filedialogex.cpp

深入浅出Visual C++入门进阶与应用实例 随书光盘 作者 何志丹

// FileDialogEx.cpp : implementation file
//

#include "stdafx.h"
#include "Ex050203.h"
#include "FileDialogEx.h"

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

/////////////////////////////////////////////////////////////////////////////
// CFileDialogEx

IMPLEMENT_DYNAMIC(CFileDialogEx, CFileDialog)

CFileDialogEx::CFileDialogEx(BOOL bOpenFileDialog, LPCTSTR lpszDefExt, LPCTSTR lpszFileName,
		DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pParentWnd) :
		CFileDialog(bOpenFileDialog, lpszDefExt, lpszFileName, dwFlags, lpszFilter, pParentWnd)
{
}

BEGIN_MESSAGE_MAP(CFileDialogEx, CFileDialog)
//{{AFX_MSG_MAP(CFileDialogEx)
	ON_WM_SIZE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
			
BOOL CFileDialogEx::OnInitDialog()
{	
	m_edit.SubclassDlgItem(IDC_FILEINFO, this);//子类化编辑框	
	return CFileDialog::OnInitDialog();
}

int CFileDialogEx::DoModal()
{
	m_ofn.lpTemplateName = MAKEINTRESOURCE(IDD_FILEDIALOG);
	m_ofn.Flags |= OFN_ENABLETEMPLATE;//增加自定义的子对话框
	return CFileDialog::DoModal();
}

void CFileDialogEx::OnFileNameChange()
{
	ShowFileInfo();
}

void CFileDialogEx::OnFolderChange()
{//选择新文件夹
	ShowFileInfo();
}

void CFileDialogEx::OnTypeChange()
{//选择新文件类型
	ShowFileInfo();
}

void CFileDialogEx::ShowFileInfo()
{//显示文件信息
	CString strFileName = GetPathName();
	if(strFileName.IsEmpty())
		return ;
	
	//取得文件大小
	CFileStatus rStatus ;
	CFile::GetStatus(strFileName,rStatus);
	
	CString strInfo ;
	strInfo.Format("当前选中文件是%s\r\n文件大小是%d",strFileName,rStatus.m_size);
	m_edit.SetWindowText(strInfo);
}

void CFileDialogEx::OnSize(UINT nType, int cx, int cy) 
{//对话框移动时,更改编辑框的大小
	CWnd* pDlg = GetParent();
	
	if(NULL != GetSafeHwnd())
	{
		//取得取消按钮右边缘的坐标
		CWnd* pCancel = pDlg->GetDlgItem(IDCANCEL);
		ASSERT(pCancel);
		CRect rcCancel;
		pCancel->GetWindowRect(&rcCancel);
		
		//取得编辑框的坐标
		CRect rEdit;
		m_edit.GetWindowRect(&rEdit);
		rEdit.right = rcCancel.right ;
		
		//移动编辑框坐标
		ScreenToClient(&rEdit);
		m_edit.MoveWindow(&rEdit);
	}
}