subsys/system/explorer/winefile/desktop.c

   1 /*
   2     Desktop creation example
   3
   4     Silver Blade (silverblade_uk@hotmail.com)
   5     5th July 2003
   6 */
   7
   8 #include <stdio.h>
   9 #include <windows.h>
  10
  11 #include "externals.h"
  12
  13  // Unicode support
  14 #ifdef UNICODE
  15 #define _UNICODE
  16 #endif
  17 #include <tchar.h>
  18
  19
  20 /* GetShellWindow is already present in the header files
  21 static HWND (WINAPI*GetShellWindow)(); */
  22 static BOOL (WINAPI*SetShellWindow)(HWND);
  23
  24
  25 BOOL IsAnyDesktopRunning()
  26 {
  27 /*      POINT pt;*/
  28         HINSTANCE shell32 = GetModuleHandle(TEXT("user32"));
  29
  30         SetShellWindow = (BOOL(WINAPI*)(HWND)) GetProcAddress(shell32, "SetShellWindow");
  31
  32 /* GetShellWindow is already present in the header files
  33         GetShellWindow = (HWND(WINAPI*)()) GetProcAddress(shell32, "GetShellWindow");
  34
  35         if (GetShellWindow) */
  36                 return GetShellWindow() != 0;
  37 /*
  38         pt.x = 0;
  39         pt.y = 0;
  40
  41         return WindowFromPoint(pt) != GetDesktopWindow(); */
  42 }
  43
  44
  45 LRESULT CALLBACK DeskWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
  46 {
  47     switch(uMsg)
  48     {
  49         case WM_CLOSE :
  50         {
  51             // Over-ride close. We need to close desktop some other way.
  52             break;
  53         }
  54
  55         case WM_PAINT :
  56         {
  57             // We'd want to draw the desktop wallpaper here. Need to
  58             // maintain a copy of the wallpaper in an off-screen DC and then
  59             // bitblt (or stretchblt?) it to the screen appropriately. For
  60             // now, though, we'll just draw some text.
  61
  62             PAINTSTRUCT ps;
  63             HDC DesktopDC = BeginPaint(hwnd, &ps);
  64
  65             TCHAR Text [] = TEXT("ReactOS 0.1.2 Desktop Example\nby Silver Blade");
  66
  67             int Width, Height;
  68
  69             Width = GetSystemMetrics(SM_CXSCREEN);
  70             Height = GetSystemMetrics(SM_CYSCREEN);
  71
  72             // This next part could be improved by working out how much
  73             // space the text actually needs...
  74
  75                         {
  76                         RECT r;
  77             r.left = Width - 260;
  78             r.top = Height - 80;
  79             r.right = r.left + 250;
  80             r.bottom = r.top + 40;
  81
  82             SetTextColor(DesktopDC, 0x00ffffff);
  83             SetBkMode(DesktopDC, TRANSPARENT);
  84             DrawText(DesktopDC, Text, -1, &r, DT_RIGHT);
  85                         }
  86
  87             EndPaint(hwnd, &ps);
  88
  89                         break;
  90         }
  91
  92                 case WM_LBUTTONDBLCLK:
  93                         explorer_show_frame(hwnd, SW_SHOWNORMAL);
  94                         break;
  95
  96                 case WM_DESTROY:
  97                         if (SetShellWindow)
  98                                 SetShellWindow(0);
  99                         break;
 100
 101                 default:
 102                     return DefWindowProc(hwnd, uMsg, wParam, lParam);
 103     }
 104
 105         return 0;
 106 }
 107
 108
 109 const TCHAR DesktopClassName[] = TEXT("DesktopWindow");
 110
 111
 112 HWND create_desktop_window(HINSTANCE hInstance)
 113 {
 114     WNDCLASSEX wc;
 115         HWND hwndDesktop;
 116     int Width, Height;
 117
 118         wc.cbSize       = sizeof(WNDCLASSEX);
 119         wc.style        = CS_DBLCLKS;
 120         wc.lpfnWndProc  = &DeskWndProc;
 121         wc.cbClsExtra   = 0;
 122         wc.cbWndExtra   = 0;
