Windows编程

开发平台：
Visual C++

IMAGEDIT.C：源码内容
							    /***************************************************************************
     *                                                                         *
     *  MODULE      : imagedit.c                                               *
     *                                                                         *
     *  DESCRIPTION : Contains main entry-level routine for ImagEdit.          *
     *                                                                         *
     *  FUNCTIONS   : WinMain ()        -  Program entry point.                *
     *                                                                         *
     *  HISTORY     : 3/14/89 - LR                                             *
     *                                                                         *
     ***************************************************************************/
    
    #include "imagedit.h"
    #include "dialogs.h"
    #include "ids.h"
    
    #include <string.h>
    #include <stdlib.h>
	 #include <windowsx.h>
    #include <commdlg.h>
    
    
    /*
     * External declarations for the Windows variables that contain
     * command line information.
     */
    extern INT __argc;
    extern CHAR **__argv;
    
    
    STATICFN BOOL NEAR InitApplication(VOID);
    STATICFN BOOL NEAR InitInstance(LPSTR lpCmdLine, INT cmdShow);
    STATICFN VOID NEAR PenWinRegister(VOID);
    STATICFN VOID NEAR ReadEnv(VOID);
    STATICFN VOID NEAR WriteEnv(VOID);
    STATICFN VOID NEAR SizeRibbons(HWND hwnd);
    STATICFN VOID NEAR CleanUp(VOID);
    
    static RECT grcAppPos;              // Saves the app's window pos.
    static WORD gmsgHelp;               // Registered help msg from commdlg.dll
    static BOOL fStartAsIcon = FALSE;   // TRUE if app is started minimized.
    
    /*
     * Contains the address of the Pen Windows callback.
     */
    typedef VOID ( APIENTRY *LPFNPENWIN)(WORD, BOOL);
    static LPFNPENWIN lpfnRegisterPenApp;
    
    
    
    /****************************************************************************
     *                                                                          *
     *  FUNCTION :int PASCAL WinMain(hInstance,hPrevInstance,lpCmdLine,cmdShow) *
     *                                                                          *
     *  PURPOSE  :Serves as program entry point and contains message loop       *
     *                                                                          *
     ****************************************************************************/
    
    INT WINAPI
    WinMain(
        HINSTANCE hInstance,
        HINSTANCE hPrevInstance,
        LPSTR lpCmdLine,
        INT nCmdShow)
    {
        MSG msg;
    
        DBGStackReport(TRUE);
    
        ghInst = hInstance;
    
        /* if this is the first instance then call initialization procedure */
        if (!hPrevInstance) {
            if (!InitApplication())
                return FALSE;
        }
    
        if (!InitInstance(lpCmdLine, nCmdShow))
            return FALSE;
    while (GetMessage(&msg, NULL, 0, 0)) {
                if (!TranslateAccelerator(ghwndMain, haccelTbl, &msg)) {
                    TranslateMessage(&msg);
                    DispatchMessage(&msg);
                }
    }
    
        DBGStackReport(FALSE);
    
        /*
         * Return the value from PostQuitMessage.
         */
        return msg.wParam;
    }
    
    
    /****************************************************************************
     *                                                                          *
     *  FUNCTION   : InitApplication()                                          *
     *                                                                          *
     *  PURPOSE    : To create all ImagEdit's window classes, namely those of   *
     *               the parent window, edit window, mode window and "palette"  *
     *               window.                                                    *
     *                                                                          *
     *  RETURNS    : TRUE if class registration was successful, FALSE otherwise *
     *                                                                          *
     *  SIDE EFFECTS: All class variables affected for all windows.             *
     *                                                                          *
     ****************************************************************************/
    
    STATICFN BOOL NEAR InitApplication(VOID)
    {
        WNDCLASS wc;
    
