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

///////////////////////////////////////////////////////////////////////////  
// BrowseDirDialog.cpp  
//////////////////////////////////////////////////////////////////////  
 
#include "stdafx.h"  
#include "BrowseDirDialog.h"  
#include "shlobj.h"  
#ifdef _DEBUG  
#undef THIS_FILE  
static char THIS_FILE[]=__FILE__;  
#define new DEBUG_NEW  
#endif  
 
//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;  
}  
//构造函数  
CBrowseDirDialog::CBrowseDirDialog()  
{  
}  
 
//析构函数  
CBrowseDirDialog::~CBrowseDirDialog()  
{  
}  
 
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()) ? "打开":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;  
}