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- /*+==========================================================================
- File: PERCLIEN.CPP
-
- Summary: Main implementation for the PERCLIEN client application. This
- client loads and accesses the connectable COPageList COM
- object housed in a separate in-process COM Server (PERSERVE
- built in the sibling PERSERVE directory). The COPageList COM
- object is persistent and manages the page list data.
-
- Using the data in COPageList, PERCLIEN displays the page list
- and allows the user to create, open, and edit various page
- types kept in the list. The page editing is done in separate
- child windows. Each page type has data that is managed by
- appropriate COM servers. The PERTEXT server houses COTextPage
- COM objects. The PERDRAW server houses CODrawPage COM
- objects. The COPageList, COTextPage, and CODrawPage objects
- each use a different kind of COM object persistence.
- COPageList exposes IPersistStream for its persistence
- features. COTextPage exposes IPersistStreamInit. CODrawPage
- exposes IPersistStorage.
-
- All of the data content in the page list, text pages, and
- draw pages is stored in one compound file managed by this
- PERCLIEN client. Files of this type have the .PAG extension.
-
- To run PERCLIEN you must build the PERSERVE, PERTEXT, and
- PERDRAW samples first.
-
- For a comprehensive tutorial code tour of PERCLIEN's contents
- and offerings see the tutorial PERCLIEN.HTM file. For
- more specific technical details on the internal workings see
- the comments dispersed throughout the PERCLIEN source code.
- For more details on the PERSERVE.DLL that PERCLIEN works with
- see the PERSERVE.HTM file in the main tutorial directory.
- For more details on the PERTEXT.DLL that PERCLIEN works with
- see the PERTEXT.HTM file in the main tutorial directory.
- For more details on the PERDRAW.DLL that PERCLIEN works with
- see the PERDRAW.HTM file in the main tutorial directory.
-
- Classes: CMainWindow.
-
- Functions: InitApplication, WinMain
-
- Origin: 5-24-96: atrent - Editor-inheritance from the STOCLIEN source.
-
- ----------------------------------------------------------------------------
- This file is part of the Microsoft COM Tutorial Code Samples.
-
- Copyright (C) Microsoft Corporation, 1997. All rights reserved.
-
- This source code is intended only as a supplement to Microsoft
- Development Tools and/or on-line documentation. See these other
- materials for detailed information regarding Microsoft code samples.
-
- 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.
- ==========================================================================+*/
-
- /*--------------------------------------------------------------------------
- We include WINDOWS.H for all Win32 applications.
- We include OLE2.H because we will be calling the COM/OLE Libraries.
- We include OLECTL.H because it has definitions for connectable objects.
- We include INITGUID.H only once (here) in the entire app because we
- will be defining GUIDs and want them as constants in the data segment.
- We include COMMDLG.H because we will be using the Open File
- and potentially other Common dialogs.
- We include APPUTIL.H because we will be building this application using
- the convenient Virtual Window and Dialog classes and other
- utility functions in the APPUTIL Library (ie, APPUTIL.LIB).
- We include IPAGES.H and PAGEGUID.H for the common page-related Interface
- class, GUID, and CLSID specifications.
- We include RESDEF.H because it has the resource definitions specific
- to this application.
- We include PAGEFILE.H because it has the C++ class used for compound file
- storage of page list data.
- We include LISTWIN.H because CGuiList creates and uses a CListWin to
- encapsulate the standard listbox control window.
- We include GUILIST.H because it has the C++ class used for GUI display
- of the page list.
- We include PERCLIEN.H because it has the CMainWindow class definition.
- ---------------------------------------------------------------------------*/
- #include <windows.h>
- #include <ole2.h>
- #include <olectl.h>
- #include <initguid.h>
- #include <commdlg.h>
- #include <apputil.h>
- #include <ipages.h>
- #include <pageguid.h>
- #include "resdef.h"
- #include "pagefile.h"
- #include "listwin.h"
- #include "guilist.h"
- #include "perclien.h"
-
-
- // Work storage for the user-entered page title.
