vc中文件對話框和文件夾對話框的使用

一。打開文件夾：

1。CFileDialog實現

CFileDialog hFileDlg(true,NULL ,
NULL,
OFN_FILEMUSTEXIST | OFN_READONLY | OFN_PATHMUSTEXIST,
TEXT("驅動文件 (*.sys)|*.sys|所有文件(*.*)|*.*|"),
NULL);
if(hFileDlg.DoModal() == IDOK)
{
m_path = hFileDlg.GetPathName();
UpdateData(FALSE);
}

2。API實現

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 = "音頻文件\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，只不過將“ CFileDialog hFileDlg(true,NULL ”改爲“ CFileDialog hFileDlg(false,NULL ”，或者將GetOpenFileNameA改爲GetSaveFileNameA，即可。

三、瀏覽文件夾對話框

//回調函數
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]; //用來存儲路徑的字符串
CString strPath = "";
BROWSEINFO bInfo;
GetModuleFileName(NULL,chPath,MAX_PATH);
strPath=chPath;
ZeroMemory(&bInfo, sizeof(bInfo));
bInfo.hwndOwner = m_hWnd;
bInfo.lpszTitle = _T("請選擇路徑: "); 
bInfo.ulFlags  = BIF_RETURNONLYFSDIRS|BIF_EDITBOX;
bInfo.lpfn  = BrowseCallbackProc;
bInfo.lParam  = (LPARAM)strPath.GetBuffer(strPath.GetLength());

LPITEMIDLIST lpDlist; //用來保存返回信息的IDList
lpDlist = SHBrowseForFolder(&bInfo) ; //顯示選擇對話框
if(lpDlist != NULL)  //用戶按了確定按鈕
{
SHGetPathFromIDList(lpDlist, chPath);//把項目標識列表轉化成字符串
strPath = chPath; //將TCHAR類型的字符串轉換爲CString類型的字符串
m_save_path=strPath;
UpdateData(FALSE);
}