C++文件和文件夹选择

一、MFC版本

WinFileSelectDlg.h

#pragma once
#ifdef WIN32
#include <afxdlgs.h>
#include <dlgs.h>
#include <vector>class WinFileSelectDlg : public CFileDialog
{DECLARE_DYNAMIC(WinFileSelectDlg)public:WinFileSelectDlg(BOOL bOpenFileDialog,LPCTSTR lpszDefExt = NULL,LPCTSTR lpszFileName = NULL,DWORD dwFlags = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT |OFN_EXPLORER & (~OFN_SHOWHELP),LPCTSTR lpszFilter = NULL,CWnd* pParentWnd = NULL);virtual ~WinFileSelectDlg();enum { ID_LISTVIEW = lst2 };//ODM_VIEW_ICONS = 0x7029,enum LISTVIEWCMD{ODM_VIEW_ICONS = 0x7029,ODM_VIEW_LIST = 0x702b,ODM_VIEW_DETAIL = 0x702c,ODM_VIEW_THUMBS = 0x702d,ODM_VIEW_TILES = 0x702e,ODM_VIEW_LARGE_ICONS = 0x704f,};void SetSpecialStrings(wchar_t* sItemName, wchar_t* sSelect){m_strItemName = CString(sItemName);m_strSelect = CString(sSelect);}protected:virtual BOOL OnInitDialog();virtual void OnInitDone();virtual void OnFolderChange();virtual BOOL OnFileNameOK();virtual void OnFileNameChange();static LRESULT CALLBACK WindowProcNew(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);BOOL SetListView(LISTVIEWCMD cmd);DECLARE_MESSAGE_MAP()
private:CString m_strItemName;CString m_strSelect;static CString m_strError;CString m_strLastSelectList;static bool m_bSelectVirtualItem;public:static CString m_strCurrendDirectory;static CStringArray m_SelectedItemList;static WNDPROC m_wndProc;static bool m_bCmb13Changed;static bool IsVirtualItemSelected(){return m_bSelectVirtualItem;}static void SetErrorInfo(wchar_t* sError){m_strError = CString(sError);}static bool HaveSelectSomething(){return m_SelectedItemList.GetCount() > 0;}
};
#endif // WIN32