- TCHAR g_szPageTitle[PAGE_TITLE_SIZE] = TEXT(PAGE_UNTITLED_STR);
-
-
- /*M+M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M
- Method: CMainWindow::CMainWindow
-
- Summary: CMainWindow Constructor.
-
- Args: .
-
- Returns: .
- M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M-M*/
- CMainWindow::CMainWindow()
- {
- // Ensure these member variable strings are null strings.
- m_szFileName[0] = 0;
- m_szFileTitle[0] = 0;
-
- // Fill in the Open File Name Common Dialog's OPENFILENAME structure.
- m_ofnFile.lStructSize = sizeof(OPENFILENAME);
- m_ofnFile.hwndOwner = m_hWnd;
- m_ofnFile.hInstance = m_hInst;
- m_ofnFile.lpstrFilter = TEXT(OFN_DEFAULTFILES_STR);
- m_ofnFile.lpstrCustomFilter = NULL;
- m_ofnFile.nMaxCustFilter = 0;
- m_ofnFile.nFilterIndex = 1;
- m_ofnFile.lpstrFile = m_szFileName;
- m_ofnFile.nMaxFile = MAX_PATH;
- m_ofnFile.lpstrInitialDir = TEXT(".");
- m_ofnFile.lpstrFileTitle = m_szFileTitle;
- m_ofnFile.nMaxFileTitle = MAX_PATH;
- m_ofnFile.lpstrTitle = TEXT(OFN_DEFAULTTITLE_STR);
- m_ofnFile.lpstrDefExt = NULL;
- m_ofnFile.Flags = OFN_HIDEREADONLY;
-
- m_pGuiList = NULL;
- }
-
-
- /*M+M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M
- Method: CMainWindow::~CMainWindow
-
- Summary: CMainWindow Destructor. Destruction of the main window
- indicates that the application should quit and thus the
- PostQuitMessage API is called.
-
- Args: .
-
- Returns: .
- M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M-M*/
- CMainWindow::~CMainWindow()
- {
- // CMainWindow is derived from CVirWindow which traps the WM_DESTROY
- // message and causes a delete of CMainWindow which in turn causes this
- // destructor to run. The WM_DESTROY results when the window is destoyed
- // after a close of the window. Prior to exiting the main message loop:
-
- // We delete the CGuiList object that was made in InitInstance.
- DELETE_POINTER(m_pGuiList);
-
- // We then post a WM_QUIT message to cause an exit of the main
- // message loop and an exit of this instance of the application.
- PostQuitMessage(0);
- }
-
-
- /*M+M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M
- Method: CMainWindow::InitInstance
-
- Summary: Instantiates an instance of the main application window.
- This method must be called only once, immediately after
- window class construction. We take care to delete 'this'
- CMainWindow if we must return the error condition FALSE.
-
- Args: HINSTANCE hInstance,
- Handle of the application instance.
- LPSTR pszCmdLine,
- Pointer to the application's invocation command line.
- int nCmdShow)
- Command to pass to ShowWindow.
-
- Modifies: m_szHelpFile
-
- Returns: BOOL.
- TRUE if succeeded.
- FALSE if failed.
- M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M-M*/
- BOOL CMainWindow::InitInstance(
- HINSTANCE hInstance,
- LPSTR pszCmdLine,
- int nCmdShow)
- {
- BOOL bOk = FALSE;
- HWND hWnd = NULL;
- HRESULT hr = E_FAIL;
-
- // Create the CGuiList C++ object.
- m_pGuiList = new CGuiList;
-
- if (NULL != m_pGuiList)
- {
- // Note, the Create method sets the m_hWnd member so we don't
- // need to set it explicitly here first. Here is the create of this
- // window. Size the window reasonably. Create sets both m_hInst and
- // m_hWnd. This creates the main client window.