        /* assign values and register the parent window class */
        wc.style = 0;
        wc.lpfnWndProc = MainWndProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = ghInst;
        wc.hIcon = LoadIcon(ghInst, MAKEINTRESOURCE(IDICON_IMAGEDIT));
        wc.hCursor =  LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
        wc.lpszMenuName = "imagedit";
        wc.lpszClassName = szMainClass;
        if (!RegisterClass(&wc))
            return FALSE;
    
        wc.style = CS_DBLCLKS;
        wc.lpfnWndProc = ColorBoxWndProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = ghInst;
        wc.hIcon = NULL;
        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = GetStockObject(LTGRAY_BRUSH);
        wc.lpszMenuName = (LPSTR)NULL;
        wc.lpszClassName = szColorBoxClass;
        if (!RegisterClass(&wc))
            return FALSE;
    
        wc.style = 0;
        wc.lpfnWndProc = ColorLRWndProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = ghInst;
        wc.hIcon = NULL;
        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = GetStockObject(LTGRAY_BRUSH);
        wc.lpszMenuName = (LPSTR)NULL;
        wc.lpszClassName = szColorLRClass;
        if (!RegisterClass(&wc))
            return FALSE;
    
        wc.style = CS_DBLCLKS;
        wc.lpfnWndProc = WorkWndProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = ghInst;
        wc.hIcon = NULL;
        wc.hCursor = (HCURSOR)NULL;
        wc.hbrBackground = (HBRUSH)NULL;
        wc.lpszMenuName  = (LPSTR)NULL;
        wc.lpszClassName = szWorkClass;
        if (!RegisterClass(&wc))
            return FALSE;
    
        wc.style = 0;
        wc.lpfnWndProc = ToolboxWndProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = ghInst;
        wc.hIcon = NULL;
        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = GetStockObject(LTGRAY_BRUSH);
        wc.lpszMenuName = NULL;
        wc.lpszClassName = szToolboxClass;
        if (!RegisterClass(&wc))
            return FALSE;
    
        wc.style = 0;
        wc.lpfnWndProc = ToolBtnWndProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = ghInst;
        wc.hIcon = NULL;
        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
        wc.lpszMenuName = NULL;
        wc.lpszClassName = szToolBtnClass;
        if (!RegisterClass(&wc))
            return FALSE;
    
        wc.style = 0;
        wc.lpfnWndProc = ViewWndProc;
        wc.cbClsExtra = 0;
        wc.cbWndExtra = 0;
        wc.hInstance = ghInst;
        wc.hIcon = NULL;
        wc.hCursor = LoadCursor(NULL, IDC_ARROW);
        wc.hbrBackground = GetStockObject(LTGRAY_BRUSH);
        wc.lpszMenuName = NULL;
        wc.lpszClassName = szViewClass;
        if (!RegisterClass(&wc))
            return FALSE;
    
        return TRUE;
    }
    
    
    
    /****************************************************************************
     *                                                                          *
     *  FUNCTION   : InitInstance(lpCmdLine, cmdShow)                           *
     *                                                                          *
     *  PURPOSE    : Load strings from resource file, make procedure instances  *
     *               of all dialog functions, create ImagEdit's windows, color  *
     *               "palettes", tool cursors and do a variety of other initial-*
     *               izations. Also prepare ImagEdit if started up from cmd line*
     *               with an argument. Some of these may be redundant, since a  *
     *               lot of pBrush stuff has been retained here.                *
     *                                                                          *
     *  SIDE EFFECTS: numerous                                                  *
     *                                                                          *
     ****************************************************************************/
    
    STATICFN BOOL NEAR InitInstance(
        LPSTR lpCmdLine,
        INT cmdShow)
    {
        INT i;
        INT iScrollBarWidth;        /* width of vertical scrollbar */
        INT iScrollBarHeight;       /* height of horizontal scrollbar */
        INT iScreenWid;
        INT iScreenHgt;             /* full screen width and height */
        INT x;
        INT y;
        INT cx;
        INT cy;
        BOOL fMaximized;
        RECT rcColor;
        RECT rcClient;
        RECT rc;
        POINT pt;
    