WinFileSelectDlg.cpp

#ifdef WIN32
#define _AFXDLL
#include <afxcmn.h>
#include "WinFileSelectDlg.h"
#include <shlobj.h>
#include <exception>
#pragma comment( lib, "shell32.lib")
using std::exception;
#pragma warning( push )
#pragma warning( disable : 4311 4312 )#define MAX_PATH_EditControl          4*1024*1024
CString WinFileSelectDlg::m_strCurrendDirectory;
CStringArray WinFileSelectDlg::m_SelectedItemList;
CString WinFileSelectDlg::m_strError;
WNDPROC WinFileSelectDlg::m_wndProc = NULL;
bool WinFileSelectDlg::m_bCmb13Changed = false;
bool WinFileSelectDlg::m_bSelectVirtualItem = false;
IMPLEMENT_DYNAMIC(WinFileSelectDlg, CFileDialog)WinFileSelectDlg::WinFileSelectDlg(BOOL bOpenFileDialog,LPCTSTR lpszDefExt,LPCTSTR lpszFileName,DWORD dwFlags,LPCTSTR lpszFilter,CWnd* pParentWnd):CFileDialog(bOpenFileDialog,lpszDefExt,lpszFileName,dwFlags | OFN_EXPLORER | OFN_HIDEREADONLY & (~OFN_SHOWHELP),lpszFilter,pParentWnd,0, FALSE)
{dwFlags |= (OFN_EXPLORER | OFN_HIDEREADONLY & (~OFN_SHOWHELP));};WinFileSelectDlg::~WinFileSelectDlg()
{};BEGIN_MESSAGE_MAP(WinFileSelectDlg, CFileDialog)
END_MESSAGE_MAP()static BOOL FindFirstFileExists(LPCTSTR lpPath, DWORD dwFilter)
{WIN32_FIND_DATA fd;HANDLE hFind = FindFirstFile(lpPath, &fd);BOOL bFilter = (FALSE == dwFilter) ? TRUE : fd.dwFileAttributes & dwFilter;BOOL RetValue = ((hFind != INVALID_HANDLE_VALUE) && bFilter) ? TRUE : FALSE;FindClose(hFind);return RetValue;
}
/*
* 检查一个  路径 是否存在（绝对路径、相对路径，文件或文件夹均可）
* 存在则返回 1 (TRUE)
*/
static BOOL FilePathExists(LPCTSTR lpPath)
{return FindFirstFileExists(lpPath, FALSE);
}
//判断是否是文件绝对路径，不管是否存在
static BOOL IsFileAbsolutePath(LPCTSTR lpPath)
{CString str(lpPath);int iPos = str.Find(_T(":\\"));if (iPos != 1) return FALSE;return TRUE;
}
static BOOL FileAbsolutePathExists(LPCTSTR lpPath)
{CString str(lpPath);int iPos = str.Find(_T(":\\"));if (iPos != 1) return FALSE;return FindFirstFileExists(lpPath, FALSE);
}/*
[cpp] view plaincopyprint?
* 检查一个 文件夹 是否存在（绝对路径、相对路径均可）
[cpp] view plaincopyprint?
* 存在则返回 1 (TRUE)
[cpp] view plaincopyprint?
*/
static BOOL FolderExists(LPCTSTR lpPath)
{return FindFirstFileExists(lpPath, FILE_ATTRIBUTE_DIRECTORY);
}static BOOL IsLikeDesktopFolder(CString& sSourcFolder)
{CString sFeature1(_T("C:\\Users"));sFeature1 = sFeature1.MakeLower();CString sFeature2(_T("Desktop"));sFeature2 = sFeature2.MakeLower();CString sLowSourceFolder = sSourcFolder.MakeLower();int idx = sLowSourceFolder.Find(sFeature1);if (0 == idx){idx = sLowSourceFolder.Find(sFeature2);if (idx > 0){return TRUE;}}return FALSE;
}
/*
部分文件在c:\user\pubilc\desktop下面，也会显示在桌面上，当遇到这样文件时，还原出实际路径
*/
static BOOL CheckPublicDesktopFile(CString& sSourcFolder, CString& sFileName, CString& sNewFullPath)
{if (IsLikeDesktopFolder(sSourcFolder)){CString sNew = _T("C:\\Users\\Public\\Desktop\\");sNew += sFileName;if (FilePathExists(sNew.GetBuffer())){sNewFullPath = sNew;return TRUE;}}return FALSE;