- hWnd = Create(
- TEXT(MAIN_WINDOW_CLASS_NAME_STR),
- TEXT(MAIN_WINDOW_TITLE_STR),
- WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX
- | WS_MAXIMIZEBOX | WS_THICKFRAME,
- CW_USEDEFAULT,
- CW_USEDEFAULT,
- ::GetSystemMetrics(SM_CXSCREEN)*1/3,
- ::GetSystemMetrics(SM_CYSCREEN)*1/3,
- NULL,
- NULL,
- hInstance);
- if (NULL != hWnd)
- {
- if (pszCmdLine[0] == 0)
- pszCmdLine = NULL;
-
- #if defined(UNICODE)
- {
- WCHAR wszUc[MAX_PATH];
-
- if (NULL != pszCmdLine)
- {
- // Convert from Ansi to Unicode.
- AnsiToUc(pszCmdLine, wszUc, MAX_PATH);
- // Init the new GuiList.
- bOk = m_pGuiList->Init(m_hInst, m_hWnd, wszUc);
- }
- else
- bOk = m_pGuiList->Init(m_hInst, m_hWnd, NULL);
- }
- #else
- // Init the new GuiList.
- bOk = m_pGuiList->Init(m_hInst, m_hWnd, pszCmdLine);
- #endif
-
- if (bOk)
- {
- // Ensure the new window is shown on screen and content
- // is painted.
- ::ShowWindow(m_hWnd, nCmdShow);
- ::UpdateWindow(m_hWnd);
-
- // Build a path to where the help file should be (it should be in
- // the same directory as the .EXE but with the .HTM extension).
- MakeFamilyPath(hInstance, m_szHelpFile, TEXT(HELP_FILE_EXT));
-
- // Try to open the page list compound file and populate the
- // main page list. Open either the default PERCLIEN.PAG
- // or the one specified on the invocation command line.
- // Load will create/load the default PERCLIEN.PAG if no specified
- // .PAG file is found.
- hr = m_pGuiList->Load();
- if (SUCCEEDED(hr))
- {
- // If the COPageList COM object was created and reconstituted
- // by loading the .PAG file then show its Page List.
- hr = m_pGuiList->Show(0);
- }
- bOk = SUCCEEDED(hr);
- if (!bOk)
- HrMsgId(m_hInst, m_hWnd, IDS_NOSERVER, hr);
- }
- }
- }
-
- if (!bOk)
- {
- DELETE_POINTER(m_pGuiList);
- }
-
- return (bOk);
- }
-
-
- /*M+M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M
- Method: CMainWindow::DoCommand
-
- Summary: Dispatch and handle the main menu commands.
-
- Args: WPARAM wParam,
- First message parameter.
- LPARAM lParam)
- Second message parameter.
-
- Modifies: m_ofnFile, ...
-
- Returns: LRESULT
- Standard Windows WindowProc return value.
- M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M-M*/
- LRESULT CMainWindow::DoCommand(
- WPARAM wParam,
- LPARAM lParam)
- {
- LRESULT lResult = FALSE;
- HMENU hMenu = ::GetMenu(m_hWnd);
-
- switch (LOWORD(wParam))
- {
- //----------------------------------------------------------------------
- // Handle File Menu Commands.
- //----------------------------------------------------------------------
- case IDM_FILE_NEW:
- // Create an empty compound file; ask CGuiList to save itself to it.
- m_pGuiList->New();
- break;
- case IDM_FILE_OPEN:
- // Open existing compound file; ask CGuiList to load itself from it.
- m_pGuiList->Open();
- break;
- case IDM_FILE_SAVE:
- // Ask all pages to save to current compound file.
- m_pGuiList->Save();
- break;
- case IDM_FILE_SAVEAS:
- // Create new compound file and ask all pages to save to it.
- m_pGuiList->SaveAs();
- break;
- case IDM_FILE_EXIT:
- // The user commands us to exit this application so we tell the
- // Main window to close itself.
- ::PostMessage(m_hWnd, WM_CLOSE, 0, 0);
- break;
-
- //----------------------------------------------------------------------
- // Handle Page Menu Commands.
- //----------------------------------------------------------------------
- case IDM_PAGE_OPEN:
- // Open the selected page in the list.
