FolderDialog 类

王朝other·作者佚名  2006-01-10
窄屏简体版  字體: |||超大  

----------------------FolderDialog.h----------------------

#pragma once

class CFolderDialog

{

private:

BROWSEINFO m_bi;

TCHAR m_cOpendFolder[260];

public:

CString m_sDialogTitle;

CString m_sInitialFolder;

CString m_sOpendFolder;

CFolderDialog(DWORD dwFlags = NULL, CWnd* pParentWnd = NULL);

~CFolderDialog(void);

void CallbackFunction(HWND hWnd, UINT uMsg, LPARAM lParam);

int DoModal();

};

----------------------FolderDialog.cpp----------------------

#include "StdAfx.h"

#include "FolderDialog.h"

#include "Shlwapi.h"

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

{

CFolderDialog* pFd = (CFolderDialog*)lpData;

pFd->CallbackFunction(hWnd, uMsg, lParam);

return 0;

}

void CFolderDialog::CallbackFunction(HWND hWnd, UINT uMsg, LPARAM lParam)

{

switch(uMsg)

{

case BFFM_INITIALIZED:

if( PathFileExists(m_sInitialFolder) )

{

lstrcpy(m_cOpendFolder, (LPTSTR)(LPCTSTR)m_sInitialFolder);

SendMessage(hWnd, BFFM_SETSELECTION, TRUE, (LPARAM)m_cOpendFolder);

if( (m_sInitialFolder[m_sInitialFolder.GetLength()-1]) != _TEXT('\\') )

{

m_sInitialFolder += _TEXT("\\");

}

CString sTempStr;

if (m_sInitialFolder.GetLength() <= 45)

{

sTempStr = m_sInitialFolder;

}

else

{

sTempStr = m_sInitialFolder.Left(25) + _TEXT("...") + m_sInitialFolder.Right(15);

}

SendMessage(hWnd, BFFM_SETSTATUSTEXT, 0, (LPARAM)(LPCTSTR)sTempStr);

}

break;

case BFFM_SELCHANGED:

if( SHGetPathFromIDList((LPITEMIDLIST)lParam, m_cOpendFolder) )

{

m_sOpendFolder = m_cOpendFolder;

if( (m_sOpendFolder[m_sOpendFolder.GetLength()-1]) != _TEXT('\\') )

{

m_sOpendFolder += _TEXT("\\");

}

CString sTempStr;

if (m_sOpendFolder.GetLength() <= 45)

{

sTempStr = m_sOpendFolder;

}

else

{

sTempStr = m_sOpendFolder.Left(25) + _TEXT("...") + m_sOpendFolder.Right(15);

}

SendMessage(hWnd, BFFM_SETSTATUSTEXT, 0, (LPARAM)(LPCTSTR)sTempStr);

}

break;

}

}

CFolderDialog::CFolderDialog(DWORD dwFlags, CWnd* pParentWnd)

{

memset(&m_bi, 0, sizeof(BROWSEINFO));

if (pParentWnd == NULL)

{

m_bi.hwndOwner = 0;

}

else

{

m_bi.hwndOwner = pParentWnd->GetSafeHwnd();

}

m_bi.pidlRoot = NULL;

m_bi.pszDisplayName = m_cOpendFolder;

m_bi.ulFlags = dwFlags | BIF_STATUSTEXT;

m_bi.lpfn = BrowseCallbackProc;

m_bi.lParam = (LPARAM)this;

}

CFolderDialog::~CFolderDialog(void)

{

}

int CFolderDialog::DoModal()

{

int nReturn = IDOK;

LPITEMIDLIST pidl;

m_bi.lpszTitle = m_sDialogTitle;

pidl = SHBrowseForFolder(&m_bi);

if ( pidl&&SHGetPathFromIDList(pidl, m_cOpendFolder) )

{

m_sOpendFolder = m_cOpendFolder;

if( (m_sOpendFolder[m_sOpendFolder.GetLength()-1]) != _TEXT('\\') )

{

m_sOpendFolder += _TEXT("\\");

}

nReturn = IDOK;

}

else

{

nReturn = IDCANCEL;

}

if(pidl)

{

free(pidl);

}

return nReturn;

}

 
 
 
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