        /*
         * Load the "Out of memory." string now, since we may not be able to
         * load it if/when it needs to be displayed.
         */
        ids(IDS_OUTOFMEMORY);
    
        /*
         * Register for Pen Windows, if it is present.
         */
        PenWinRegister();
    
        /* register private ImagEdit clipboard format for icons and cursors */
        if (!(ClipboardFormat = RegisterClipboardFormat("ImagEdit")))
            return FALSE;
    
        if (!(haccelTbl = LoadAccelerators(ghInst, "imagedit")))
            return FALSE;
    
        hcurWait = LoadCursor(NULL, IDC_WAIT);
        gaTools[TOOL_PENCIL].hcur =
                LoadCursor(ghInst, MAKEINTRESOURCE(IDCUR_PENCIL));
        gaTools[TOOL_BRUSH].hcur =
                LoadCursor(ghInst, MAKEINTRESOURCE(IDCUR_BRUSH));
        gaTools[TOOL_SELECT].hcur =
        gaTools[TOOL_LINE].hcur =
        gaTools[TOOL_RECT].hcur =
        gaTools[TOOL_SOLIDRECT].hcur =
        gaTools[TOOL_CIRCLE].hcur =
        gaTools[TOOL_SOLIDCIRCLE].hcur =
                LoadCursor(ghInst, MAKEINTRESOURCE(IDCUR_CROSS));
        gaTools[TOOL_FLOODFILL].hcur =
                LoadCursor(ghInst, MAKEINTRESOURCE(IDCUR_FLOOD));
        gaTools[TOOL_HOTSPOT].hcur =
                LoadCursor(ghInst, MAKEINTRESOURCE(IDCUR_HOTSPOT));
    
        /*
         * Select the default tool.  Since the toolbox is not created yet,
         * this just sets up some globals.
         */
        ToolboxSelectTool(TOOL_FIRST);
    
        /*
         * Create a dark gray pen for use in borders later.
         */
        if (!(hpenDarkGray = CreatePen(PS_SOLID, 1, RGB_DARKGRAY)))
            return FALSE;
    
        /*
         * Initialize the two color palettes to the default colors.
         */
        for (i = 0; i < COLORSMAX; i++) {
            gargbColor[i] = gargbDefaultColor[i];
            gargbMono[i] = gargbDefaultMono[i];
        }
    
        /* get some system parameters */
        iScrollBarWidth  = GetSystemMetrics(SM_CXVSCROLL);
        iScrollBarHeight = GetSystemMetrics(SM_CYHSCROLL);
        iScreenWid       = GetSystemMetrics(SM_CXFULLSCREEN);
        iScreenHgt       = GetSystemMetrics(SM_CYFULLSCREEN);
        gcyBorder = GetSystemMetrics(SM_CYBORDER);
    
        /*
         * Build the help file name path.  Assume the help file is in the
         * same directory as the executable.
         */
        GetModuleFileName(ghInst, gszHelpFile, CCHMAXPATH);
        *FileInPath(gszHelpFile) = '';
        lstrcat(gszHelpFile, ids(IDS_HELPFILE));
    
        /*
         * Register the message for help from the common dialogs.
         */
        gmsgHelp = RegisterWindowMessage(HELPMSGSTRING);
    
        /*
         * Hook the message filter stream so that we can detect F1 keystrokes.
         */
        lpfnMsgFilterHookFunc =
                MakeProcInstance((FARPROC)MsgFilterHookFunc, ghInst);
        ghhkMsgFilter =
                SetWindowsHook(WH_MSGFILTER, lpfnMsgFilterHookFunc);
    
        if (!ReadWindowPos(szAppPos, &x, &y, &cx, &cy, &fMaximized)) {
            x = 2 * iScrollBarWidth;
            y = iScrollBarHeight;
            cx = min(iScreenWid - (4 * iScrollBarWidth), MAXDEFAULTAPPCX);
            cy = min(iScreenHgt - (6 * iScrollBarHeight), MAXDEFAULTAPPCY);
            fMaximized = FALSE;
        }
    
