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Windows-classic-samples/Samples/Win7Samples/winui/shell/legacysamples/enumdesk/enumdesk.cpp
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2025-11-28 00:35:46 +09:00

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/**************************************************************************
THIS CODE AND INFORMATION IS PROVIDED 'AS IS' WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.
Copyright 1999 - 2000 Microsoft Corporation. All Rights Reserved.
**************************************************************************/
/**************************************************************************
File: EnumDesk.cpp
Description:
**************************************************************************/
/**************************************************************************
#include statements
**************************************************************************/
#include <windows.h>
#include <windowsx.h>
#include <commctrl.h>
#include <shlobj.h>
#include "EnumDesk.h"
#include "Tree.h"
#include "List.h"
#include "resource.h"
/**************************************************************************
function prototypes
**************************************************************************/
int PASCAL WinMain(HINSTANCE, HINSTANCE, LPSTR, int);
BOOL Main_InitApplication(HINSTANCE);
BOOL Main_InitInstance(HINSTANCE, int);
LRESULT CALLBACK Main_WndProc(HWND, UINT, WPARAM, LPARAM);
HIMAGELIST Main_CreateImageList(BOOL);
void Main_SizeChildren(HWND);
void Main_UpdateMenu(HWND, HMENU);
LRESULT Main_OnCommand(HWND, WPARAM, LPARAM);
/**************************************************************************
global variables and definitions
**************************************************************************/
HINSTANCE g_hInst;
TCHAR g_szClassName[] = TEXT("EnumDeskWndClass");
HWND g_hwndMain;
LPMALLOC g_pMalloc;
UINT g_uPosition;
IContextMenu2 *g_pcm2;
#define GAP_SIZE 2
#define MIN_SIZE 10
/******************************************************************************
WinMain
******************************************************************************/
int PASCAL WinMain( HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
UNREFERENCED_PARAMETER(lpCmdLine);
MSG msg;
g_hInst = hInstance;
if(!hPrevInstance)
if(!Main_InitApplication(hInstance))
return FALSE;
CoInitialize(NULL);
//required to use the common controls
InitCommonControls();
/* Perform initializations that apply to a specific instance */
if (!Main_InitInstance(hInstance, nCmdShow))
return FALSE;
/* Acquire and dispatch messages until a WM_QUIT uMessage is received. */
HACCEL hAccels = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDR_ACCELS));
while(GetMessage( &msg, NULL, 0x00, 0x00))
{
if(!TranslateAccelerator(g_hwndMain, hAccels, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
CoUninitialize();
return (int)msg.wParam;
}
/******************************************************************************
Main_InitApplication
******************************************************************************/
BOOL Main_InitApplication(HINSTANCE hInstance)
{
WNDCLASS wc;
/* Fill in window class structure with parameters that describe the main window. */
wc.style = 0;
wc.lpfnWndProc = (WNDPROC)Main_WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
wc.hCursor = LoadCursor(hInstance, MAKEINTRESOURCE(IDC_SPLIT_CURSOR));
wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
wc.lpszMenuName = MAKEINTRESOURCE(IDM_MAIN_MENU);
wc.lpszClassName = g_szClassName;
/* Register the window class and return success/failure code. */
return RegisterClass(&wc);
}
/******************************************************************************
Main_InitInstance
******************************************************************************/
BOOL Main_InitInstance( HINSTANCE hInstance,
int nCmdShow)
{
/* Create a main window for this application instance. */
g_hwndMain = CreateWindowEx( 0,
g_szClassName,
TEXT("New EnumDesk Sample"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL);
/* If window could not be created, return "failure" */
if(!g_hwndMain)
return FALSE;
/* Make the window visible; update its client area; and return "success" */
ShowWindow(g_hwndMain, nCmdShow);
UpdateWindow(g_hwndMain);
return TRUE;
}
