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- // 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.
- //
- // Copyright (C) 1993-1995 Microsoft Corporation. All Rights Reserved.
- //
- // MODULE: blandmdi.c
- //
- // PURPOSE: Implement the window procedure for the main application
- // window.
- //
- // FUNCTIONS:
- // WndProc - Processes messages for the main window.
- // MsgCreate - To create the MDI client window.
- // MsgCommand - Handle the WM_COMMAND messages for the main window.
- // MsgDestroy - Handles the WM_DESTROY message by calling
- // PostQuitMessage().
- // CmdFileNew - To create a new mdi child window.
- // CmdWindowTile - To tile the mdi child windows.
- // CmdWindowCascade - To cascade the mdi child windows.
- // CmdWindowIcons - To arrage the mdi child icons.
- // CmdWindowCloseAll - To close all of the mdi child windows.
- // CmdExit - Handles the file exit command by calling destory
- // window on the main window.
- //
- // COMMENTS:
- // Message dispatch table -
- // For every message to be handled by the main window procedure
- // place the message number and handler function pointer in
- // rgmsd (the message dispatch table). Place the prototype
- // for the function in globals.h and the definition of the
- // function in the appropriate module.
- // Command dispatch table -
- // For every command to be handled by the main window procedure
- // place the command number and handler function pointer in
- // rgcmd (the command dispatch table). Place the prototype
- // for the function in globals.h and the definition of the
- // function in the appropriate module.
- // Globals.h Contains the definitions of the structures and dispatch.c
- // contains the functions that use these structures.
- //
-
- #include <windows.h> // required for all Windows applications
- #include <windowsx.h>
- #ifdef WIN16
- #include "win16ext.h" // required only for win16 applications
- #endif
- #include "globals.h" // prototypes specific to this application
- #include "resource.h"
-
- // Main window message table definition.
- MSD rgmsd[] =
- {
- {WM_INITMENU, MsgInitMenu},
- {WM_COMMAND, MsgCommand},
- {WM_CREATE, MsgCreate},
- {WM_DESTROY, MsgDestroy}
- };
-
- MSDI msdiMain =
- {
- sizeof(rgmsd) / sizeof(MSD),
- rgmsd,
- edwpMDIFrame
- };
-
-
- // Main window command table definition.
- CMD rgcmd[] =
- {
- {IDM_FILENEW, CmdFileNew},
- {IDM_FILECLOSE, CmdFileClose},
- {IDM_EXIT, CmdExit},
- {IDM_ABOUT, CmdAbout},
- {IDM_WINDOWTILE, CmdWindowTile},
- {IDM_WINDOWCASCADE, CmdWindowCascade},
- {IDM_WINDOWICONS, CmdWindowIcons},
- {IDM_WINDOWCLOSEALL,CmdWindowCloseAll}
- };
-
- CMDI cmdiMain =
- {
- sizeof(rgcmd) / sizeof(CMD),
- rgcmd,
- edwpMDIFrame
- };
-
- // Module specific globals
-
- HWND hwndMDIClient = NULL; // The MDI client window handle.
- UINT cUntitled = 1;
- UINT cOpen = 0;
- extern char szChildName[];
-
-
- //
- // FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Processes messages for the main window.
- //
- // PARAMETERS:
- // hwnd - window handle
- // uMessage - message number
- // wparam - additional information (dependant on message number)
- // lparam - additional information (dependant on message number)
- //
- // RETURN VALUE:
- // The return value depends on the message number. If the message
- // is implemented in the message dispatch table, the return value is
- // the value returned by the message handling function. Otherwise,
- // the return value is the value returned by the default window procedure.
- //
- // COMMENTS:
- // Call the DispMessage() function with the main window's message dispatch
- // information (msdiMain) and the message specific information.
- //
-
- LRESULT CALLBACK WndProc(HWND hwnd,
- UINT uMessage,
- WPARAM wparam,
- LPARAM lparam)
- {
- return DispMessage(&msdiMain, hwnd, uMessage, wparam, lparam);
- }
-
-
- //
- // FUNCTION: MsgCommand(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Handle the WM_COMMAND messages for the main window.