}
static BOOL CheckPublicDesktopFolder(CString& sSourcFolder, CString& sFolderName, CString& sNewFullPath)
{if (IsLikeDesktopFolder(sSourcFolder)){CString sNew = _T("C:\\Users\\Public\\Desktop\\");sNew += sFolderName;if (FolderExists(sNew.GetBuffer())){sNewFullPath = sNew;return TRUE;}}return FALSE;
}
static BOOL GetKnowLibraryFilesAndFolders(CStringArray& vList)
{const GUID guidlist[4] = { FOLDERID_DocumentsLibrary, FOLDERID_MusicLibrary,FOLDERID_PicturesLibrary, FOLDERID_VideosLibrary };IEnumShellItems* pEnum;IShellItem* pItem;LPWSTR* pDisplayName;HRESULT hr;for (int i = 0; i < 4; i++){hr = SHGetKnownFolderItem(guidlist[i], KF_FLAG_CREATE, 0, IID_PPV_ARGS(&pItem));if (FAILED(hr)) continue;hr = pItem->BindToHandler(NULL, BHID_EnumItems, IID_PPV_ARGS(&pEnum));if (FAILED(hr)) continue;pItem = NULL;while (SUCCEEDED(pEnum->Next(1, &pItem, NULL))){if (NULL == pItem) break;try{pDisplayName = (LPWSTR*)CoTaskMemAlloc(MAX_PATH);memset(pDisplayName, 0, MAX_PATH); //SIGDN_NORMALDISPLAYif (SUCCEEDED(pItem->GetDisplayName(SIGDN_FILESYSPATH, pDisplayName))){vList.Add(CString((TCHAR*)*pDisplayName));}}catch (exception ex){CoTaskMemFree(pDisplayName);pDisplayName = NULL;}CoTaskMemFree(pDisplayName);pItem = NULL;}}return TRUE;}
static void  GetShellLibraryNameforLibrary(CStringArray& list)
{;IShellLibrary* pSL;IEnumShellItems* pEnum;IShellItem* pItem;LPWSTR* pDisplayName;HRESULT hr;//hr = SHGetKnownFolderItem(FOLDERID_DocumentsLibrary, KF_FLAG_CREATE, 0, IID_PPV_ARGS(&pItem));hr = SHGetKnownFolderItem(FOLDERID_Libraries, KF_FLAG_CREATE, 0, IID_PPV_ARGS(&pItem));if (FAILED(hr)) return;hr = pItem->BindToHandler(NULL, BHID_EnumItems, IID_PPV_ARGS(&pEnum));if (FAILED(hr)) return;pItem = NULL;while (SUCCEEDED(pEnum->Next(1, &pItem, NULL))){if (NULL == pItem) break;try{pDisplayName = (LPWSTR*)CoTaskMemAlloc(MAX_PATH);memset(pDisplayName, 0, MAX_PATH); //SIGDN_NORMALDISPLAYif (SUCCEEDED(pItem->GetDisplayName(SIGDN_NORMALDISPLAY, pDisplayName))){list.Add(CString((TCHAR*)*pDisplayName));}}catch (exception ex){CoTaskMemFree(pDisplayName);pDisplayName = NULL;}CoTaskMemFree(pDisplayName);pItem = NULL;}
}
//1:成功找到文件， 0：没有找到文件夹， -1：是库子文件夹，但是不是系统默认的库文件夹，无法匹配选择的文件
static int FindCurFloderFiles(CFileDialog* pDlg, CStringArray& sCurFolderFileList)
{sCurFolderFileList.RemoveAll();CString sCurVirtualFolder;CWnd* pcmbWnd = pDlg->GetDlgItem(cmb2);if (pcmbWnd)pcmbWnd->GetWindowTextW(sCurVirtualFolder);CStringArray subLibraryNameList;GetShellLibraryNameforLibrary(subLibraryNameList);int iCount = subLibraryNameList.GetCount();bool bFindflag = false;for (int i = 0; i < iCount; i++){if (sCurVirtualFolder.CompareNoCase(subLibraryNameList.GetAt(i)) == 0){bFindflag = true;continue;}}if (!bFindflag) return 0;CStringArray libraryFilesAndFoldersList;if (!GetKnowLibraryFilesAndFolders(libraryFilesAndFoldersList)) return