MFC实现打开、保存文件对话框和浏览文件夹对话框

MFC实现打开、保存文件对话框和浏览文件夹对话框

一、打开文件夹：

1、CFileDialog实现

CFileDialog hFileDlg(TRUE,NULL,NULL,OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST|OFN_READONLY,

       TEXT("支持的图像文件 (*.jpg;*.gif;*.bmp;...)|*.jpg;*.gif;*.bmp|专用Tiff图像文件(*.tiff;*.tif)|*.tiff;*.tif|所有文件(*.*)|*.*||"),NULL);

hFileDlg.m_ofn.nFilterIndex=1;

hFileDlg.m_ofn.hwndOwner=m_hWnd;

hFileDlg.m_ofn.lStructSize=sizeof(OPENFILENAME);

hFileDlg.m_ofn.lpstrTitle=TEXT("打开图像文件...\0");

hFileDlg.m_ofn.nMaxFile=MAX_PATH;

if(hFileDlg.DoModal() == IDOK)

{

m_path = hFileDlg.GetPathName();

UpdateData(FALSE);

}

2、API实现

OPENFILENAMEA ofn;       

char szFile[260];      

ZeroMemory(&ofn, sizeof(ofn));

ofn.lStructSize       = sizeof(ofn);

ofn.hwndOwner         = NULL;

ofn.lpstrFile         = szFile;

ofn.lpstrFile[0]      = '\0';

ofn.nMaxFile          = sizeof(szFile);

ofn.lpstrFilter       = "音频文件\0*.wma\0";

ofn.nFilterIndex      = 1;

ofn.lpstrFileTitle    = NULL;

ofn.nMaxFileTitle     = 0;

ofn.lpstrInitialDir   = NULL;

ofn.Flags = 0;

if (GetOpenFileNameA(&ofn)==FALSE) 

{

return S_FALSE;

}

CString c_save_path=ofn.lpstrFile;

二、保存文件

同上，只不过将

CFileDialog hFileDlg(true,NULL 改为 CFileDialog hFileDlg(false,NULL，

或者将GetOpenFileNameA改为GetSaveFileNameA，即可。

三、浏览文件夹对话框

//回调函数

int CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lParam, LPARAM lpData)

{

if(uMsg==BFFM_SELCHANGED||uMsg==BFFM_INITIALIZED)

{ 

     if(uMsg==BFFM_INITIALIZED)

     {

       ::SendMessage(hwnd,BFFM_SETSELECTION,TRUE,LPARAM(lpData));

     }

}

return 0;

}

TCHAR chPath[255]; //用来存储路径的字符串

CString strPath     = "";

BROWSEINFO bInfo;

GetModuleFileName(NULL,chPath,MAX_PATH);

strPath             =chPath;

ZeroMemory(&bInfo, sizeof(bInfo));

bInfo.hwndOwner     = m_hWnd;

bInfo.lpszTitle     = _T("请选择路径: ");     

bInfo.ulFlags       = BIF_RETURNONLYFSDIRS|BIF_EDITBOX;

bInfo.lpfn          = BrowseCallbackProc;

bInfo.lParam        = (LPARAM)strPath.GetBuffer(strPath.GetLength());

LPITEMIDLIST lpDlist; //用来保存返回信息的IDList

lpDlist = SHBrowseForFolder(&bInfo) ; //显示选择对话框

if(lpDlist != NULL) //用户按了确定按钮

{

SHGetPathFromIDList(lpDlist, chPath);//把项目标识列表转化成字符串

strPath = chPath; //将TCHAR类型的字符串转换为CString类型的字符串

m_save_path=strPath;

UpdateData(FALSE);

}