Question

我已经看到了这个地方的答案，但不是非MFC C ++的答案。我已经知道如何使用文件夹的内容填充列表框 - 这不是我想要的。我需要一个列表框来拥有一个小文件夹选择器，这样我就可以在一个单独的列表框中显示所选项目的内容（其中的文件）。同样，我知道如何实现所有这一切，除了在列表框中有一个文件夹选择器。

我已经查看过MSDN上的所有列表框功能，那里只有四到五个功能，但似乎没有一个功能。

我没有任何相关的代码可以发布与此问题相关的内容，所以我希望我在这里解释的内容已经足够了。

这是我试图复制的图片：

谢谢！

Answer 1

好的，我找到了一个解决方案，即使它有点像hacky ......

#include "stdafx.h"
#include <windows.h>
#include <Commdlg.h>
#include <Shlobj.h>
#include <wchar.h>
#include <algorithm>
#include <string>
#include <vector>

#define DLL extern "C" _declspec(dllexport)
using namespace std;

typedef basic_string<WCHAR> tstring;
tstring widen(string str)
{
    const size_t wchar_count = str.size() + 1;
    vector<WCHAR> buf(wchar_count);
    return tstring{ buf.data(), (size_t)MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, buf.data(), wchar_count) };
}

string shorten(tstring str)
{
    int nbytes = WideCharToMultiByte(CP_UTF8, 0, str.c_str(), (int)str.length(), NULL, 0, NULL, NULL);
    vector<char> buf((size_t)nbytes);
    return string{ buf.data(), (size_t)WideCharToMultiByte(CP_UTF8, 0, str.c_str(), (int)str.length(), buf.data(), nbytes, NULL, NULL) };
}

DLL char *get_open_filename(char *filter, char *fname)
{
    OPENFILENAMEW ofn;

    HWND SitehWnd;
    SitehWnd = GetAncestor(GetActiveWindow(), GA_ROOTOWNER);

    string str_filter = string(filter).append("||");
    string str_fname = fname;

    tstring tstr_filter = widen(str_filter);
    replace(tstr_filter.begin(), tstr_filter.end(), '|', '\0');
    tstring tstr_fname = widen(str_fname);

    WCHAR wstr_fname[MAX_PATH];
    wcsncpy_s(wstr_fname, tstr_fname.c_str(), MAX_PATH);

    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(ofn);
    ofn.hwndOwner = SitehWnd;
    ofn.lpstrFile = wstr_fname;
    ofn.nMaxFile = MAX_PATH;
    ofn.lpstrFilter = tstr_filter.c_str();
    ofn.nFilterIndex = 0;
    ofn.lpstrTitle = NULL;
    ofn.lpstrInitialDir = NULL;
    ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;

    if (GetOpenFileNameW(&ofn) != 0)
    {
        static string result;
        result = shorten(wstr_fname);
        return (char *)result.c_str();
    }

    return (char *)"";
}

DLL char *get_save_filename(char *filter, char *fname)
{
    OPENFILENAMEW ofn;

    HWND SitehWnd;
    SitehWnd = GetAncestor(GetActiveWindow(), GA_ROOTOWNER);

    string str_filter = string(filter).append("||");
    string str_fname = fname;

    tstring tstr_filter = widen(str_filter);
    replace(tstr_filter.begin(), tstr_filter.end(), '|', '\0');
    tstring tstr_fname = widen(str_fname);

    WCHAR wstr_fname[MAX_PATH];
    wcsncpy_s(wstr_fname, tstr_fname.c_str(), MAX_PATH);