false;CWnd* pWnd = pDlg->GetDlgItem(lst2);if (pWnd == NULL)return 0;CListCtrl* wndLst1 = (CListCtrl*)(pWnd->GetDlgItem(1));int nSelected = wndLst1->GetSelectedCount();if (!nSelected)return 0;int nItem = wndLst1->GetNextItem(-1, LVNI_SELECTED);CString strItemText;while ((nSelected--) > 0){strItemText = wndLst1->GetItemText(nItem, 0);iCount = libraryFilesAndFoldersList.GetCount();for (int i = 0; i < iCount; i++){CString str = libraryFilesAndFoldersList.GetAt(i);int ipos = str.ReverseFind(_T('\\'));if (ipos > 0){CString strtmp = str.Mid(ipos + 1);//if (strItemText.CompareNoCase(strtmp) == 0)if (strtmp.Find(strItemText) == 0){sCurFolderFileList.Add(str);break;}}}nItem = wndLst1->GetNextItem(nItem, LVNI_SELECTED);}if (sCurFolderFileList.GetCount() <= 0) return -1;return 1;
}BOOL WinFileSelectDlg::OnFileNameOK()
{m_bSelectVirtualItem = false;CWnd* pParent = GetParent();CFileDialog* pDlg = (CFileDialog*)CWnd::FromHandle(GetParent()->m_hWnd);if (pDlg){CWnd* pWnd = pDlg->GetDlgItem(lst2);if (pWnd == NULL)return FALSE;m_SelectedItemList.RemoveAll();CListCtrl* wndLst1 = (CListCtrl*)(pWnd->GetDlgItem(1));int nSelected = wndLst1->GetSelectedCount();if (!nSelected)return FALSE;CString strItemText, strDirectory = m_strCurrendDirectory;if (strDirectory.Right(1) != _T("\\"))strDirectory += _T("\\");CString fileslist = _T("");pDlg->SendMessage(CDM_GETSPEC, (WPARAM)MAX_PATH_EditControl,(LPARAM)fileslist.GetBuffer(MAX_PATH_EditControl));fileslist.ReleaseBuffer();if (m_strCurrendDirectory.GetLength() <= 0){//只有在库目录里才会有出现。//现在只检索系统默认的几个子库文件夹，第三方软件建立的库目录会提示错误。//目前算是部分解决CStringArray sFolderAndFileList;int iRtn = FindCurFloderFiles(pDlg, sFolderAndFileList);switch (iRtn){case 0:return 1;break;case 1:m_SelectedItemList.Copy(sFolderAndFileList);pDlg->EndDialog(IDOK);return 1;break;case -1:m_bSelectVirtualItem = true;pDlg->EndDialog(IDCANCEL);return 1;break;}}strItemText = strDirectory + fileslist;if (nSelected == 1 && fileslist != _T("")){CString sTmpNewFileFullPath;if (FilePathExists(strItemText)){m_SelectedItemList.Add(strItemText);return CFileDialog::OnFileNameOK();}else if (CheckPublicDesktopFile(strDirectory, fileslist, sTmpNewFileFullPath)){m_SelectedItemList.Add(sTmpNewFileFullPath);return CFileDialog::OnFileNameOK();}m_bSelectVirtualItem = true;//::MessageBoxW(NULL, m_strError.GetBuffer(), NULL, NULL);//return NULL;}}::MessageBeep(MB_ICONQUESTION);return 1;
};void WinFileSelectDlg::OnFolderChange()
{//TRACE(_T("CMyOpenDlg::OnFolderChange: \n"));CWnd* pcmbWnd = GetParent()->GetDlgItem(cmb13);if (pcmbWnd)pcmbWnd->SetWindowTextW(_T(""));m_strCurrendDirectory = GetFolderPath();//SetListView(ODM_VIEW_LARGE_ICONS);CFileDialog::OnFolderChange();};
BOOL WinFileSelectDlg::OnInitDialog()
{//TRACE(_T("CMyOpenDlg::OnInitDialog, hwnd=%p\n"), m_hWnd);return CFileDialog::OnInitDialog();
}void WinFileSelectDlg::OnInitDone()