/******************************************************************************
Main_WndProc
******************************************************************************/
LRESULT CALLBACK Main_WndProc(HWND hWnd,
UINT uMessage,
WPARAM wParam,
LPARAM lParam)
{
switch (uMessage)
{
case WM_NCCREATE:
SHGetMalloc(&g_pMalloc);
break;
case WM_CREATE:
{
HIMAGELIST himlLarge;
HIMAGELIST himlSmall;
HWND hwndTree;
HWND hwndList;
g_uPosition = 0;
//get the system image lists
himlLarge = Main_CreateImageList(TRUE);
himlSmall = Main_CreateImageList(FALSE);
// create the TreeView control
hwndTree = Tree_Create(g_hInst, hWnd, himlSmall);
// create the ListView control
hwndList = List_Create(g_hInst, hWnd, himlLarge, himlSmall);
//initialize the TreeView control
Tree_Init(hwndTree);
SetFocus(hwndTree);
}
break;
case WM_NOTIFY:
{
LPNMHDR pnmh = (LPNMHDR) lParam;
switch(pnmh->idFrom)
{
case IDC_TREEVIEW:
return Tree_Notify(hWnd, lParam);
case IDC_LISTVIEW:
return List_Notify(hWnd, lParam);
}
}
return 0;
case WM_SIZE:
{
Main_SizeChildren(hWnd);
}
break;
case WM_LBUTTONDOWN:
SetCapture(hWnd);
return 0;
case WM_LBUTTONUP:
ReleaseCapture();
return 0;
case WM_MOUSEMOVE:
//if the left button is down
if(GetKeyState(VK_LBUTTON) & 0x8000)
{
RECT rc;
GetClientRect(hWnd, &rc);
//don't do anything if we are already at the minimum size
if((g_uPosition == MIN_SIZE) && (LOWORD(lParam) <= MIN_SIZE))
break;
//don't do anything if we are already at the maximum size
if(((rc.right - g_uPosition) == MIN_SIZE) && (LOWORD(lParam) >= g_uPosition))
break;
g_uPosition = LOWORD(lParam);
//check for min and max
if(g_uPosition < MIN_SIZE)
g_uPosition = MIN_SIZE;
if((rc.right - g_uPosition) < MIN_SIZE)
g_uPosition = rc.right - MIN_SIZE;
Main_SizeChildren(hWnd);
}
break;
case WM_COMMAND:
return Main_OnCommand(hWnd, wParam, lParam);
case WM_DESTROY:
//tell the list to release its current folder
List_ReleaseCurrentFolder();
PostQuitMessage(0);
break;
case WM_NCDESTROY:
g_pMalloc->Release();
g_pMalloc = NULL;
break;
case WM_SYSCOLORCHANGE:
{
HBRUSH hbr = GetSysColorBrush(COLOR_3DFACE);
hbr = (HBRUSH)SetClassLongPtr(hWnd, GCLP_HBRBACKGROUND, (LONG_PTR)hbr);
if(hbr)
DeleteObject(hbr);
}
break;
case WM_INITMENUPOPUP:
Main_UpdateMenu(hWnd, (HMENU)wParam);
//fall through
case WM_DRAWITEM:
case WM_MENUCHAR:
case WM_MEASUREITEM:
if(g_pcm2)
{
g_pcm2->HandleMenuMsg(uMessage, wParam, lParam);
}
break;
case WM_CONTEXTMENU:
{
POINT ptScreen;
POINT ptClient;
ptScreen.x = GET_X_LPARAM(lParam);
ptScreen.y = GET_Y_LPARAM(lParam);
ptClient = ptScreen;
ScreenToClient(hWnd, &ptClient);
HWND hwndOver = ChildWindowFromPoint(hWnd, ptClient);
if(GetDlgItem(hWnd, IDC_TREEVIEW) == hwndOver)
{
Tree_DoContextMenu(hwndOver, &ptScreen);
}
else if(GetDlgItem(hWnd, IDC_LISTVIEW) == hwndOver)
{
List_DoContextMenu(hwndOver, &ptScreen);
}
}
break;
default:
break;
}
return DefWindowProc(hWnd, uMessage, wParam, lParam);
}
/******************************************************************************
Main_CreateImageList
******************************************************************************/
HIMAGELIST Main_CreateImageList(BOOL fLarge)
{
HIMAGELIST hImageList;
SHFILEINFO sfi;
//get the system image list
hImageList = (HIMAGELIST)SHGetFileInfo( TEXT("C:\\"),
0,
&sfi,
sizeof(SHFILEINFO),
SHGFI_SYSICONINDEX | (fLarge ? 0 : SHGFI_SMALLICON));
return hImageList;
}
/******************************************************************************
Main_SizeChildren
******************************************************************************/
void Main_SizeChildren(HWND hwndParent)
{
RECT rc;
GetClientRect(hwndParent, &rc);
if(!g_uPosition)
{
g_uPosition = rc.right/3;
}
//resize the TreeView control
MoveWindow( GetDlgItem(hwndParent, IDC_TREEVIEW),
0,
0,
g_uPosition - GAP_SIZE,
rc.bottom,
TRUE);
//resize the ListView
MoveWindow( GetDlgItem(hwndParent, IDC_LISTVIEW),
g_uPosition,
0,
rc.right - g_uPosition,
rc.bottom,
TRUE);
}
/******************************************************************************
Main_UpdateMenu
******************************************************************************/
void Main_UpdateMenu(HWND hWnd, HMENU hMenu)
{
UINT uID = 0;
DWORD dwStyle;
//uncheck all of these guys
CheckMenuItem(hMenu, IDM_LARGE_ICONS, MF_BYCOMMAND | MF_UNCHECKED);
CheckMenuItem(hMenu, IDM_SMALL_ICONS, MF_BYCOMMAND | MF_UNCHECKED);