    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(ofn);
    ofn.hwndOwner = SitehWnd;
    ofn.lpstrFile = wstr_fname;
    ofn.nMaxFile = MAX_PATH;
    ofn.lpstrFilter = tstr_filter.c_str();
    ofn.nFilterIndex = 0;
    ofn.lpstrTitle = NULL;
    ofn.lpstrInitialDir = NULL;
    ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;

    if (GetSaveFileNameW(&ofn) != 0)
    {
        static string result;
        result = shorten(wstr_fname);
        return (char *)result.c_str();
    }

    return (char *)"";
}

DLL char *get_open_filename_ext(char *filter, char *fname, char *dir, char *title)
{
    OPENFILENAMEW ofn;

    HWND SitehWnd;
    SitehWnd = GetAncestor(GetActiveWindow(), GA_ROOTOWNER);

    string str_filter = string(filter).append("||");
    string str_fname = fname;
    string str_dir = dir;
    string str_title = title;

    tstring tstr_filter = widen(str_filter);
    replace(tstr_filter.begin(), tstr_filter.end(), '|', '\0');
    tstring tstr_fname = widen(str_fname);
    tstring tstr_dir = widen(str_dir);
    tstring tstr_title = widen(str_title);

    WCHAR wstr_fname[MAX_PATH];
    wcsncpy_s(wstr_fname, tstr_fname.c_str(), MAX_PATH);

    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(ofn);
    ofn.hwndOwner = SitehWnd;
    ofn.lpstrFile = wstr_fname;
    ofn.nMaxFile = MAX_PATH;
    ofn.lpstrFilter = tstr_filter.c_str();
    ofn.nFilterIndex = 0;
    ofn.lpstrTitle = tstr_title.c_str();
    ofn.lpstrInitialDir = tstr_dir.c_str();
    ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;

    if (GetOpenFileNameW(&ofn) != 0)
    {
        static string result;
        result = shorten(wstr_fname);
        return (char *)result.c_str();
    }

    return (char *)"";
}

DLL char *get_save_filename_ext(char *filter, char *fname, char *dir, char *title)
{
    OPENFILENAMEW ofn;

    HWND SitehWnd;
    SitehWnd = GetAncestor(GetActiveWindow(), GA_ROOTOWNER);

    string str_filter = string(filter).append("||");
    string str_fname = fname;
    string str_dir = dir;
    string str_title = title;

    tstring tstr_filter = widen(str_filter);
    replace(tstr_filter.begin(), tstr_filter.end(), '|', '\0');
    tstring tstr_fname = widen(str_fname);
    tstring tstr_dir = widen(str_dir);
    tstring tstr_title = widen(str_title);

    WCHAR wstr_fname[MAX_PATH];
    wcsncpy_s(wstr_fname, tstr_fname.c_str(), MAX_PATH);

    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(ofn);
    ofn.hwndOwner = SitehWnd;
    ofn.lpstrFile = wstr_fname;
    ofn.nMaxFile = MAX_PATH;
    ofn.lpstrFilter = tstr_filter.c_str();
    ofn.nFilterIndex = 0;
    ofn.lpstrTitle = tstr_title.c_str();
    ofn.lpstrInitialDir = tstr_dir.c_str();
    ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;

    if (GetSaveFileNameW(&ofn) != 0)
    {
        static string result;
        result = shorten(wstr_fname);
        return (char *)result.c_str();
    }

    return (char *)"";
}

void ClientResize(HWND hWnd, int nWidth, int nHeight)
{
    RECT rcClient, rcWind;
    POINT ptDiff;
    GetClientRect(hWnd, &rcClient);
    GetWindowRect(hWnd, &rcWind);
    ptDiff.x = (rcWind.right - rcWind.left) - rcClient.right;
    ptDiff.y = (rcWind.bottom - rcWind.top) - rcClient.bottom;
    MoveWindow(hWnd, rcWind.left, rcWind.top, nWidth + ptDiff.x, nHeight + ptDiff.y, TRUE);
}

WCHAR wstr_dname[MAX_PATH];

UINT APIENTRY OFNHookProcOldStyle(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    if (uMsg == WM_INITDIALOG)
    {
        ClientResize(hWnd, 424, 255);

