dll/cpl/desk/desk.c

   1 /*
   2  * COPYRIGHT:       See COPYING in the top level directory
   3  * PROJECT:         ReactOS Display Control Panel
   4  * FILE:            dll/cpl/desk/desk.c
   5  * PURPOSE:         ReactOS Display Control Panel
   6  *
   7  * PROGRAMMERS:     Trevor McCort (lycan359@gmail.com)
   8  */
   9
  10 #include "desk.h"
  11
  12 #define NUM_APPLETS    (1)
  13
  14 static LONG APIENTRY DisplayApplet(HWND hwnd, UINT uMsg, LPARAM wParam, LPARAM lParam);
  15
  16 INT_PTR CALLBACK BackgroundPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
  17 INT_PTR CALLBACK ScreenSaverPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
  18 INT_PTR CALLBACK AppearancePageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
  19 INT_PTR CALLBACK SettingsPageProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);
  20 UINT CALLBACK SettingsPageCallbackProc(HWND hwnd, UINT uMsg, LPPROPSHEETPAGE ppsp);
  21
  22 HINSTANCE hApplet = 0;
  23 HWND hCPLWindow;
  24
  25 /* Applets */
  26 APPLET Applets[NUM_APPLETS] =
  27 {
  28     {
  29         IDC_DESK_ICON,
  30         IDS_CPLNAME,
  31         IDS_CPLDESCRIPTION,
  32         DisplayApplet
  33     }
  34 };
  35
  36 HMENU
  37 LoadPopupMenu(IN HINSTANCE hInstance,
  38               IN LPCTSTR lpMenuName)
  39 {
  40     HMENU hMenu, hSubMenu = NULL;
  41
  42     hMenu = LoadMenu(hInstance,
  43                      lpMenuName);
  44
  45     if (hMenu != NULL)
  46     {
  47         hSubMenu = GetSubMenu(hMenu,
  48                               0);
  49         if (hSubMenu != NULL &&
  50             !RemoveMenu(hMenu,
  51                         0,
  52                         MF_BYPOSITION))
  53         {
  54             hSubMenu = NULL;
  55         }
  56
  57         DestroyMenu(hMenu);
  58     }
  59
  60     return hSubMenu;
  61 }
  62
  63 static BOOL CALLBACK
  64 PropSheetAddPage(HPROPSHEETPAGE hpage, LPARAM lParam)
  65 {
  66     PROPSHEETHEADER *ppsh = (PROPSHEETHEADER *)lParam;
  67     if (ppsh != NULL && ppsh->nPages < MAX_DESK_PAGES)
  68     {
  69         ppsh->phpage[ppsh->nPages++] = hpage;
  70         return TRUE;
  71     }
  72
  73     return FALSE;
  74 }
  75
  76 static BOOL
  77 InitPropSheetPage(PROPSHEETHEADER *ppsh, WORD idDlg, DLGPROC DlgProc, LPFNPSPCALLBACK pfnCallback)
  78 {
  79     HPROPSHEETPAGE hPage;
  80     PROPSHEETPAGE psp;
  81
  82     if (ppsh->nPages < MAX_DESK_PAGES)
  83     {
  84         ZeroMemory(&psp, sizeof(psp));
  85         psp.dwSize = sizeof(psp);
  86         psp.dwFlags = PSP_DEFAULT;
  87         if (pfnCallback != NULL)
  88             psp.dwFlags |= PSP_USECALLBACK;
  89         psp.hInstance = hApplet;
  90         psp.pszTemplate = MAKEINTRESOURCE(idDlg);
  91         psp.pfnDlgProc = DlgProc;
  92         psp.pfnCallback = pfnCallback;
  93
  94         hPage = CreatePropertySheetPage(&psp);
  95         if (hPage != NULL)
  96         {
  97             return PropSheetAddPage(hPage, (LPARAM)ppsh);
  98         }
  99     }
 100
 101     return FALSE;
 102 }
 103
 104 static const struct
 105 {
 106     WORD idDlg;
 107     DLGPROC DlgProc;
 108     LPFNPSPCALLBACK Callback;
 109 } PropPages[] =
 110 {
 111     { IDD_BACKGROUND, BackgroundPageProc, NULL },
 112     { IDD_SCREENSAVER, ScreenSaverPageProc, NULL },
 113     { IDD_APPEARANCE, AppearancePageProc, NULL },
 114     { IDD_SETTINGS, SettingsPageProc, SettingsPageCallbackProc },
 115 };
 116
 117 /* Display Applet */
 118 static LONG APIENTRY
 119 DisplayApplet(HWND hwnd, UINT uMsg, LPARAM wParam, LPARAM lParam)
 120 {
 121     HPROPSHEETPAGE hpsp[MAX_DESK_PAGES];
 122     PROPSHEETHEADER psh;
 123     HPSXA hpsxa;
