www.pudn.com > MiniFox.rar > BrowseDirDialog.cpp

// BrowseDirDialog.cpp: implementation of the CBrowseDirDialog class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "MiniFox.h" 
#include "BrowseDirDialog.h" 
#include "shlobj.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
////////////////////////////////////////////////////////////////////// 
// Construction/Destruction 
////////////////////////////////////////////////////////////////////// 
 
CBrowseDirDialog::CBrowseDirDialog() 
{ 
 
} 
 
CBrowseDirDialog::~CBrowseDirDialog() 
{ 
 
} 
 
 
//SHBrowseForFolder控件在初始化或选择改变后的回调函数  
static int __stdcall BrowseCtrlCallback(HWND hwnd, UINT uMsg, LPARAM lParam, LPARAM lpData)  
{  
	CBrowseDirDialog* pBrowseDirDialogObj = ( CBrowseDirDialog* )lpData;  
    if ( uMsg == BFFM_INITIALIZED && !pBrowseDirDialogObj->m_SelDir.IsEmpty() )  
	{  
		::SendMessage( hwnd, BFFM_SETSELECTION, TRUE, 
			( LPARAM )( LPCTSTR )( pBrowseDirDialogObj->m_SelDir ) );  
	}  
	else // uMsg == BFFM_SELCHANGED  
	{  
	}  
    return 0;  
}  
 
//////////////////////////////////////////////////////////////////////////////////////// 
/// 
int CBrowseDirDialog::DoBrowse()  
{  
	LPMALLOC pMalloc;  
	if (SHGetMalloc (&pMalloc)!= NOERROR)  
	{  
		return 0;  
	}  
    BROWSEINFO bInfo;  
    LPITEMIDLIST pidl;  
    ZeroMemory ( (PVOID) &bInfo,sizeof (BROWSEINFO));  
 
    if (!m_InitDir.IsEmpty ()) 
	{  
		OLECHAR olePath[MAX_PATH];  
        ULONG chEaten;  
        ULONG dwAttributes;  
        HRESULT hr;  
        LPSHELLFOLDER pDesktopFolder;  
        if (SUCCEEDED(SHGetDesktopFolder(&pDesktopFolder)))  
		{  
			MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED, 
				m_InitDir.GetBuffer(MAX_PATH), 
				-1, olePath, MAX_PATH); 
 
            m_InitDir.ReleaseBuffer (-1);   
 
 
           //转换路径为ITEMLIST  
            hr = pDesktopFolder->ParseDisplayName( NULL, NULL, olePath, 
				&chEaten, &pidl, &dwAttributes);  
            if ( FAILED(hr) )  
			{  
				pMalloc ->Free ( pidl );  
				pMalloc ->Release ();  
				return 0;  
			}  
            bInfo.pidlRoot = pidl;  
		}  
	}   
 
	bInfo.hwndOwner = NULL;  
	bInfo.pszDisplayName = m_Path.GetBuffer ( MAX_PATH );  
	bInfo.lpszTitle = ( m_Title.IsEmpty() ) ? "open" : m_Title;  
	bInfo.ulFlags = BIF_RETURNFSANCESTORS | BIF_RETURNONLYFSDIRS;  
	bInfo.lpfn = BrowseCtrlCallback; //回调函数地址  
	bInfo.lParam = (LPARAM)this;  
 
	if ( ( pidl = ::SHBrowseForFolder( &bInfo ) ) == NULL)  
	{  
		return 0;  
	}  
    m_Path.ReleaseBuffer();  
	m_ImageIndex = bInfo.iImage;   
 
    if ( ::SHGetPathFromIDList( pidl, m_Path.GetBuffer( MAX_PATH ) ) == FALSE )  
	{  
		pMalloc ->Free(pidl); 
		pMalloc ->Release(); 
		return 0; 
	}  
	m_Path.ReleaseBuffer(); 
	pMalloc ->Free( pidl ); 
	pMalloc ->Release(); 
	return 1; 
}