customdlg.cpp

来自「MFC程序开发参考大全 【明日科技】宋坤 刘锐宁 李伟明 【丛 书 名】」· C++ 代码 · 共 82 行

// CustomDlg.cpp : implementation file
//

#include "stdafx.h"
#include "BmpFile.h"
#include "CustomDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CCustomDlg

IMPLEMENT_DYNAMIC(CCustomDlg, CFileDialog)

CCustomDlg::CCustomDlg(BOOL bOpenFileDialog, LPCTSTR lpszDefExt, LPCTSTR lpszFileName,
		DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pParentWnd) :
		CFileDialog(bOpenFileDialog, lpszDefExt, lpszFileName, dwFlags, lpszFilter, pParentWnd)
{
	m_ofn.Flags = (OFN_EXPLORER| OFN_ENABLETEMPLATE| OFN_ENABLEHOOK);
	m_ofn.lpTemplateName = MAKEINTRESOURCE(IDD_DIALOG1);
}


BEGIN_MESSAGE_MAP(CCustomDlg, CFileDialog)
	//{{AFX_MSG_MAP(CCustomDlg)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


void CCustomDlg::OnFileNameChange()
{
	CFileDialog::OnFileNameChange();
	
	CString exp;
	exp=GetFileExt();
	exp.MakeUpper(); //在比较扩展名时不区分大小写
	if(exp == "BMP") //显示位图
	{
		m_bitmap.SetIcon(NULL);
		m_bitmap.ModifyStyle(SS_ICON,SS_BITMAP);
		m_bitmap.SetBitmap((HBITMAP)LoadImage(NULL,GetPathName(),
			IMAGE_BITMAP,100,100,LR_LOADFROMFILE));

		CFile file;
	if(!file.Open(GetPathName(),CFile::modeRead) )
		return;

	BITMAPFILEHEADER bmfHeader;
	//读位图文件头信息
	if(file.Read((LPSTR)&bmfHeader,sizeof(bmfHeader)) != sizeof(bmfHeader))
		return;

	//读位图头信息
	BITMAPINFOHEADER bmiHeader; 
	if (file.Read((LPSTR)&bmiHeader, sizeof(bmiHeader)) !=sizeof(bmiHeader))
		return ;
	//获得大小信息，并显示
	int bmWidth = bmiHeader.biWidth;
	int bmHeight = bmiHeader.biHeight;
	CString  swidth,sheight;
	swidth.Format("宽度：%d",bmWidth);
	sheight.Format("高度：%d",bmWidth);
	m_width.SetWindowText(swidth);
	m_height.SetWindowText(sheight);
	}
}

BOOL CCustomDlg::OnInitDialog() 
{
	CFileDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	m_bitmap.SubclassDlgItem(IDC_STATIC1,this);	
	m_width.SubclassDlgItem(IDC_STATIC2,this);
	m_height.SubclassDlgItem(IDC_STATIC3,this);
	return TRUE; 
}