        /* create parent window */
        ghwndMain = CreateWindow(szMainClass, ids(IDS_PGMTITLE),
                WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS,
                x, y, cx, cy, NULL, NULL, ghInst, NULL);
    
        if (ghwndMain == NULL) {
            Message(MSG_OUTOFMEMORY);
            return FALSE;
        }
    
        /*
         * Read the preferences data saved in the ini file.
         */
        ReadEnv();
    
        /*
         * Create the Toolbox and the View window (invisible).
         */
        ToolboxCreate();
        ViewCreate();
    
        lpfnColorDlgProc = (WNDPROC)MakeProcInstance(
                (FARPROC)ColorDlgProc, ghInst);
        ghwndColor = CreateDialog(ghInst, MAKEINTRESOURCE(DID_COLOR),
                ghwndMain, lpfnColorDlgProc);
    
        ghwndWork = CreateWindow(szWorkClass, NULL,
                WS_CHILD | WS_BORDER,
                0, 0, 0, 0,
                ghwndMain,
                NULL, ghInst, NULL);
    
        /*
         * Build the device table.
         */
        InitDeviceList();
    
        SetColorPalette(gnColors, giType, TRUE);
        SetScreenColor(grgbScreenDefault);
    
        if (!ReadWindowPos(szColorPos, &x, &y, &cx, &cy, &fMaximized)) {
            /*
             * The previous position of the Color palette couldn't be found.
             * Position the palette just below the bottom left corner of the
             * client area of the editor, but make sure it is completely
             * visible.
             */
            GetWindowRect(ghwndColor, &rcColor);
            GetClientRect(ghwndMain, &rcClient);
            cx = rcColor.right - rcColor.left;
            cy = rcColor.bottom - rcColor.top;
            pt.x = rcClient.left + (2 * PALETTEMARGIN);
            pt.y = rcClient.bottom + (2 * PALETTEMARGIN);
            ClientToScreen(ghwndMain, &pt);
            SetRect(&rc, pt.x, pt.y, pt.x + cx, pt.y + cy);
            FitRectToScreen(&rc);
            x = rc.left;
            y = rc.top;
        }
    
        SetWindowPos(ghwndColor, NULL, x, y, 0, 0,
                SWP_NOACTIVATE | SWP_NOSIZE | SWP_NOZORDER);
    
        SetFileName(NULL);
    
        /*
         * If the app was saved when maximized (and they didn't start it up
         * with some kind of an option to have it minimized or in some
         * other funny initial state from the shell), then cause it to
         * be maximized when shown.
         */
        if (fMaximized && (cmdShow == SW_SHOWNORMAL || cmdShow == SW_SHOW))
            cmdShow = SW_SHOWMAXIMIZED;
    
        ShowWindow(ghwndMain, cmdShow);
        UpdateWindow(ghwndMain);
    
        /*
         * Did the user start this app minimized from the program manager?
         */
        if (IsIconic(ghwndMain)) {
            /*
             * Set a flag.  The showing of the palettes will be deferred
             * until the app is restored.
             */
            fStartAsIcon = TRUE;
        }
        else {
            /*
             * If they had the Toolbox/Color Palette before, show them now.
             */
            ToolboxShow(gfShowToolbox);
            ColorShow(gfShowColor);
        }
    
        /*
         * If there was a command line argument specified, try and open
         * it as the initial file.
         */
        if (__argc > 1)
            OpenCmdLineFile(__argv[1]);
    
        return TRUE;
    }
    
    
    
    /************************************************************************
    * PenWinRegister
    *
    * This function will register for Pen Windows, if it is present.
    *
    ************************************************************************/
    
    STATICFN VOID NEAR PenWinRegister(VOID)
    {
        HANDLE hmod;
    
        if (!(hmod = (HANDLE)GetSystemMetrics(SM_PENWINDOWS)))
            return;
    
        if (lpfnRegisterPenApp =
                (LPFNPENWIN)GetProcAddress(hmod, "RegisterPenApp"))
            (*lpfnRegisterPenApp)(1, TRUE);     // Be Pen-Enhanced!
    }
    