- m_pGuiList->PageOpen();
- break;
- case IDM_PAGE_TITLE:
- // Edit a new title for the selected page in the list.
- m_pGuiList->PageTitle();
- break;
- case IDM_PAGE_NEWTEXT:
- // Create new Text page.
- m_pGuiList->PageAdd(PAGETYPE_TEXT);
- break;
- case IDM_PAGE_NEWDRAW:
- // Create new Drawing page.
- m_pGuiList->PageAdd(PAGETYPE_DRAWING);
- break;
- case IDM_PAGE_DELETE:
- // Delete the selected page in the list.
- m_pGuiList->PageDelete();
- break;
-
- //----------------------------------------------------------------------
- // Handle Help Menu Commands.
- //----------------------------------------------------------------------
- case IDM_HELP_CONTENTS:
- // We have some stubbed support here for bringing up the main online
- // Help for this application. Assumed to be in an .HTM file located
- // next to the .EXE file of the current executable.
- ReadHelp(m_hWnd, m_szHelpFile);
- break;
- case IDM_HELP_TUTORIAL:
- // Call the APPUTIL utility function, ReadTutorial, to Browse the HTML
- // tutorial narrative file associated with this tutorial code sample.
- ReadTutorial(m_hInst, m_hWnd, TEXT(HTML_FILE_EXT));
- break;
- case IDM_HELP_PERSERVE:
- // Call the APPUTIL utility function, ReadTutorial, to Browse the HTML
- // tutorial narrative file associated with the PERSERVE COM server.
- ReadTutorial(m_hInst, m_hWnd, TEXT(SERVER_PERSERVE_STR));
- break;
- case IDM_HELP_PERTEXT:
- // Call the APPUTIL utility function, ReadTutorial, to Browse the HTML
- // tutorial narrative file associated with the PERTEXT COM server.
- ReadTutorial(m_hInst, m_hWnd, TEXT(SERVER_PERTEXT_STR));
- break;
- case IDM_HELP_PERDRAW:
- // Call the APPUTIL utility function, ReadTutorial, to Browse the HTML
- // tutorial narrative file associated with the PERDRAW COM server.
- ReadTutorial(m_hInst, m_hWnd, TEXT(SERVER_PERDRAW_STR));
- break;
- case IDM_HELP_READSOURCE:
- // Call the APPUTIL utility function ReadSource to allow the
- // user to open and read any of the source files of PERCLIEN.
- ReadSource(m_hWnd, &m_ofnFile);
- break;
- case IDM_HELP_ABOUT:
- {
- CAboutBox dlgAboutBox;
-
- // Show the standard About Box dialog for this EXE by telling the
- // dialog C++ object to show itself by invoking its ShowDialog
- // method. Pass it this EXE instance and the parent window handle.
- // Use a dialog resource ID for the dialog template stored in
- // this EXE module's resources.
- dlgAboutBox.ShowDialog(
- m_hInst,
- MAKEINTRESOURCE(IDM_HELP_ABOUT),
- m_hWnd);
- }
- break;
-
- //----------------------------------------------------------------------
- // Handle ListWin Commands (ie, from the child list box control).
- //----------------------------------------------------------------------
- case IDC_LISTWIN:
- switch (HIWORD(wParam))
- {
- case LBN_DBLCLK:
- // User Double Clicked. Open the selected page in the list.
- m_pGuiList->PageOpen();
- break;
- case LBN_SELCHANGE:
- // User changed the page selection.
- break;
- default:
- break;
- }
- break;
-
- default:
- // Defer all messages NOT handled here to the Default Window Proc.
- lResult = ::DefWindowProc(m_hWnd, WM_COMMAND, wParam, lParam);
- break;
- }
-
- return(lResult);
- }
-
-
- /*M+M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M
- Method: CDlgPageProps::DialogProc
-
- Summary: Dialog proc for the Page Properties dialog box. This
- DialogProc method definition overrides the same-named pure
- virtual function in abstract base class CVirDialog thus giving
- unique message dispatching behavior to this derivation of
- CVirDialog. The remaining behavior of CDlgPageProps is
- inherited from CVirDialog and is common to all CVirDialogs.
