mycombobox.cpp

背单词程序

// MyComboBox.cpp : implementation file
//

#include "stdafx.h"
#include "EngRecite.h"
#include "MyComboBox.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyComboBox

CMyComboBox::CMyComboBox()
{
	m_bIsBack = FALSE;
}

CMyComboBox::~CMyComboBox()
{
}


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

/////////////////////////////////////////////////////////////////////////////
// CMyComboBox message handlers

BOOL CMyComboBox::PreTranslateMessage(MSG* pMsg) 
{
	if (pMsg->message == WM_KEYDOWN)
	{
		int nVirtKey = (int) pMsg->wParam;
		if (nVirtKey == VK_DELETE || nVirtKey == VK_BACK)

		if (nVirtKey == VK_BACK || nVirtKey == VK_DELETE)
		{
			CString szText;
			GetWindowText(szText);

			m_bIsBack = szText.GetLength() == 0 ? FALSE : TRUE;
		}
	}
	
	return CComboBox::PreTranslateMessage(pMsg);
}