    
    
    /************************************************************************
    * MainWndProc
    *
    * Main window procedure for ImagEdit.
    *
    * History:
    *
    ************************************************************************/
    
    WINDOWPROC MainWndProc(
        HWND hwnd,
        UINT msg,
        WPARAM wParam,
        LPARAM lParam)
    {
        switch (msg) {
            case WM_CREATE:
                {
                    RECT rc;
    
                    /*
                     * Create the PropBar window.
                     */
                    lpfnPropBarDlgProc = (WNDPROC)MakeProcInstance(
                            (FARPROC)PropBarDlgProc, ghInst);
                    CreateDialog(ghInst, MAKEINTRESOURCE(DID_PROPBAR), hwnd,
                            lpfnPropBarDlgProc);
    
                    /*
                     * Save away its height for sizing later (like when
                     * the app is minimized then restored).
                     */
                    GetWindowRect(ghwndPropBar, &rc);
                    gcyPropBar = rc.bottom - rc.top;
                }
    
                break;
    
            case WM_NCCALCSIZE:
                /*
                 * Save away what is going to be the new window position.
                 */
                if (!IsIconic(hwnd) && !IsZoomed(hwnd))
                    grcAppPos = *((LPRECT)lParam);
    
                /*
                 * Now let the DefWindowProc calculate the client area normally.
                 */
                goto DoDefault;
    
            case WM_ACTIVATE:
                /*
                 * If the main window is getting activated, there is no
                 * currently active dialog.
                 */
                if (GET_WM_ACTIVATE_STATE(wParam, lParam))
                    gidCurrentDlg = 0;
    
                goto DoDefault;
    
            case WM_INITMENU:
                if (GetMenu(ghwndMain) == (HMENU)wParam)
                    InitMenu((HMENU)wParam);
    
                break;
    
            case WM_COMMAND:
                MenuCmd(GET_WM_COMMAND_ID(wParam, lParam));
                break;
    
            case WM_SIZE:
                SizeRibbons(hwnd);
    
                if (wParam != SIZEICONIC)
                    WorkReset();
    
                /*
                 * Did the app start minimized and is it being restored
                 * for the first time?  If so, show the palettes as
                 * the user has requested.
                 */
                if (fStartAsIcon && !IsIconic(hwnd)) {
                    ToolboxShow(gfShowToolbox);
                    ColorShow(gfShowColor);
                    fStartAsIcon = FALSE;
                }
    
                break;
    
            case WM_MENUSELECT:
                if (GET_WM_MENUSELECT_FLAGS(wParam, lParam) &
                        (MF_POPUP | MF_SYSMENU))
                    gMenuSelected = 0;
                else
                    gMenuSelected = GET_WM_MENUSELECT_CMD(wParam, lParam);
    
                break;
    
            case WM_CLOSE:
                if (VerifySaveFile()) {
                    DestroyWindow(hwnd);
                    CleanUp();
                }
    
                break;
    
            case WM_DESTROY:
                /*
                 * Save the position of the app's window.
                 */
                WriteWindowPos(&grcAppPos, IsZoomed(hwnd), szAppPos);
    
                WinHelp(ghwndMain, gszHelpFile, HELP_QUIT, 0L);
    
                PostQuitMessage(0);
    
                break;
    
            case WM_QUERYENDSESSION:
                return VerifySaveFile();
    
            default:
                /*
                 * Is this the registered help message from one of the common
                 * dialogs?  If so, show the help for it.
                 *
                 * The check to be sure gmsgHelp is non-zero is just in
                 * case the call to register the help message failed
                 * (it will return zero) and there happens to be a zero
                 * message that gets sent to this window somehow.
                 */
                if (msg == gmsgHelp && gmsgHelp) {
                    ShowHelp(FALSE);
                    return 0;
                }
    
            DoDefault:
                return DefWindowProc(hwnd, msg, wParam, lParam);
        }
    
        return 0;
    }
    
    
    