{//TRACE(_T("CMyOpenDlg::OnInitDone\n"));
#ifdef _WIN64m_strCurrendDirectory = GetFolderPath();CWnd* pFD = GetParent();HideControl(edt1);HideControl(cmb1);HideControl(stc2);//HideControl(cmb13);//HideControl(stc3);/*CRect rectCancel; pFD->GetDlgItem(IDCANCEL)->GetWindowRect(&rectCancel);pFD->ScreenToClient(&rectCancel);CRect rectOK; pFD->GetDlgItem(IDOK)->GetWindowRect(&rectOK);pFD->ScreenToClient(&rectOK);pFD->GetDlgItem(IDOK)->SetWindowPos(0,rectCancel.left - rectOK.Width() - 5, rectCancel.top, 0,0, SWP_NOZORDER | SWP_NOSIZE);CRect rectList2; pFD->GetDlgItem(lst1)->GetWindowRect(&rectList2);pFD->ScreenToClient(&rectList2);pFD->GetDlgItem(lst1)->SetWindowPos(0,0,0,rectList2.Width(), abs(rectList2.top - (rectCancel.top - 5)), SWP_NOMOVE | SWP_NOZORDER);CRect rectStatic; pFD->GetDlgItem(stc3)->GetWindowRect(&rectStatic);pFD->ScreenToClient(&rectStatic);pFD->GetDlgItem(stc3)->SetWindowPos(0, rectCancel.left - 375, rectCancel.top + 5, rectStatic.Width(), rectStatic.Height(), SWP_NOZORDER);CRect rectEdit1; pFD->GetDlgItem(cmb13)->GetWindowRect(&rectEdit1);pFD->ScreenToClient(&rectEdit1);pFD->GetDlgItem(cmb13)->SetWindowPos(0, rectCancel.left - 320, rectCancel.top, rectEdit1.Width() - 15, rectEdit1.Height(), SWP_NOZORDER);*/SetControlText(stc3, m_strItemName.GetBuffer());SetControlText(IDOK, m_strSelect.GetBuffer());SetLastError(0);m_wndProc = (WNDPROC)::SetWindowLongPtr(pFD->m_hWnd, GWLP_WNDPROC, (LONG_PTR)WindowProcNew);DWORD errorNo = GetLastError();pFD->CenterWindow();
#elif WIN32m_strCurrendDirectory = GetFolderPath();CWnd* pFD = GetParent();HideControl(edt1);HideControl(cmb1);HideControl(stc2);//HideControl(0x4a0);//SetControlText(stc3, m_strItemName.GetBuffer());SetControlText(IDOK, m_strSelect.GetBuffer());SetControlText(cmb13, _T(""));m_wndProc = (WNDPROC)::SetWindowLong(pFD->m_hWnd, GWL_WNDPROC, (long)WindowProcNew);pFD->CenterWindow();
#endif
};//
// Change the list view to desired mode if the view exists.
// Display TRACE diagnostics either way.
//
BOOL WinFileSelectDlg::SetListView(LISTVIEWCMD cmd)
{//TRACE(_T("CMyOpenDlg::SetListView: \n"));// note that real dialog is my parent, not meCWnd* pshell = GetParent()->GetDlgItem(lst2);if (pshell) {// TRACE(_T("hwnd=%p.\n"), m_wndList.GetSafeHwnd());//TRACE(_T("SendMessage\n"));pshell->SendMessage(WM_COMMAND, cmd);return TRUE;}//TRACE(_T("failed.\n"), m_wndList.GetSafeHwnd());return FALSE;
}void WinFileSelectDlg::OnFileNameChange()
