Wie kann ich Dateinamen und Ordner in einem Listview anzeigen lassen?

[Andrzej]

Wie bekomme ich in meinem Listview alle Dateien und Ordner mit dem entsprechenden Icon und Spalteninformationen angezeigt?

// ShowFiles.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "ShowFiles.h"

#include <commctrl.h> 
#pragma comment(lib, "comctl32.lib")

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;								// current instance
TCHAR szTitle[MAX_LOADSTRING];					// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];			// the main window class name

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
INT_PTR CALLBACK	About(HWND, UINT, WPARAM, LPARAM);

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
                     _In_opt_ HINSTANCE hPrevInstance,
                     _In_ LPTSTR    lpCmdLine,
                     _In_ int       nCmdShow)
{
	UNREFERENCED_PARAMETER(hPrevInstance);
	UNREFERENCED_PARAMETER(lpCmdLine);

 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;

	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_SHOWFILES, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow))
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_SHOWFILES));

	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0))
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return (int) msg.wParam;
}

//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX);

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_SHOWFILES));
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= MAKEINTRESOURCE(IDC_SHOWFILES);
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   HWND hWnd;

   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;

	DWORD       dwStyle;
	HWND        hwndListView;

	LV_COLUMN   lvColumn;
	int         i;
	TCHAR       szString[5][20] = { L"File", L"Ext", L"Size", L"Created", L"Attributes" };

	WIN32_FIND_DATA ffd;
	LARGE_INTEGER filesize;
	TCHAR szDir[MAX_PATH];
	size_t length_of_arg;
	HANDLE hFind = INVALID_HANDLE_VALUE;
	DWORD dwError = 0;

	switch (message)
	{

	case WM_CREATE:
		INITCOMMONCONTROLSEX icex;           // Structure for control initialization.
		icex.dwICC = ICC_LISTVIEW_CLASSES;
		InitCommonControlsEx(&icex);

		dwStyle = WS_TABSTOP |
			WS_CHILD |
			WS_VISIBLE |
			LVS_AUTOARRANGE |
			LVS_REPORT |
			LVS_OWNERDATA;

		hwndListView = CreateWindowEx(WS_EX_CLIENTEDGE,          // ex style
			WC_LISTVIEW,               // class name - defined in commctrl.h
			L"",                        // dummy text
			dwStyle,                   // style
			10,                         // x position
			18,                         // y position
			1024,                         // width
			600,                         // height
			hWnd,                // parent
			(HMENU)668,				// ID
			hInst,                   // instance
			NULL);                     // no extra data

		// ----------- add columns

		//empty the list
		ListView_DeleteAllItems(hwndListView);

		//initialize the columns
		lvColumn.mask = LVCF_FMT | LVCF_WIDTH | LVCF_TEXT | LVCF_SUBITEM;
		lvColumn.fmt = LVCFMT_LEFT;
		lvColumn.cx = 180;
		for (i = 0; i < 5; i++)
		{
			lvColumn.pszText = szString[i];
			ListView_InsertColumn(hwndListView, i, &lvColumn);
		}

		// Set Gridlines
		ListView_SetExtendedListViewStyle(hwndListView, LVS_EX_GRIDLINES);

		// test 1 failes

		LVITEM item;
		item.mask = LVIF_TEXT;
		item.cchTextMax = 6;

		item.iSubItem = 1;
		item.pszText = L"12345";
		item.iItem = 0;
		ListView_InsertItem(hwndListView, &item);

		item.iSubItem = 2; // zero based index of column
		item.pszText = L"23456";
		ListView_InsertItem(hwndListView, &item);

		item.iSubItem = 3; // zero based index of column
		item.pszText = L"34567";
		ListView_InsertItem(hwndListView, &item);

		// test 2 failes

		ListView_SetItemText(hwndListView, 0, 1, L"12345");
		ListView_SetItemText(hwndListView, 0, 2, L"23456");
		ListView_SetItemText(hwndListView, 0, 3, L"34567");

		// list and show files...
		do
		{
			if (ffd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
			{
				_tprintf(TEXT("  %s   <DIR>\n"), ffd.cFileName);
			}
			else
			{
				filesize.LowPart = ffd.nFileSizeLow;
				filesize.HighPart = ffd.nFileSizeHigh;
				_tprintf(TEXT("  %s   %ld bytes\n"), ffd.cFileName, filesize.QuadPart);
			}
		} while (FindNextFile(hFind, &ffd) != 0);

		break;

	case WM_COMMAND:
		wmId    = LOWORD(wParam);
		wmEvent = HIWORD(wParam);
		// Parse the menu selections:
		switch (wmId)
		{
		case IDM_\1:
			DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About);
			break;
		case IDM_EXIT:
			DestroyWindow(hWnd);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
		}
		break;
	case WM_PAINT:
		hdc = BeginPaint(hWnd, &ps);
		// TODO: Add any drawing code here...
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	default:
		return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

// Message handler for about box.
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	UNREFERENCED_PARAMETER(lParam);
	switch (message)
	{
	case WM_INITDIALOG:
		return (INT_PTR)TRUE;

	case WM_COMMAND:
		if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
		{
			EndDialog(hDlg, LOWORD(wParam));
			return (INT_PTR)TRUE;
		}
		break;
	}
	return (INT_PTR)FALSE;
}

[Hi]

Schlag dich doch nicht mit sowas rum
http://www.qt.io/

[merano]

Vielleicht hilft das hier weiter.

http://www.codeproject.com/Articles/2890/Using-ListView-control-under-Win-API

[url]http://www.codeproject.com/Articles/7891/Using-virtual-lists
[/url]

Ausserdem ist ffd nicht initialisiert, was am fehlenden FindFirst liegt.

Anmerkung MSDN:

https://msdn.microsoft.com/en-us/library/windows/desktop/bb761107.aspx

The LVM_INSERTITEM message will insert the new item in the proper position in the sort order if the following conditions hold:
You are using one of the LVS_SORTXXX styles.
You are not using the LVS_OWNERDRAW style.

Oder mit anderen Worten:

LVS_OWNERDATA erfordert besondere Aktionen ...

[Mr C]

http://www.functionx.com/visualc/applications/explorer.htm

[merano]

So ungefähr könnte das aussehen ...

static vector<basic_string<TCHAR>> g_MainList;

switch (message)
{

case WM_CREATE:

   ...

   // Fill in items
   g_MainList.push_back(_T("erster"));
   g_MainList.push_back(_T("zweiter"));
   g_MainList.push_back(_T("dritter"));
   g_MainList.push_back(_T("vierter"));
   g_MainList.push_back(_T("fünfter"));

   // Sets the virtual number of items in list view. 
   ListView_SetItemCount(hwndListView, g_MainList.size()); 

   break;

  case WM_NOTIFY: {
      NMHDR* pnmh = (NMHDR*) lParam;   

      switch(pnmh->code)  
      {   
      case LVN_GETDISPINFO:   
                                {
        LV_DISPINFO* pdi = (LV_DISPINFO*)lParam;   

        if(0 == pdi->item.iSubItem) {   
           if(pdi->item.mask & LVIF_TEXT)   
              swprintf(pdi->item.pszText, g_MainList[pdi->item.iItem].c_str());   
           if(pdi->item.mask & LVIF_IMAGE)   
              pdi->item.iImage = 0;   
           }   
        }
      }
  }
  break;