- //
- // PARAMETERS:
- // hwnd - window handle
- // uMessage - WM_COMMAND (Unused)
- // GET_WM_COMMAND_ID(wparam, lparam) - Command identifier
- // GET_WM_COMMAND_HWND(wparam, lparam) - Control handle
- //
- // RETURN VALUE:
- // The return value depends on the message number. If the message
- // is implemented in the message dispatch table, the return value is
- // the value returned by the message handling function. Otherwise,
- // the return value is the value returned by the default window procedure.
- //
- // COMMENTS:
- // Call the DispCommand() function with the main window's command dispatch
- // information (cmdiMain) and the command specific information.
- //
-
- #pragma argsused
- LRESULT MsgCommand(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- return DispCommand(&cmdiMain, hwnd, wparam, lparam);
- }
-
-
- //
- // FUNCTION: MsgCreate(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: To create an MDI client window.
- //
- // PARAMETERS:
- // hwnd - The window handing the message.
- // uMessage - WM_CREATE (unused)
- // wparam - Message specific data (unused).
- // lparam - Message specific data (unused).
- //
- // RETURN VALUE:
- // Always returns 0 - message handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT MsgCreate(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- CLIENTCREATESTRUCT ccs = {0};
-
- // Find window menu where children will be listed
- ccs.hWindowMenu = GetSubMenu(GetMenu(hwnd), WINDOWMENU);
- ccs.idFirstChild = IDM_WINDOWCHILD;
-
- // Create the MDI client filling the client area
- hwndMDIClient = CreateWindow("mdiclient",
- NULL,
- WS_CHILD | WS_CLIPCHILDREN | WS_VSCROLL |
- WS_HSCROLL,
- 0, 0, 0, 0,
- hwnd,
- (HMENU)0xCAC,
- hInst,
- (LPVOID)&ccs);
-
- ShowWindow(hwndMDIClient, SW_SHOW);
-
- return 0;
- }
-
-
- //
- // FUNCTION: MsgInitMenu(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Enable/Disable the close menu command.
- //
- // PARAMETERS:
- //
- // hwnd - Window handle
- // uMessage - Message number (Unused)
- // wparam - HMENU - The menu about to be activated
- // lparam - Extra data (Unused)
- //
- // RETURN VALUE:
- //
- // 0 - The message was handled.
- // 1 - The message was not handled - wrong menu.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT MsgInitMenu(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- if (GetMenu(hwnd) == (HMENU)wparam)
- {
- UINT mf = (cOpen) ? MF_ENABLED : MF_GRAYED;
-
- EnableMenuItem((HMENU)wparam, IDM_FILECLOSE, mf);
-
- return 0;
- }
- else
- {
- return 1;
- }
- }
-
-
- //
- // FUNCTION: MsgDestroy(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Calls PostQuitMessage().
- //
- // PARAMETERS:
- //
- // hwnd - Window handle (Unused)
- // uMessage - Message number (Unused)
- // wparam - Extra data (Unused)
- // lparam - Extra data (Unused)
- //
- // RETURN VALUE:
- //
- // Always returns 0 - Message handled
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT MsgDestroy(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- PostQuitMessage(0);
- return 0;
- }
-
-
- //
- // FUNCTION: CmdFileNew(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: To create a new mdi child window.
- //
- // PARAMETERS:
- // hwnd - The window handling the command.
- // wCommand - IDM_FILENEW (unused)
- // hwndCtrl - NULL (unused).
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdFileNew(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- HWND hwndChild;
- char rgch[15];
- DWORD dwVersion;
-
- wsprintf(rgch,"Untitled%d", cUntitled);
-
- // Create the MDI child window
-
- // Windows NT and Windows 95 present different options for creating
- // an MDI child window. While using the WM_MDICREATE message will
- // work on both Windows versions, Windows 95 presents a new window
- // style which simplifies the process. Here the function uses the
- // method apropriate for the system it's running on.