-
- Args: HWND hWndDlg,
- Handle to the dialog.
- UINT uMsg,
- Windows message to dialog.
- WPARAM wParam,
- First message parameter (word sized).
- LPARAM lParam)
- Second message parameter (long sized).
-
- Returns: BOOL. TRUE if message was handled; FALSE otherwise.
- M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M-M*/
- BOOL CDlgPageProps::DialogProc(
- HWND hWndDlg,
- UINT uMsg,
- WPARAM wParam,
- LPARAM lParam)
- {
- BOOL bResult = TRUE;
- HWND hCtrl = GetDlgItem(hWndDlg, IDC_EDIT_PGTITLE);
-
- switch (uMsg)
- {
- case WM_INITDIALOG:
- SetDlgItemText(hWndDlg, IDC_EDIT_PGTITLE, g_szPageTitle);
- SetFocus(hCtrl);
- bResult = FALSE;
- break;
-
- case WM_COMMAND:
- {
- WORD wCmd = LOWORD(wParam);
-
- if (wCmd == IDOK)
- {
- // Obtain the machine name from the edit control and store
- // it where other functions can get it.
- GetDlgItemText(
- hWndDlg,
- IDC_EDIT_PGTITLE,
- g_szPageTitle,
- PAGE_TITLE_SIZE);
- ::EndDialog(hWndDlg, TRUE);
- }
- else if (wCmd == IDCANCEL)
- ::EndDialog(hWndDlg, FALSE);
- }
- break;
-
- default:
- bResult = FALSE;
- break;
- }
-
- return(bResult);
- }
-
-
- /*M+M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M+++M
- Method: CMainWindow::WindowProc
-
- Summary: Main window procedure for this window object. See CVirWindow
- in the APPUTIL library (APPUTIL.CPP) for details on how this
- method gets called by the global WindowProc.
-
- Args: UINT uMsg,
- Windows message that is "sent" to this window.
- WPARAM wParam,
- First message parameter.
- LPARAM lParam)
- Second message parameter.
-
- Returns: LRESULT
- Standard Windows WindowProc return value.
- M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M---M-M*/
- LRESULT CMainWindow::WindowProc(
- UINT uMsg,
- WPARAM wParam,
- LPARAM lParam)
- {
- LRESULT lResult = FALSE;
-
- switch (uMsg)
- {
- case WM_CREATE:
- break;
-
- case WM_SIZE:
- // Handle a resize of this window.
- m_wWidth = LOWORD(lParam);
- m_wHeight = HIWORD(lParam);
- // Inform CGuiList and CListWin of the change.
- m_pGuiList->Resize(m_wWidth, m_wHeight);
- break;
-
- case WM_COMMAND:
- // Dispatch and handle any Menu command messages received.
- lResult = DoCommand(wParam, lParam);
- break;
-
- case WM_USER_PAGECHANGED:
- // An open page was edit/changed.
- m_pGuiList->PageChanged(lParam);
- break;
-
- case WM_USER_PAGECLOSED:
- // A separate page edit window was closed.
- m_pGuiList->PageClosed(lParam);
- break;
-
- case WM_CHAR:
- if (wParam == 0x1b)
- {
- // Exit this app if user hits ESC key.
- ::PostMessage(m_hWnd, WM_CLOSE, 0, 0);
- }
- break;
-
- case WM_CLOSE:
- // The user selected Close on the main window's System menu
- // or Exit on the File menu.
- // If there is data that has not been saved then ask user
- // if it should be saved. If user cancels then cancel the exit.
- if (IDCANCEL == m_pGuiList->AskSave())
- break;
- case WM_QUIT:
- // If the app is being quit then close any associated help windows.
- default:
- // Defer all messages NOT handled above to the Default Window Proc.