{CWnd* pWnd = GetParent()->GetDlgItem(lst2);if (pWnd == NULL)return;CListCtrl* wndLst1 = (CListCtrl*)(pWnd->GetDlgItem(1));int nSelected = wndLst1->GetSelectedCount();if (!nSelected){CWnd* pcmbWnd = GetParent()->GetDlgItem(cmb13);if (pcmbWnd)pcmbWnd->SetWindowTextW(_T(""));m_strLastSelectList = _T("");return;}CString strItemText, strDirectory = m_strCurrendDirectory;if (strDirectory.Right(1) != _T("\\"))strDirectory += _T("\\");CString fileslist = _T("");CWnd* pcmbWnd = GetParent()->GetDlgItem(cmb13);if (pcmbWnd)pcmbWnd->GetWindowTextW(fileslist);bool bFileFolderSameName = false;bool bOnlyFolder = true;int nItem = wndLst1->GetNextItem(-1, LVNI_SELECTED);while ((nSelected--) > 0){strItemText = wndLst1->GetItemText(nItem, 0);if (fileslist.Find(strItemText) >= 0) bFileFolderSameName = true;strItemText = strDirectory + strItemText;DWORD attr = GetFileAttributes(strItemText);if (!((attr != 0xFFFFFFFF) && (attr & FILE_ATTRIBUTE_DIRECTORY))){bOnlyFolder = false;break;}nItem = wndLst1->GetNextItem(nItem, LVNI_SELECTED);}while (bOnlyFolder){//清空之前，判断是否cmb13中新写入值，如果是，就有可能是当扩展名隐藏，有同名的文件和文件夹的情况if (fileslist.GetLength() > 0){if (fileslist.CompareNoCase(m_strLastSelectList)){break;}else if (m_bCmb13Changed && bFileFolderSameName && m_strLastSelectList.GetLength() > 0){break;}}CWnd* pcmbWnd = GetParent()->GetDlgItem(cmb13);if (pcmbWnd)pcmbWnd->SetWindowTextW(_T(""));break;}m_strLastSelectList = fileslist;m_bCmb13Changed = false;
}LRESULT CALLBACK WinFileSelectDlg::WindowProcNew(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{if (message == WM_COMMAND){if (HIWORD(wParam) == BN_CLICKED){if (LOWORD(wParam) == IDCANCEL){m_bSelectVirtualItem = false;}else if (LOWORD(wParam) == IDOK){m_bSelectVirtualItem = false;if (CFileDialog* pDlg = (CFileDialog*)CWnd::FromHandle(hwnd)){CString sFoldertmp = _T("");pDlg->SendMessage(CDM_GETFOLDERPATH, (WPARAM)MAX_PATH_EditControl,(LPARAM)sFoldertmp.GetBuffer(MAX_PATH_EditControl));sFoldertmp.ReleaseBuffer();CString fileslist = _T("");pDlg->SendMessage(CDM_GETSPEC, (WPARAM)MAX_PATH_EditControl,(LPARAM)fileslist.GetBuffer(MAX_PATH_EditControl));fileslist.ReleaseBuffer();DWORD tmpAttr = GetFileAttributes(fileslist);//如果用户在下拉列表中直接选择最近选择的文件，则直接选择之if (IsFileAbsolutePath(fileslist.GetBuffer())){if (FindFirstFileExists(fileslist.GetBuffer(), FALSE)){m_SelectedItemList.Add(fileslist);pDlg->EndDialog(IDOK);return NULL;}else{pDlg->EndDialog(IDOK);return NULL;}}if (m_strCurrendDirectory.GetLength() <= 0){//只有在库目录里才会有出现。//现在只检索系统默认的几个子库文件夹，第三方软件建立的库目录会提示错误。//目前算是部分解决CStringArray sFolderAndFileList;int iRtn = FindCurFloderFiles(pDlg, sFolderAndFileList);switch (iRtn){case 0:return CallWindowProc(m_wndProc, hwnd, message, wParam, lParam);break;case 1:m_SelectedItemList.Copy(sFolderAndFileList);pDlg->EndDialog(IDOK);return NULL;break;case -1:m_bSelectVirtualItem = true;pDlg->EndDialog(IDCANCEL);return NULL;break;}}bool bHaveSelect = false;if ((tmpAttr != 0xFFFFFFFF) && (tmpAttr & FILE_ATTRIBUTE_DIRECTORY)){return CallWindowProc(m_wndProc, hwnd, message, wParam, lParam);}//       CString Output;m_SelectedItemList.RemoveAll();CWnd* pWnd = pDlg->GetDlgItem(lst2);if (pWnd == NULL)return FALSE;CListCtrl* wndLst1 = (CListCtrl*)(pWnd->GetDlgItem(1));int nSelected = wndLst1->GetSelectedCount();if (!nSelected)return