    /************************************************************************
    * ReadWindowPos
    *
    * This function retrieves the saved window position for a window and
    * returns it in the specified variables.  It is used between sessions
    * to restore the application windows to the position they had when
    * the editor was last exited.
    *
    * Returns TRUE if the position could be read, or FALSE otherwise.
    * If FALSE is returned, the values in the specified variables are
    * not valid!  The caller must be able to handle a FALSE return and
    * supply a default position for the window.
    *
    * Arguments:
    *   PSTR pstrKeyName  - KeyName the position was saved under.
    *   PINT px           - Saved x position.
    *   PINT py           - Saved y position.
    *   PINT pcx          - Saved width.
    *   PINT pcy          - Saved height.
    *   BOOL *pfMaximized - Set to TRUE if window was maximized when saved.
    *
    * History:
    *
    ************************************************************************/
    
    BOOL ReadWindowPos(
        PSTR pstrKeyName,
        PINT px,
        PINT py,
        PINT pcx,
        PINT pcy,
        BOOL *pfMaximized)
    {
        static CHAR szSep[] = " ,";
        CHAR szBuf[CCHTEXTMAX];
        PSTR pstr;
    
        if (!GetPrivateProfileString(ids(IDS_APPNAME),
                pstrKeyName, "", szBuf, CCHTEXTMAX, ids(IDS_IMAGEDITINI)))
            return FALSE;
    
        if (!(pstr = strtok(szBuf, szSep)))
            return FALSE;
    
        *px = atoi(pstr);
    
        if (!(pstr = strtok(NULL, szSep)))
            return FALSE;
    
        *py = atoi(pstr);
    
        if (!(pstr = strtok(NULL, szSep)))
            return FALSE;
    
        *pcx = atoi(pstr);
    
        if (!(pstr = strtok(NULL, szSep)))
            return FALSE;
    
        *pcy = atoi(pstr);
    
        /*
         * If there is a "1" following the coordinates, the window was
         * maximized when it was saved.
         */
        *pfMaximized = FALSE;
        if ((pstr = strtok(NULL, szSep)) && atoi(pstr) == 1)
            *pfMaximized = TRUE;
    
        /*
         * Don't allow a zero sized window.
         */
        if (*pcx == 0 || *pcy == 0)
            return FALSE;
    
        /*
         * Return success.
         */
        return TRUE;
    }
    
    
    
    /************************************************************************
    * WriteWindowPos
    *
    * This function writes the position of a window to the
    * editor's profile file under the specified keyname.
    * The ReadWindowPos function is the counterpart of this
    * function.
    *
    * Arguments:
    *   PRECT prc        - Rectangle for the "restored" window size.
    *   BOOL fMaximized  - TRUE if the window is maximized.
    *   PSTR pstrKeyName - KeyName to save the position under.
    *
    * History:
    *
    ************************************************************************/
    
    VOID WriteWindowPos(
        PRECT prc,
        BOOL fMaximized,
        PSTR pstrKeyName)
    {
        CHAR szBuf[CCHTEXTMAX];
    
        wsprintf(szBuf, "%d %d %d %d", prc->left, prc->top,
                prc->right - prc->left, prc->bottom - prc->top);
    
        if (fMaximized)
            strcat(szBuf, " 1");
    
        WritePrivateProfileString(ids(IDS_APPNAME),
                pstrKeyName, szBuf, ids(IDS_IMAGEDITINI));
    }
    
    
    
    /*************************************************************************
    * ReadEnv
    *
    * This function initializes variables from their counterparts
    * in the private profile file for ImagEdit.  The application
    * merely needs to construct an array of INIENTRY structures
    * to describe the variables that must be initialized.
    *
    * Note that the original value read from the profile is saved when
    * it is read.  This allows us to optimize what needs to be written
    * out with WriteEnv.
    *
    * History:
    *
    *************************************************************************/
    