 123         wc.hInstance    = hInstance;
 124         wc.hIcon        = LoadIcon(0, IDI_APPLICATION);
 125         wc.hCursor      = LoadCursor(0, IDC_ARROW);
 126         wc.hbrBackground= (HBRUSH) GetStockObject(BLACK_BRUSH);
 127         wc.lpszMenuName = NULL;
 128         wc.lpszClassName= DesktopClassName;
 129         wc.hIconSm      = NULL;
 130
 131         if (!RegisterClassEx(&wc))
 132                 return 0;
 133
 134         Width = GetSystemMetrics(SM_CXSCREEN);
 135         Height = GetSystemMetrics(SM_CYSCREEN);
 136
 137         hwndDesktop = CreateWindowEx(0, DesktopClassName, TEXT("Desktop"),
 138                                                         WS_VISIBLE | WS_POPUP | WS_CLIPCHILDREN,
 139                                                         0, 0, Width, Height,
 140                                                         NULL, NULL, hInstance, NULL);
 141
 142         if (SetShellWindow)
 143                 SetShellWindow(hwndDesktop);
 144
 145         return hwndDesktop;
 146 }
 147
 148
 149 #ifdef _CONSOLE
 150 int main(int argc, char *argv[])
 151 #else
 152 int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nShowCmd)
 153 #endif
 154 {
 155         int ret;
 156     HWND hwndDesktop = 0;
 157
 158 #ifdef _CONSOLE
 159         STARTUPINFO startupinfo;
 160         int nShowCmd = SW_SHOWNORMAL;
 161
 162         HINSTANCE hInstance = GetModuleHandle(NULL);
 163 #endif
 164
 165          // create desktop window and task bar only, if there is no other shell and we are
 166          // the first explorer instance (just in case SetShellWindow() is not supported by the OS)
 167         BOOL startup_desktop = !IsAnyDesktopRunning() && !find_window_class(DesktopClassName);
 168
 169 #ifdef _CONSOLE
 170         if (argc>1 && !strcmp(argv[1],"-desktop"))
 171 #else
 172         if (!lstrcmp(lpCmdLine,TEXT("-desktop")))
 173 #endif
 174                 startup_desktop = TRUE;
 175
 176         if (startup_desktop)
 177         {
 178                 HWND hwndExplorerBar;
 179
 180                 hwndDesktop = create_desktop_window(hInstance);
 181
 182                 if (!hwndDesktop)
 183                 {
 184                         fprintf(stderr,"FATAL: Desktop window could not be initialized properly - Exiting.\n");
 185                         return 1;   // error
 186                 }
 187
 188 #ifdef _CONSOLE
 189                  // call winefile startup routine
 190                 GetStartupInfo(&startupinfo);
 191
 192                 if (startupinfo.dwFlags & STARTF_USESHOWWINDOW)
 193                         nShowCmd = startupinfo.wShowWindow;
 194 #endif
 195
 196                  // Initializing the Explorer Bar
 197                 if (!(hwndExplorerBar=InitializeExplorerBar(hInstance)))
 198                 {
 199                         fprintf(stderr,"FATAL: Explorer bar could not be initialized properly ! Exiting !\n");
 200                         return 1;
 201                 }
 202
 203                  // Load plugins
 204                 if (!LoadAvailablePlugIns(hwndExplorerBar))
 205                 {
 206                         fprintf(stderr,"WARNING: No plugin for desktop bar could be loaded.\n");
 207                 }
 208
 209 #ifndef _DEBUG  //MF: disabled for debugging
 210 #ifdef _CONSOLE
 211             startup(argc, argv); // invoke the startup groups
 212 #else
 213                 {
 214                 char* argv[] = {""};
 215             startup(1, argv);
 216                 }
 217 #endif
 218 #endif
 219         }
 220
 221         ret = explorer_main(hInstance, hwndDesktop, nShowCmd);
 222
 223         ReleaseAvailablePlugIns();
 224
 225         return ret;
 226 }