[explorer_new]

- call ShellDDEInit, FileIconInit and WinList_Init while initializing
- Calling ShellDDEInit fixes cases like pressing Explore in a folder context menu from a file open dialog (before this it just hanged)
- We also need to call FileIconInit in order to initialize the shell icons properly. Before this Shell_GetImageLists called FileIconInit in case it was not called
- Calling WinList_Init should make CLSID_ShellWindows work but it fails for now. CLSID_ShellWindows is needed in cases like opening a second time My computer from desktop should activates the existing My computer window and it is also needed for SHOpenFolderAndSelectItems in order to work

svn path=/trunk/; revision=61064

reactos/base/shell/explorer-new/explorer.c

@@ -410,6 +410,15 @@ _tWinMain(IN HINSTANCE hInstance,
 
     if (CreateShellDesktop)
     {
+        /* Initialize shell dde support */
+        ShellDDEInit(TRUE);
+
+        /* Initialize shell icons */
+        FileIconInit(TRUE);
+
+        /* Initialize CLSID_ShellWindows class */
+        WinList_Init();
+
         if (RegisterTrayWindowClass() && RegisterTaskSwitchWndClass())
         {
             Tray = CreateTrayWindow();

reactos/include/psdk/shlobj_undoc.h

@@ -755,6 +755,10 @@ BOOL WINAPI ILGetDisplayNameEx(IShellFolder *psf, LPCITEMIDLIST pidl, LPVOID pat
 #define ILGDN_NORMAL      1
 #define ILGDN_INFOLDER    2
 
+BOOL WINAPI FileIconInit(BOOL bFullInit);
+void WINAPI ShellDDEInit(BOOL bInit);
+DWORD WINAPI WinList_Init(void);
+
 HANDLE WINAPI SHCreateDesktop(IShellDesktopTray*);
 BOOL WINAPI SHDesktopMessageLoop(HANDLE);