        RECT rect;
        GetWindowRect(hWnd, &rect);
        MoveWindow(hWnd, 
            (GetSystemMetrics(SM_CXSCREEN) / 2) - ((rect.right - rect.left) / 2), 
            (GetSystemMetrics(SM_CYSCREEN) / 2) - ((rect.bottom - rect.top) / 2), 
            rect.right - rect.left, rect.bottom - rect.top, TRUE);

        HWND bttn1 = GetDlgItem(hWnd, IDOK);
        HWND bttn2 = GetDlgItem(hWnd, IDCANCEL);
        HWND list1 = GetDlgItem(hWnd, 1120);
        HWND list2 = GetDlgItem(hWnd, 1121);
        HWND label1 = GetDlgItem(hWnd, 1090);
        HWND label2 = GetDlgItem(hWnd, 65535);
        HWND label3 = GetDlgItem(hWnd, 1089);
        HWND label4 = GetDlgItem(hWnd, 1091);
        HWND label5 = GetDlgItem(hWnd, 1088);
        HWND cmbbx1 = GetDlgItem(hWnd, 1136);
        HWND cmbbx2 = GetDlgItem(hWnd, 1137);
        HWND txtbx1 = GetDlgItem(hWnd, 1152);

        SetWindowText(label1, "&Files: (*.*)");
        SetWindowText(label2, "&Directories:");
        SetWindowText(label3, "Directory &Name:");
        SetWindowText(label4, "D&rives:");
        DestroyWindow(cmbbx1);
        DestroyWindow(txtbx1);

        MoveWindow(bttn1, 256, 224, 77, 27, TRUE);
        MoveWindow(bttn2, 340, 224, 77, 27, TRUE);
        MoveWindow(label1, 232, 56, 72, 16, TRUE);
        MoveWindow(label2, 8, 56, 72, 16, TRUE);
        MoveWindow(label3, 8, 8, 93, 16, TRUE);
        MoveWindow(label4, 232, 176, 50, 16, TRUE);
        MoveWindow(label5, 8, 24, 409 * 100, 16, TRUE);
        MoveWindow(list1, 232, 72, 185, 93, TRUE);
        MoveWindow(list2, 8, 72, 213, 123, TRUE);
        MoveWindow(cmbbx2, 232, 192, 185, 19, TRUE);

        DlgDirListW(hWnd, wstr_dname, 1120, 1088, DDL_ARCHIVE | DDL_READWRITE | DDL_READONLY);
        PostMessageW(hWnd, WM_SETFOCUS, 0, 0);
    }

    if (uMsg == WM_COMMAND && HIWORD(wParam) == BN_CLICKED && LOWORD(wParam) == IDOK)
    {
        HWND label1 = GetDlgItem(hWnd, 1090);
        HWND label2 = GetDlgItem(hWnd, 65535);
        HWND label3 = GetDlgItem(hWnd, 1089);
        HWND label4 = GetDlgItem(hWnd, 1091);
        HWND label5 = GetDlgItem(hWnd, 1088);

        GetDlgItemTextW(hWnd, 1088, wstr_dname, MAX_PATH);
        PostMessageW(hWnd, WM_COMMAND, IDABORT, 0);
        return TRUE;
    }

    if (uMsg == WM_COMMAND && HIWORD(wParam) == BN_CLICKED && LOWORD(wParam) == IDCANCEL)
    {
        tstring tstr_dname = widen("");
        wcsncpy_s(wstr_dname, tstr_dname.c_str(), MAX_PATH);
        PostMessageW(hWnd, WM_COMMAND, IDABORT, 0);
        return TRUE;
    }

    if (uMsg == WM_CLOSE)
    {
        tstring tstr_dname = widen("");
        wcsncpy_s(wstr_dname, tstr_dname.c_str(), MAX_PATH);
        PostMessageW(hWnd, WM_COMMAND, IDABORT, 0);
        return TRUE;
    }

    return FALSE;
}

DLL char *get_directory(char *dname)
{
    OPENFILENAMEW ofn;