- lResult = ::DefWindowProc(m_hWnd, uMsg, wParam, lParam);
- break;
- }
-
- return(lResult);
- }
-
-
- /*F+F++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- Function: UnicodeOk
-
- Summary: Checks if the platform will handle unicode versions of
- Win32 string API calls.
-
- Args: void
-
- Returns: BOOL
- TRUE if unicode support; FALSE if not.
- ------------------------------------------------------------------------F-F*/
- BOOL UnicodeOk(void)
- {
- BOOL bOk = TRUE;
- TCHAR szUserName[MAX_STRING_LENGTH];
- DWORD dwSize = MAX_STRING_LENGTH;
-
- if (!GetUserName(szUserName, &dwSize))
- bOk = ERROR_CALL_NOT_IMPLEMENTED == GetLastError() ? FALSE : TRUE;
-
- return bOk;
- }
-
-
- /*F+F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F
- Function: InitApplication
-
- Summary: Initializes the application and registers its main window
- class. InitApplication is called only once (in WinMain).
-
- Args: HINSTANCE hInstance)
- Handle to the first instance of the application.
-
- Returns: BOOL.
- TRUE if success.
- FALSE if fail.
- F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F-F*/
- BOOL InitApplication(
- HINSTANCE hInstance)
- {
- BOOL bOk;
- // The window class for all instances of the main frame window.
- WNDCLASSEX wcf;
-
- // Assign the appropriate values for this main frame window class.
- wcf.cbSize = sizeof(WNDCLASSEX);
- wcf.cbClsExtra = 0; // No per-class extra data.
- wcf.cbWndExtra = 0; // No per-window extra data.
- wcf.hInstance = hInstance; // Application module instance.
- wcf.lpfnWndProc = &WindowProc; // Global Window Procedure (defined in
- // APPUTIL for all CVirWindows).
- wcf.hCursor = LoadCursor(NULL, IDC_ARROW); // Load app cursor.
- wcf.hIcon = (HICON) LoadIcon( // Load app icon.
- hInstance,
- TEXT("AppIcon"));
- wcf.hIconSm = (HICON) LoadImage( // Load small icon.
- hInstance,
- TEXT("AppIcon"),
- IMAGE_ICON,
- 16, 16,
- 0);
- wcf.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); // Default backgnd color.
- wcf.style = CS_HREDRAW | CS_VREDRAW; // Class style(s).
- wcf.lpszClassName = TEXT(MAIN_WINDOW_CLASS_NAME_STR); // Class name.
- wcf.lpszMenuName = TEXT(MAIN_WINDOW_CLASS_MENU_STR); // Menu name.
- // Register the window class and return FALSE if unsuccesful.
- bOk = RegisterClassEx(&wcf);
-
- if (bOk)
- {
- // Assign the appropriate values for the text page window class.
- wcf.lpszClassName = TEXT(TEXT_WINDOW_CLASS_NAME_STR); // Class name.
- wcf.lpszMenuName = TEXT(TEXT_WINDOW_CLASS_MENU_STR); // Menu name.
- // Register the window class and return FALSE if unsuccesful.
- bOk = RegisterClassEx(&wcf);
- }
-
- if (bOk)
- {
- // Assign the appropriate values for the drawing page window class.
- wcf.hCursor = LoadCursor( // Load pen cursor.
- hInstance,
- TEXT("PenCursor"));
- wcf.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH); // Backgnd color.
- wcf.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; // Class style(s).
- wcf.lpszClassName = TEXT(DRAW_WINDOW_CLASS_NAME_STR); // Class name.
- wcf.lpszMenuName = TEXT(DRAW_WINDOW_CLASS_MENU_STR); // Menu name.
- // Register the window class and return FALSE if unsuccesful.
- bOk = RegisterClassEx(&wcf);
- }
-
- return (bOk);
- }
-
-
- /*F+F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F+++F
- Function: WinMain
-
- Summary: The Windows main entry point function for this application.
- Initializes the application, the COM Libraries, and starts
- the main application message loop.
-
- Args: HINSTANCE hInstance,
- Instance handle; a new one for each invocation of this app.