    STATICFN VOID NEAR ReadEnv(VOID)
    {
        register INT i;
        HDC hdc;
        CHAR szBuf[CCHTEXTMAX];
        DWORD rgb;
    
        for (i = 0; gaie[i].pstrKeyName; i++) {
            *gaie[i].pnVar = gaie[i].nSave =
                    GetPrivateProfileInt(ids(IDS_APPNAME),
                    gaie[i].pstrKeyName, gaie[i].nDefault,
                    ids(IDS_IMAGEDITINI));
        }
    
        /*
         * Look for the saved screen color.
         */
        if (GetPrivateProfileString(ids(IDS_APPNAME), szrgbScreen, "",
                szBuf, CCHTEXTMAX, ids(IDS_IMAGEDITINI))) {
            rgb = (DWORD)atol(szBuf);
        }
        else {
            /*
             * The last screen color was not found.  The default will be
             * the current system screen background color.
             */
            rgb = GetSysColor(COLOR_BACKGROUND);
        }
    
        /*
         * Make the ImagEdit default screen color a solid color.
         */
        hdc = GetDC(ghwndMain);
        grgbScreenDefault = GetNearestColor(hdc, rgb);
        ReleaseDC(ghwndMain, hdc);
    }
    
    
    
    /*************************************************************************
    * WriteEnv
    *
    * This function is the counterpart to ReadEnv.  It saves values
    * in the profile file.
    *
    * History:
    *
    *************************************************************************/
    
    STATICFN VOID NEAR WriteEnv(VOID)
    {
        register INT i;
        CHAR szBuf[CCHTEXTMAX];
    
        for (i = 0; gaie[i].pstrKeyName; i++) {
            /*
             * Has the user changed the value since it was read?
             */
            if (gaie[i].nSave != *gaie[i].pnVar) {
                /*
                 * If the new value is the same as the default value,
                 * erase the entry from the ini file.  Otherwise,
                 * write the user-specified value out.
                 */
                if (*gaie[i].pnVar == gaie[i].nDefault) {
                    WritePrivateProfileString(ids(IDS_APPNAME),
                            gaie[i].pstrKeyName, NULL, ids(IDS_IMAGEDITINI));
                }
                else {
                    itoa(*gaie[i].pnVar, szBuf, 10);
                    WritePrivateProfileString(ids(IDS_APPNAME),
                            gaie[i].pstrKeyName, szBuf, ids(IDS_IMAGEDITINI));
                }
            }
        }
    
        /*
         * Save the current screen color.
         */
        ltoa((LONG)grgbScreen, szBuf, 10);
        WritePrivateProfileString(ids(IDS_APPNAME),
                szrgbScreen, szBuf, ids(IDS_IMAGEDITINI));
    }
    
    
    
    /************************************************************************
    * SizeRibbons
    *
    * This function positions and sizes the child ribbons in the editor.
    * It needs to be called any time the size of the main windows changes.
    *
    * Arguments:
    *   HWND hwnd - Parent window handle.
    *
    * History:
    *
    ************************************************************************/
    
    STATICFN VOID NEAR SizeRibbons(
        HWND hwnd)
    {
        RECT rcClient;
    
        if (ghwndPropBar && !IsIconic(hwnd)) {
            /*
             * Get the client area.
             */
            GetClientRect(hwnd, &rcClient);
    
            /*
             * Size/move the PropBar window to fit
             * the new client area.
             */
            SetWindowPos(ghwndPropBar, NULL,
                    0, 0,
                    rcClient.right - rcClient.left,
                    min(rcClient.bottom - rcClient.top, gcyPropBar),
                    SWP_NOACTIVATE | SWP_NOZORDER);
        }
    }
    
    
    
    /************************************************************************
    * CleanUp
    *
    * Cleans up all the resources allocated by the editor.
    *
    * History:
    *
    ************************************************************************/
    
    STATICFN VOID NEAR CleanUp(VOID)
    {
        WriteEnv();
    
        if (ghdcANDMask) {
            DeleteDC(ghdcANDMask);
            DeleteObject(ghbmANDMask);
        }
        if (ghdcImage) {
            DeleteDC(ghdcImage);
            DeleteObject(ghbmImage);
        }
    
