basecombobox.cpp

一个VC++写的商品库存管理系统

// BaseComboBox.cpp : implementation file
//

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

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

CBaseComboBox::CBaseComboBox()
{
}

CBaseComboBox::~CBaseComboBox()
{
}


BEGIN_MESSAGE_MAP(CBaseComboBox, CComboBox)
	//{{AFX_MSG_MAP(CBaseComboBox)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBaseComboBox message handlers

BOOL CBaseComboBox::PreTranslateMessage(MSG* pMsg) 
{
	if(pMsg->message==WM_KEYDOWN && pMsg->wParam==13)
		pMsg->wParam=9;		
	return CComboBox::PreTranslateMessage(pMsg);
}

bool CBaseComboBox::SetRecordset(_RecordsetPtr rRst, CString sField)
{
	CString sText;
	bool returnvalue;
	this->rst=rRst;
	this->m_Field=sField;
	if(theApp.GetRecordCount(rst)>0)
	{
		for(int i=0;i<theApp.GetRecordCount(rst);i++)
		{
			rst->MoveFirst();
			rst->Move(i);
			try{
			sText=(char*)(_bstr_t)rst->GetCollect((_bstr_t)sField);
			this->AddString(sText);
			}
			catch(...)
			{
				returnvalue=false;
				goto err;
			}
		}
		returnvalue=true;
	}
	else
		returnvalue=false;
err:	return returnvalue;
}



void CBaseComboBox::UpDating()
{
	CString sText;
	this->ResetContent();
	if(theApp.GetRecordCount(rst)>0)
	{
		for(int i=0;i<theApp.GetRecordCount(rst);i++)
		{
			rst->MoveFirst();
			rst->Move(i);
			try{
			sText=(char*)(_bstr_t)rst->GetCollect((_bstr_t)m_Field);
			this->AddString(sText);
			}
			catch(...)
			{
				return;
			}
		}
	}
}

BOOL CBaseComboBox::DestroyWindow() 
{
	rst->Close();	
	return CComboBox::DestroyWindow();
}