- dwVersion = GetVersion();
- if ((dwVersion < 0x80000000L) || (LOBYTE(LOWORD(dwVersion)) < 4))
- {
- // This is Windows NT or Win32s, so use the WM_MDICREATE message
- MDICREATESTRUCT mcs;
-
- mcs.szClass = szChildName; // window class name
- mcs.szTitle = rgch; // window title
- mcs.hOwner = hInst; // owner
- mcs.x = CW_USEDEFAULT; // x position
- mcs.y = CW_USEDEFAULT; // y position
- mcs.cx = CW_USEDEFAULT; // width
- mcs.cy = CW_USEDEFAULT; // height
- mcs.style = 0; // window style
- mcs.lParam = 0; // lparam
-
- hwndChild = (HWND) SendMessage(hwndMDIClient,
- WM_MDICREATE,
- 0,
- (LPARAM)(LPMDICREATESTRUCT) &mcs);
- }
- else
- {
- hwndChild = CreateWindowEx(WS_EX_MDICHILD, // EX window style
- szChildName, // window class name
- rgch, // window title
- 0, // window style
- CW_USEDEFAULT, // x position
- CW_USEDEFAULT, // y position
- CW_USEDEFAULT, // width
- CW_USEDEFAULT, // height
- hwndMDIClient, // parent
- NULL, // menu (child ID)
- hInst, // owner
- 0); // lparam
- }
-
- if (hwndChild != NULL)
- ShowWindow(hwndChild, SW_SHOW);
-
- cUntitled++;
- cOpen++;
- return 0;
- }
-
-
- //
- // FUNCTION: CmdExit(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: Exit the application.
- //
- // PARAMETERS:
- // hwnd - The window.
- // wCommand - IDM_EXIT (unused)
- // wNotify - Notification number (unused)
- // hwndCtrl - NULL (unused)
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdExit(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- DestroyWindow(hwnd);
- return 0;
- }
-
-
- //
- // FUNCTION: CmdFileClose(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: To close all of the mdi child windows.
- //
- // PARAMETERS:
- // hwnd - The window handling the command.
- // wCommand - IDM_FILECLOSE (unused).
- // hwndCtrl - NULL (unused).
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdFileClose(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- HWND hwndT;
-
- hwndT = (HWND)SendMessage(hwndMDIClient, WM_MDIGETACTIVE, 0, 0L);
- if (hwndT != NULL)
- SendMessage(hwndMDIClient, WM_MDIDESTROY, (WPARAM)hwndT, 0L);
-
- return 0;
- }
-
-
- //
- // FUNCTION: CmdWindowTile(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: To tile the mdi child windows.
- //
- // PARAMETERS:
- // hwnd - The window handling the command.
- // wCommand - IDM_WINDOWTILE (unused).
- // hwndCtrl - NULL (unused).
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdWindowTile(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- SendMessage(hwndMDIClient, WM_MDITILE, 0, 0L);
-
- return 0;
- }
-
- //
- // FUNCTION: CmdWindowCascade(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: To cascade the mdi child windows.
- //
- // PARAMETERS:
- // hwnd - The window handling the command.
- // wCommand - IDM_WINDOWCASCADE (unused).
- // hwndCtrl - NULL (unused).
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdWindowCascade(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- SendMessage(hwndMDIClient, WM_MDICASCADE, 0, 0L);
-
- return 0;
- }
-
- //
- // FUNCTION: CmdWindowIcons(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: To arrage the mdi child icons.
- //
- // PARAMETERS:
- // hwnd - The window handling the command.
- // wCommand - IDM_WINDOWICONS (unused).
- // hwndCtrl - NULL (unused).
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdWindowIcons(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- SendMessage(hwndMDIClient, WM_MDIICONARRANGE, 0, 0L);
-
- return 0;
- }
-
- //
- // FUNCTION: CmdWindowCloseAll(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: To close all of the mdi child windows.
- //
- // PARAMETERS:
- // hwnd - The window handling the command.
- // wCommand - IDM_WINDOWCLOSEALL (unused).
- // hwndCtrl - NULL (unused).
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdWindowCloseAll(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- HWND hwndT;
-
- // As long as the MDI client has a child, destroy it
- #pragma warn -pia
- while (hwndT = GetWindow(hwndMDIClient, GW_CHILD))
- {
-
- // Skip the icon and title windows
- while (hwndT && GetWindow(hwndT, GW_OWNER))
- hwndT = GetWindow(hwndT, GW_HWNDNEXT);
-
- if (hwndT)
- SendMessage(hwndMDIClient, WM_MDIDESTROY, (WPARAM)hwndT, 0L);
- else
- break;
- }
- #pragma warn .pia
-
- return 0;
- }
-
-