reactos/dll/cpl/desk/desk.c

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