- HINSTANCE hPrevInstance,
- Instance handle of the previous instance. NULL in Win32.
- LPSTR pszCmdLine,
- Windows passes a pointer to the application's
- invocation command line.
- int nCmdShow)
- Bits telling the show state of the application.
-
- Returns: int
- msg.wParam (upon exit of message loop).
- FALSE if this instance couldn't initialize and run.
- F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F---F-F*/
- extern "C" int PASCAL WinMain(
- HINSTANCE hInstance,
- HINSTANCE hPrevInstance,
- LPSTR pszCmdLine,
- int nCmdShow)
- {
- CMainWindow* pWin = NULL;
- MSG msg;
- HACCEL hAccel;
- int iRun = FALSE;
-
- // If we were compiled for UNICODE and the platform seems OK with this
- // then proceed. Else we error and exit the app.
- if (UnicodeOk())
- {
- // Call to initialize the COM Library. Use the SUCCEEDED macro
- // to detect success. If fail then exit app with error message.
- // Tell COM that this client process and all subordinate threads
- // will live in an apartment threaded world.
- if (SUCCEEDED(CoInitialize(NULL)))
- {
- // If we succeeded in initializing the COM Library we proceed to
- // initialize the application. If we can't init the application
- // then we signal shut down with an error message exit.
- iRun = InitApplication(hInstance);
- if (iRun)
- {
- // Assume we'll set iRun to TRUE when initialization is done.
- iRun = FALSE;
- // We are still go for running so we try to create a nifty new
- // CMainWindow object for this app instance.
- pWin = new CMainWindow;
- if (NULL != pWin)
- {
- // Now we initialize an instance of the new CMainWindow.
- // This includes creating the main window. Note: if
- // InitInstance fails then it would have already deleted
- // pWin so we wouldn't need to delete it here.
- if (pWin->InitInstance(hInstance, pszCmdLine, nCmdShow))
- {
- // Load the keyboard accelerators from the resources.
- hAccel = LoadAccelerators(hInstance, TEXT("AppAccel"));
- if (NULL != hAccel)
- {
- // Signal App Initialization is successfully done.
- iRun = TRUE;
- }
- }
- }
- }
-
- if (iRun)
- {
- // If we initialized the app instance properly then we are still
- // go for running. We then start up the main message pump for
- // the application.
- while (GetMessage(&msg, NULL, 0, 0))
- {
- if (!TranslateAccelerator(pWin->GetHwnd(), hAccel, &msg))
- {
- TranslateMessage(&msg);
- DispatchMessage(&msg);
- }
- }
-
- // We also ask COM to unload any unused COM Servers, including our
- // friend, PERSERVE.
- CoFreeUnusedLibraries();
-
- // We'll pass to Windows the reason why we exited the message loop.
- iRun = msg.wParam;
- }
- else
- {
- // We failed to Initialize the application. Put up error message
- // box saying that application couldn't be initialized. Parent
- // window is desktop (ie, NULL).
- ErrorBox(hInstance, NULL, IDS_APPINITFAILED);
- DELETE_POINTER(pWin);
- }
-
- // We're exiting this app (either normally or by init failure) so
- // shut down the COM Library.
- CoUninitialize();
- }
- else
- {
- // We failed to Initialize the COM Library. Put up error message box
- // saying that COM Library couldn't be initialized. Parent window
- // is desktop (ie, NULL).
- ErrorBox(hInstance, NULL, IDS_COMINITFAILED);
- }
- }
- else
- {
- // If we were compiled for UNICODE but the platform has problems with
- // this then indicate an error and exit the app immediately.
- CHAR szMsg[MAX_STRING_LENGTH];
-
- if (LoadStringA(
- hInstance,
- IDS_NOUNICODE,
- szMsg,
- MAX_STRING_LENGTH))
- {
- MessageBoxA(
- NULL,
- szMsg,
- ERROR_TITLE_STR,
- MB_OK | MB_ICONEXCLAMATION);
- }
- }
-
- return iRun;
- }
-