 124     TCHAR Caption[1024];
 125     LONG ret;
 126     UINT i;
 127
 128     UNREFERENCED_PARAMETER(lParam);
 129     UNREFERENCED_PARAMETER(wParam);
 130     UNREFERENCED_PARAMETER(uMsg);
 131     UNREFERENCED_PARAMETER(hwnd);
 132
 133     g_GlobalData.desktop_color = GetSysColor(COLOR_DESKTOP);
 134
 135     LoadString(hApplet, IDS_CPLNAME, Caption, sizeof(Caption) / sizeof(TCHAR));
 136
 137     ZeroMemory(&psh, sizeof(PROPSHEETHEADER));
 138     psh.dwSize = sizeof(PROPSHEETHEADER);
 139     psh.dwFlags = PSH_USECALLBACK | PSH_PROPTITLE;
 140     psh.hwndParent = hCPLWindow;
 141     psh.hInstance = hApplet;
 142     psh.hIcon = LoadIcon(hApplet, MAKEINTRESOURCE(IDC_DESK_ICON));
 143     psh.pszCaption = Caption;
 144     psh.nPages = 0;
 145     psh.nStartPage = 0;
 146     psh.phpage = hpsp;
 147
 148     /* Allow shell extensions to replace the background page */
 149     hpsxa = SHCreatePropSheetExtArray(HKEY_LOCAL_MACHINE, REGSTR_PATH_CONTROLSFOLDER TEXT("\\Desk"), MAX_DESK_PAGES - psh.nPages);
 150
 151     for (i = 0; i != sizeof(PropPages) / sizeof(PropPages[0]); i++)
 152     {
 153         /* Override the background page if requested by a shell extension */
 154         if (PropPages[i].idDlg == IDD_BACKGROUND && hpsxa != NULL &&
 155             SHReplaceFromPropSheetExtArray(hpsxa, CPLPAGE_DISPLAY_BACKGROUND, PropSheetAddPage, (LPARAM)&psh) != 0)
 156         {
 157             /* The shell extension added one or more pages to replace the background page.
 158                Don't create the built-in page anymore! */
 159             continue;
 160         }
 161
 162         InitPropSheetPage(&psh, PropPages[i].idDlg, PropPages[i].DlgProc, PropPages[i].Callback);
 163     }
 164
 165     /* NOTE: Don't call SHAddFromPropSheetExtArray here because this applet only allows
 166              replacing the background page but not extending the applet by more pages */
 167
 168     ret = (LONG)(PropertySheet(&psh) != -1);
 169
 170     if (hpsxa != NULL)
 171         SHDestroyPropSheetExtArray(hpsxa);
 172
 173     return ret;
 174 }
 175
 176
 177 /* Control Panel Callback */
 178 LONG CALLBACK
 179 CPlApplet(HWND hwndCPl, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
 180 {
 181     int i = (int)lParam1;
 182
 183     switch (uMsg)
 184     {
 185         case CPL_INIT:
 186             return TRUE;
 187
 188         case CPL_GETCOUNT:
 189             return NUM_APPLETS;
 190
 191         case CPL_INQUIRE:
 192             {
 193                 CPLINFO *CPlInfo = (CPLINFO*)lParam2;
 194                 CPlInfo->lData = 0;
 195                 CPlInfo->idIcon = Applets[i].idIcon;
 196                 CPlInfo->idName = Applets[i].idName;
 197                 CPlInfo->idInfo = Applets[i].idDescription;
 198             }
 199             break;
 200
 201         case CPL_DBLCLK:
 202             hCPLWindow = hwndCPl;
 203             Applets[i].AppletProc(hwndCPl, uMsg, lParam1, lParam2);
 204             break;
 205     }
 206
 207     return FALSE;
 208 }
 209
 210
 211 BOOL WINAPI
 212 DllMain(HINSTANCE hInstDLL, DWORD dwReason, LPVOID lpvReserved)
 213 {
 214     UNREFERENCED_PARAMETER(lpvReserved);
 215
 216     switch (dwReason)
 217     {
 218         case DLL_PROCESS_ATTACH:
 219             CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
 220             RegisterPreviewControl(hInstDLL);
 221 //        case DLL_THREAD_ATTACH:
 222             hApplet = hInstDLL;
 223             break;
 224
 225         case DLL_PROCESS_DETACH:
 226             UnregisterPreviewControl(hInstDLL);
 227             CoUninitialize();
 228             break;
 229     }
 230
 231     return TRUE;
 232 }