CheckMenuItem(hMenu, IDM_LIST, MF_BYCOMMAND | MF_UNCHECKED);
//check the appropriate view menu item
dwStyle = GetWindowLong(GetDlgItem(hWnd, IDC_LISTVIEW), GWL_STYLE);
switch(dwStyle & LVS_TYPEMASK)
{
case LVS_ICON:
uID = IDM_LARGE_ICONS;
break;
case LVS_SMALLICON:
uID = IDM_SMALL_ICONS;
break;
case LVS_LIST:
uID = IDM_LIST;
break;
}
CheckMenuRadioItem(hMenu, IDM_LARGE_ICONS, IDM_LIST, uID, MF_BYCOMMAND | MF_CHECKED);
}
/**************************************************************************
Main_OnCommand()
**************************************************************************/
LRESULT Main_OnCommand(HWND hWnd, WPARAM wParam, LPARAM lParam)
{
UNREFERENCED_PARAMETER(lParam);
switch (GET_WM_COMMAND_ID(wParam, lParam))
{
case IDM_EXIT:
DestroyWindow(hWnd);
break;
case IDM_LARGE_ICONS:
{
HWND hwndListView = GetDlgItem(hWnd, IDC_LISTVIEW);
DWORD dwStyle = GetWindowLong(hwndListView, GWL_STYLE);
SetWindowLong(hwndListView, GWL_STYLE, (dwStyle & ~LVS_TYPEMASK) | LVS_ICON);
}
break;
case IDM_SMALL_ICONS:
{
HWND hwndListView = GetDlgItem(hWnd, IDC_LISTVIEW);
DWORD dwStyle = GetWindowLong(hwndListView, GWL_STYLE);
SetWindowLong(hwndListView, GWL_STYLE, (dwStyle & ~LVS_TYPEMASK) | LVS_SMALLICON);
}
break;
case IDM_LIST:
{
HWND hwndListView = GetDlgItem(hWnd, IDC_LISTVIEW);
DWORD dwStyle = GetWindowLong(hwndListView, GWL_STYLE);
SetWindowLong(hwndListView, GWL_STYLE, (dwStyle & ~LVS_TYPEMASK) | LVS_LIST);
}
break;
case IDM_REFRESH:
List_Refresh(GetDlgItem(hWnd, IDC_LISTVIEW));
break;
}
return 0;
}
/**************************************************************************
Pidl_GetNextItem()
**************************************************************************/
inline LPITEMIDLIST Pidl_GetNextItem(LPCITEMIDLIST pidl)
{
if(pidl)
return (LPITEMIDLIST)(LPBYTE)(((LPBYTE)pidl) + pidl->mkid.cb);
else
return NULL;
}
/**************************************************************************
Pidl_Create()
**************************************************************************/
LPITEMIDLIST Pidl_Create(UINT cbSize)
{
LPITEMIDLIST pidl = NULL;
pidl = (LPITEMIDLIST) g_pMalloc->Alloc(cbSize);
if(pidl)
ZeroMemory(pidl, cbSize);
return pidl;
}
/**************************************************************************
Pidl_GetSize()
**************************************************************************/
UINT Pidl_GetSize(LPCITEMIDLIST pidl)
{
UINT cbTotal = 0;
LPITEMIDLIST pidlTemp = (LPITEMIDLIST) pidl;
if(pidlTemp)
{
while(pidlTemp->mkid.cb)
{
cbTotal += pidlTemp->mkid.cb;
pidlTemp = Pidl_GetNextItem(pidlTemp);
}
// Requires a 16 bit zero value for the NULL terminator
cbTotal += 2 * sizeof(BYTE);
}
return cbTotal;
}
/**************************************************************************
Pidl_Copy()
**************************************************************************/
LPITEMIDLIST Pidl_Copy(LPCITEMIDLIST pidlSource)
{
LPITEMIDLIST pidlTarget = NULL;
UINT cbSource = 0;
if(NULL == pidlSource)
return NULL;
//
// Allocate the new ITEMIDLIST
//
cbSource = Pidl_GetSize(pidlSource);
pidlTarget = (LPITEMIDLIST) g_pMalloc->Alloc(cbSource);
if(!pidlTarget)
return NULL;
//
// Copy the source to the target
//
CopyMemory(pidlTarget, pidlSource, cbSource);
return pidlTarget;
}
/**************************************************************************
Pidl_Concatenate()
**************************************************************************/
LPITEMIDLIST Pidl_Concatenate(LPCITEMIDLIST pidl1, LPCITEMIDLIST pidl2)
{
LPITEMIDLIST pidlNew;
UINT cb1 = 0,
cb2 = 0;
//
// Pidl1 can possibly be NULL if it points to the desktop. Since we only
// need a single NULL terminator, we remove the extra 2 bytes from the
// size of the first ITEMIDLIST.
//
if(pidl1)
cb1 = Pidl_GetSize(pidl1) - (2 * sizeof(BYTE));
cb2 = Pidl_GetSize(pidl2);
//
// Create a new ITEMIDLIST that is the size of both pidl1 and pidl2, then
// copy pidl1 and pidl2 to the new list.
//
pidlNew = Pidl_Create(cb1 + cb2);
if(pidlNew)
{
if(pidl1)
CopyMemory(pidlNew, pidl1, cb1);
CopyMemory(((LPBYTE)pidlNew) + cb1, pidl2, cb2);
}
return pidlNew;
}
/**************************************************************************
Pidl_Free()
**************************************************************************/
void Pidl_Free(LPITEMIDLIST pidl)
{
if(pidl)
g_pMalloc->Free(pidl);
}
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