FALSE;/*Output = _T("");Output.Format(_T("nSelect = %d \n"), nSelected);*///       OutputDebugString(Output);CString strItemText, strDirectory = m_strCurrendDirectory;if (strDirectory.GetLength() > 1 && strDirectory.Right(1) != _T("\\"))strDirectory += _T("\\");///处理文件夹BOOL isLikeDesktopFlag = IsLikeDesktopFolder(strDirectory);int nItem = wndLst1->GetNextItem(-1, LVNI_SELECTED);CString sTmpFileeList = fileslist;while ((nSelected--) > 0){strItemText = wndLst1->GetItemText(nItem, 0);if (sTmpFileeList.GetLength() > 0) //处理当扩展名隐藏，有同名的文件和文件夹的情况{int idx = sTmpFileeList.Find(strItemText + _T("."));if (idx >= 0){CString stmp1 = sTmpFileeList.Left(idx);CString stmp2 = sTmpFileeList.Mid(idx + strItemText.GetLength() + 1);sTmpFileeList = stmp1 + stmp2;nItem = wndLst1->GetNextItem(nItem, LVNI_SELECTED);continue;}}DWORD attr = GetFileAttributes(strDirectory + strItemText);if ((attr != 0xFFFFFFFF) && (attr & FILE_ATTRIBUTE_DIRECTORY)){m_SelectedItemList.Add(strDirectory + strItemText);bHaveSelect = true;}else if (isLikeDesktopFlag){CString sTmpNewFolderFullPath;if (CheckPublicDesktopFolder(strDirectory, strItemText, sTmpNewFolderFullPath)){m_SelectedItemList.Add(sTmpNewFolderFullPath);bHaveSelect = true;}}nItem = wndLst1->GetNextItem(nItem, LVNI_SELECTED);}////处理文件/*    Output = _T("");Output.Format(_T("ItemList count = %d \n"), m_SelectedItemList.GetCount());OutputDebugString(Output);*/strItemText = _T("");nSelected = wndLst1->GetSelectedCount();if (nSelected > m_SelectedItemList.GetCount()){int MoreThanOnFile = fileslist.Find(_T("\""));if (MoreThanOnFile != -1){for (int i = 0; i < fileslist.GetLength(); i++)if (fileslist[i] != '\"'){strItemText.AppendFormat(_T("%c"), fileslist[i]);if (fileslist[i - 1] == '\"' && fileslist[i] == ' ')strItemText.Delete(strItemText.GetLength() - 1);}else if (!strItemText.IsEmpty()){if (FilePathExists(strDirectory + strItemText)){m_SelectedItemList.Add(strDirectory + strItemText);strItemText.Empty();bHaveSelect = true;}else if (isLikeDesktopFlag){CString sTmpNewFileFullPath;if (CheckPublicDesktopFile(strDirectory, strItemText, sTmpNewFileFullPath)){m_SelectedItemList.Add(sTmpNewFileFullPath);strItemText.Empty();bHaveSelect = true;}}}}else{if (fileslist.GetLength() > 0){if (FilePathExists(strDirectory + fileslist)){m_SelectedItemList.Add(strDirectory + fileslist);bHaveSelect = true;}else if (isLikeDesktopFlag){CString sTmpNewFileFullPath;if (CheckPublicDesktopFile(strDirectory, fileslist, sTmpNewFileFullPath)){m_SelectedItemList.Add(sTmpNewFileFullPath);bHaveSelect = true;}}}}}if (bHaveSelect)pDlg->EndDialog(IDOK);else{m_bSelectVirtualItem = true;pDlg->EndDialog(IDCANCEL);}return NULL;}}}else if (HIWORD(wParam) == CBN_EDITCHANGE){if (LOWORD(wParam) == cmb13){m_bCmb13Changed = true;}}}return CallWindowProc(m_wndProc, hwnd, message, wParam, lParam);
}#pragma warning( pop )
#endif // WIN32

