browsedirdialog.cpp

成绩管理系统

// BrowseDirDialog.cpp: implementation of the CBrowseDirDialog class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "STUGRADE.h"
#include "BrowseDirDialog.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()) ? "open dir":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;
}