    HWND SitehWnd;
    SitehWnd = GetAncestor(GetActiveWindow(), GA_ROOTOWNER);

    string str_dname = dname;

    tstring tstr_filter = widen("*.*|*.*|");
    replace(tstr_filter.begin(), tstr_filter.end(), '|', '\0');
    tstring tstr_dname = widen(str_dname);
    tstring tstr_title = widen("Select Directory");
    tstring tstr_empty = widen("");

    if (tstr_dname == tstr_empty)
        GetCurrentDirectoryW(MAX_PATH, wstr_dname);
    else
        wcsncpy_s(wstr_dname, tstr_dname.c_str(), MAX_PATH);

    ZeroMemory(&ofn, sizeof(ofn));
    ofn.lStructSize = sizeof(ofn);
    ofn.hwndOwner = SitehWnd;
    ofn.lpstrFile = NULL;
    ofn.nMaxFile = MAX_PATH;
    ofn.lpstrFilter = tstr_filter.c_str();
    ofn.nFilterIndex = 0;
    ofn.lpstrTitle = tstr_title.c_str();
    ofn.lpstrInitialDir = wstr_dname;
    ofn.Flags = OFN_NONETWORKBUTTON | OFN_ENABLEHOOK | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_LONGNAMES;
    ofn.lpfnHook = OFNHookProcOldStyle;

    GetOpenFileNameW(&ofn);

    DWORD attrib = GetFileAttributesW(wstr_dname);

    if (attrib != INVALID_FILE_ATTRIBUTES && (attrib & FILE_ATTRIBUTE_DIRECTORY))
    {
        static string result;
        result = shorten(wstr_dname);
        return (char *)result.c_str();
    }

    return (char *)"";
}

DLL char *get_directory_alt(char *capt, char *root)
{
    BROWSEINFOW bi;

    HWND SitehWnd;
    SitehWnd = GetAncestor(GetActiveWindow(), GA_ROOTOWNER);

    string str_capt = capt;
    string str_root = root;

    tstring tstr_capt = widen(str_capt);
    tstring tstr_root = widen(str_root);
    tstring tstr_empty = widen("");
    tstring tstr_zero = widen("0");

    LPITEMIDLIST pstr_root;

    if (tstr_root == tstr_empty)
        SHParseDisplayName(tstr_zero.c_str(), 0, &pstr_root, 0, 0);
    else
        SHParseDisplayName(tstr_root.c_str(), 0, &pstr_root, 0, 0);

    WCHAR wstr_dir[MAX_PATH];

    ZeroMemory(&bi, sizeof(bi));
    bi.hwndOwner = SitehWnd;
    bi.pidlRoot = pstr_root;
    bi.pszDisplayName = wstr_dir;
    bi.lpszTitle = tstr_capt.c_str();
    bi.ulFlags = BIF_RETURNONLYFSDIRS | BIF_NEWDIALOGSTYLE | BIF_NONEWFOLDERBUTTON;

    LPITEMIDLIST lpItem = SHBrowseForFolderW(&bi);
    if (lpItem != NULL)
    {
        if (SHGetPathFromIDListW(lpItem, wstr_dir) == 0)
            return (char *)"";
        else
        {
            static string result;
            result = shorten(wstr_dir);
            return (char *)result.c_str();
        }
    }

    return (char *)"";
}

无论如何，这是我的完整库，问题是关于get_directory（）函数，我通过操作旧式GetOpenFileName（）对话框的内容来完成，结果对话框看起来几乎与我在问题中发布的截图中的一个，这正是我拍摄的内容。问题解决了。：d

如何从列表框中选择文件夹？（C ++，WinAPI）

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如何从列表框中选择文件夹？ （C ++，WinAPI）

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如何从列表框中选择文件夹？（C ++，WinAPI）