二、QT版本

CustomFileDialog.h

#pragma once
#include <QFileDialog>class QPushButton;
class QListView;
class CustomFileDialog : public QFileDialog
{Q_OBJECT
public:CustomFileDialog(const QString& qstrCaption, QWidget* pParent = nullptr);private slots:void onFinish();private:QPushButton* m_pBtnOk;QListView* m_pListview;};

CustomFileDialog.cpp

#include "CustomFileDialog.h"
#include <QListView>
#include <QTreeView>
#include <QDialogButtonBox>
#include <QDebug>
#include <QLabel>
#include <QPushButton>
#include <QPoint>
#include <QEvent>
#include <QMouseEvent>
#include "ui/languagehelper.h"CustomFileDialog::CustomFileDialog(const QString& qstrCaption, QWidget* pParent/* = nullptr*/): QFileDialog(pParent), m_pBtnOk(nullptr), m_pListview(nullptr)
{auto funcSetLabelDisplayText = [&](QString qstrTag, QString qstrText) {QLabel* pLabelLookin = this->findChild<QLabel*>(qstrTag);if (pLabelLookin) pLabelLookin->setText(qstrText);};auto funcPrintObject = [&]() {QObjectList childs = this->children();foreach(QObject * child, childs) {qDebug() << QString("%1%2 : %3").arg("", 0).arg(child->metaObject()->className()).arg(child->objectName());}};this->setWindowTitle(qstrCaption);this->setOption(QFileDialog::DontUseNativeDialog, true);// multi-selectQListView* pListView = this->findChild<QListView*>("listView");if (pListView){m_pListview = pListView;pListView->setSelectionMode(QAbstractItemView::ExtendedSelection);auto* pSelectModel = pListView->selectionModel();QObject::connect(pSelectModel, &QItemSelectionModel::selectionChanged,[&]() {if (m_pBtnOk) { m_pBtnOk->setText(GET_TEXT_BY_LANGID(kLanguageIdUpload)); }});}QTreeView* pTreeView = this->findChild<QTreeView*>();if (pTreeView)pTreeView->setSelectionMode(QAbstractItemView::ExtendedSelection);// ok/cancelQDialogButtonBox* pButton = this->findChild<QDialogButtonBox*>("buttonBox");if (pButton){m_pBtnOk = pButton->button(QDialogButtonBox::Open);m_pBtnOk->setText(GET_TEXT_BY_LANGID(kLanguageIdUpload));QPushButton* pBtnCancel = pButton->button(QDialogButtonBox::Cancel);pBtnCancel->setText(GET_TEXT_BY_LANGID(kLanguageIdCancel));}// disable the connectiondisconnect(pButton, SIGNAL(accepted()), this, SLOT(accept()));// custom connectconnect(pButton, SIGNAL(accepted()), this, SLOT(onFinish()));// set the window dispaly infofuncSetLabelDisplayText("lookInLabel", GET_TEXT_BY_LANGID(kLanguageIdFilePos));funcSetLabelDisplayText("fileNameLabel", GET_TEXT_BY_LANGID(kLanguageIdFilename));funcSetLabelDisplayText("fileTypeLabel", GET_TEXT_BY_LANGID(kLanguageIdFileType));setLabelText(QFileDialog::Accept, GET_TEXT_BY_LANGID(kLanguageIdUpload));
}void  CustomFileDialog::onFinish()
{QDialog::accept();
}

三、使用

QString qstrBtnText = "上传";QStringList listFiles;
#ifdef WIN32wchar_t szBtnText[1024];wcscpy_s(reinterpret_cast<wchar_t*>(szBtnText),sizeof(szBtnText) / sizeof(wchar_t),reinterpret_cast<const wchar_t*>(qstrBtnText.utf16()));wchar_t szInitDir[] = _T("C:\\Users");wchar_t szItemName[] = _T("Item Name:");wchar_t szErrorInfo[] = _T("You can't open this location using this program.\nPlease try a different location.");AFX_MANAGE_STATE(AfxGetStaticModuleState());CWnd* pCWnd = CWnd::GetForegroundWindow();WinFileSelectDlg dlgSelectFile(TRUE, _T("*.*"), NULL,OFN_HIDEREADONLY | OFN_ALLOWMULTISELECT,_T("All files and folders(*.*)|*.*||"), pCWnd);if (szInitDir && lstrlen(szInitDir) > 0)dlgSelectFile.m_ofn.lpstrInitialDir = szInitDir;dlgSelectFile.SetSpecialStrings(szItemName, szBtnText);dlgSelectFile.SetErrorInfo(szErrorInfo);dlgSelectFile.m_SelectedItemList.RemoveAll();int nCode = dlgSelectFile.DoModal();if (IDOK == nCode){if (dlgSelectFile.HaveSelectSomething()){{if (dlgSelectFile.m_SelectedItemList.GetCount() <= 0) return listFiles;for (size_t nIndex = 0; nIndex < dlgSelectFile.m_SelectedItemList.GetCount(); ++nIndex){wchar_t szBuffer[MAX_PATH] = { 0 };wcscpy_s(szBuffer, MAX_PATH, dlgSelectFile.m_SelectedItemList[nIndex].GetBuffer());QString qstrFilepath = QString::fromWCharArray(szBuffer);listFiles.push_back(qstrFilepath);}}}}
#elseCustomFileDialog dlgSelectFile("上传");if (QDialog::Accepted == dlgSelectFile.exec()){listFiles = dlgSelectFile.selectedFiles();}
#endif // WIN32return listFiles;

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C++文件和文件夹选择

一、MFC版本

二、QT版本

三、使用

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