        ImageFreeUndo();
    
        if (hpenDarkGray)
            DeleteObject(hpenDarkGray);
    
        if (ghbrLeft)
            DeleteObject(ghbrLeft);
    
        if (ghbrLeftSolid)
            DeleteObject(ghbrLeftSolid);
    
        if (ghbrRight)
            DeleteObject(ghbrRight);
    
        if (ghbrRightSolid)
            DeleteObject(ghbrRightSolid);
    
        if (ghbrScreen)
            DeleteObject(ghbrScreen);
    
        if (ghbrInverse)
            DeleteObject(ghbrInverse);
    
        if (ghpenLeft)
            DeleteObject(ghpenLeft);
    
        if (ghpenRight)
            DeleteObject(ghpenRight);
    
        ImageLinkFreeList();
    
        if (lpfnMsgFilterHookFunc) {
            UnhookWindowsHook(WH_MSGFILTER, lpfnMsgFilterHookFunc);
            FreeProcInstance(lpfnMsgFilterHookFunc);
        }
    
        if (lpfnPropBarDlgProc)
            FreeProcInstance((FARPROC)lpfnPropBarDlgProc);
    
        if (lpfnColorDlgProc)
            FreeProcInstance((FARPROC)lpfnColorDlgProc);
    }
/****************************************************************************
    My_mbschr:  strchr() DBCS version
****************************************************************************/
unsigned char * _CRTAPI1 My_mbschr(
    unsigned char *psz, unsigned short uiSep)
{
    while (*psz != '' && *psz != uiSep) {
        psz = CharNext(psz);
    }
    if (*psz == '' && uiSep != '') {
        return NULL;
    } else {
        return psz;
    }
}
/****************************************************************************
    My_mbstok:  strtok() DBCS version
****************************************************************************/
unsigned char * _CRTAPI1 My_mbstok(
    unsigned char *pszSrc, unsigned char *pszSep)
{
    static char *pszSave = NULL;
    char *pszHead;
    char *psz;
    if (pszSrc == NULL) {
        if (pszSave == NULL) {
            return NULL;
        } else {
            psz = pszSave;
        }
    } else {
        psz = pszSrc;
    }
    /*********************************************/
    /* Skip delimiters to find a head of a token */
    /*********************************************/
    while (*psz) {
        if (IsDBCSLeadByte(*psz)) {
            break;
        } else if (NULL == My_mbschr(pszSep, *psz)) {
            break;
        }
        psz++;
    }
    if (*psz == '') {
        //No more token
        return (pszSave = NULL);
    }
    pszHead = psz;
    /******************************/
    /* Search a Tail of the token */
    /******************************/
    while (*psz) {
        if (IsDBCSLeadByte(*psz)) {
            psz += 2;
            continue;
        } else if (NULL != My_mbschr(pszSep, *psz)) {
            break;
        }
        psz++;
    }
    if (*psz == '') {
        pszSave = NULL;
    } else {
        //Found next delimiter
        pszSave = psz + 1;
        *psz = '';
    }
    return pszHead;
}
/****************************************************************************
    My_mbsncat:
****************************************************************************/
unsigned char * _CRTAPI1 My_mbsncat(
    unsigned char *psz1, const unsigned char *psz2, size_t Length)
{
    int nLen = (int)Length;
    unsigned char *pszSv = psz1;
    while ('' != *psz1) {
        psz1++;
    }
    while (0 < nLen) {
        if (*psz2 == '') {
            *psz1++ = '';
            nLen--;
        } else if (IsDBCSLeadByte(*psz2)) {
            if (nLen == 1) {
                *psz1 = '';
            } else {
                *psz1++ = *psz2++;
                *psz1++ = *psz2++;
            }
            nLen -= 2;
        } else {
            *psz1++ = *psz2++;
            nLen--;
        }
    }
    return pszSv;
}

						