //取得行与列
		this->m_Row=testinfo.iItem;
		//检查该表项是否被选中，没被选中不能编辑
		while(pos)
			if(m_Row==this->GetNextSelectedItem(pos))
			{
				bSelected=true;
				break;
			}
			if(bSelected=false)
				goto leave;
			bEditing=BeginEdit(m_Row,m_Col);
			return;
	}
leave:
	CListCtrl::OnLButtonDown(nFlags, point);
}

int CRxGrid::BeginEdit(int Row ,int Col)
{
	CRect rct;
	if(this->GetSubItemRect(Row,Col,LVIR_LABEL,rct)==false)
		return false;
	int style=WS_CHILD|WS_CLIPSIBLINGS|WS_EX_TOOLWINDOW|WS_BORDER;
	m_Edit.Create(style,rct,this,CELLEDIT);
	m_Edit.ShowWindow(SW_SHOW);
	CString CellText=GetItemText(Row,Col);
	m_Edit.DataBase=Database;
	m_Edit.Field=Field;
	m_Edit.assn=Assn;
	m_Edit.GridParent=this->GetParent();
	try{
	m_Edit.SetWindowText(CellText);
	}
	catch(...)
	{
		goto ResumeNext;
	}
ResumeNext:	m_Edit.SetFocus();
	m_Edit.SetSel(0,-1);
	return true;
}

void CRxGrid::EndEdit(bool bValidate)
{
	if(bValidate)
	{
		CString CellText;
		try{
			m_Edit.GetWindowText(CellText);
			SetItemText(m_Row,m_Col,CellText);
		}
		catch(...)
		{
			goto ResameNext;
		}
	}
ResameNext:	m_Edit.DestroyWindow();
		bEditing=false;
}

int CRxGrid::GetRow()
{
	return this->m_Row;
}
/*
返回当前所在单元格的列标
*/
int CRxGrid::GetCol()
{
	return this->m_Col;
}


BOOL CRxGrid::PreTranslateMessage(MSG* pMsg) 
{
	return CListCtrl::PreTranslateMessage(pMsg);
}
void CRxGrid::SetDataBase(CString sDataBaseName)
{
	this->Database=sDataBaseName;
	this->m_Edit.DataBase=sDataBaseName;
}

void CRxGrid::SetAssn(bool bAssn)
{
	this->Assn=bAssn;
	this->m_Edit.assn=bAssn;
}

void CRxGrid::SetField(CString sField)
{
	this->Field=sField;
	this->m_Edit.Field=sField;
}
void CRxGrid::ClearGrid()
{
	this->Clear();
}