win32sdk学习 richedit实现的一个简单记事本

记录的源文件，篇幅有点长

工具栏资源图片

bmp格式

notepad.h文件

// NOTEPAD_H_INCLUDED
/*
** Copyright (C)
    name：notepad
    author：suju
    日期：2012-10-04
*/
#ifndef NOTEPAD_H_INCLUDED
#define NOTEPAD_H_INCLUDED
/*定义工具栏图标坐标数据*/
#define BNEW                            2
#define BOPEN                           4
#define BSAVE                           0
#define BREVO                           1
#define BRECOVERY                       3
#define BSHEAR                          7
#define BCOPY                           8
#define BPASTE                          9
#define BFIND                           5
#define BREPLACE                        10
#define BCENTER                         11
#define BLEFT                           12
#define BRIGHT                          13
#define BBOLD                           14
#define BITALIC                         15
#define BUNDERLINE                      16
#define BFONTSTYLE                      6
//工具栏样式图标
#define BOLD    0
#define ITALIC  1
#define UNDERLINE   2
//文本编码
#define TXT_UNICODE   1
#define TXT_ASCII     0
//
#define IF_FALSE(bool,sta1,sta2) bool!=0?sta1:sta2
#endif
/*include*/
#include <windows.h>
#include <stdio.h>
#include <richedit.h>
#include <commctrl.h>
#include "resource.h"
/*声明函数*/
/******start function********/
void setStatus();                   /*设置状态栏*/
long getLength();                   /*获取文本长度*/
void textChange();                  /*文本改变处理函数*/
void findText();                    /*查找*/
void savetofile();                  /*保存文件*/
void checkFormat();                 //工具栏图标匹配选中文本格式
void close(HWND hwnd);              /*关闭退出程序*/
void newfile(HWND hwnd);            /*新建文件*/
void readfile(HWND hwnd);           /*读取文件*/
void openfile(HWND hwnd);           /*打开文件*/
void menuChange(HWND hwnd);         /*菜单和工具栏按钮初始化*/
void moveStatus(HWND hwnd);         /*移动状态栏*/
void setFont(HWND hwndrich);        /*设置字体样式*/
void initToolbar(HWND hwnd);        /*初始化工具栏*/
void createStatus(HWND hwnd);       /*创建状态栏*/
void setAlignment(int style);       //设置样式（加粗，斜体，下划线）

void setWindowSize(HWND hwnd);                    /*设置窗体大小*/
void quickSetFormat(int STYLE);                   //工具栏设置样式
int savefiledialog(HWND hwndrich);                /*保存文件处理函数*/
void clickfile(HWND hwnd,LPSTR name);             //桌面拖放打开文件
void savefile(HWND hwnd,int savemodel);           /*保存文件*/
HWND getFindDialog(HWND hwnd,int model);          /*打开/替换对话框*/
void notifyChange(HWND hwnd,LPARAM lParam);       /*notify消息处理*/

TCHAR* substring(TCHAR* ch,int pos,int length);                       //字符串截取
void selText(TCHAR* lpchar,int index,TCHAR* defext);                  /*文件后缀判断函数*/

void getCHARFORMAT(HWND hwndrich,CHARFORMAT* cformat,CHOOSEFONT* cf);               /*获取格式化结构变量*/

void initOpn(OPENFILENAME* opn,TCHAR* filename,LPCSTR Title,DWORD filterIndex);      /*初始化opn结构*/
DWORD CALLBACK StreamCallback(DWORD dwCookie,LPBYTE pbBuff,LONG cb,LONG *pcb);      /*输入流回调函数*/
void initEidtStream(EDITSTREAM* stream,LPCSTR type,EDITSTREAMCALLBACK callback);     /*初始化读写流结构*/
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam);    /*主程序回调函数*/
DWORD CALLBACK SaveStreamCallback(DWORD dwCookie,LPBYTE pbBuff,LONG cb,LONG *pcb);  /*输出流回调函数*/
BOOL CALLBACK AboutDialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam);   /*对话框回调函数*/
/******end funciton********/
/*声明全局变量*/
/*******Statement Parameters*********/
HINSTANCE hInst;                            /*应用程序句柄*/
HWND hwndrich;                              /*richedit句柄*/
HWND hwndfind;                              /*查找对话框句柄*/
HWND hwndStatus;                            /*状态栏句柄*/
HWND hWndToolBar;                           /*工具栏句柄*/
UINT uFindReplaceMsg;  //FINDMSGSTRING消息  自定义查找消息
/*定义文件后缀*/
TCHAR filtername[MAX_PATH]=TEXT("rtf\0*.rtf\0txt\0*.txt\0all\0*.*\0");
TCHAR filename[MAX_PATH]="";                 /*初始文件名*/
TCHAR defext[MAX_PATH];                      /*初始文件后缀*/
TCHAR szFindWhat[80]="";                     /*初始查找文本*/
TCHAR szReplaceWhat[80]="";                  /*初始替换文本*/
FINDREPLACE fr;                             /*替换/查找对话框 结构变量*/
const int FIND=0;                           /*查找FIND常量*/
const int REPLACE=1;                        /*替换REPLACE常量*/
const int SAVE=0;                           /*保存SAVE常量*/
const int SAVEAS=1;                         /*另存为SAVES常量*/
const int F_OPEN=0;                         /*打开文件F_OPEN常量*/
const int F_CHANGE=1;                       /*改变文件内容F_CHANGE常量*/
TCHAR defaultname[]="未命名";                /*默认标题名*/
TCHAR SaveFileName[MAX_PATH]="";             /*默认保存文件名*/
TCHAR staformat[MAX_PATH]=TEXT("行%d 列%d");                   /*状态栏格式化文本*/
TCHAR sizeformat[MAX_PATH]=TEXT("字数 %ld");                   /*状态栏格式化文本*/
TCHAR status_line[MAX_PATH]="";                                /*状态栏行列数*/
TCHAR status_size[MAX_PATH]="";                                /*状态栏文本总长度*/
TCHAR szBuf[MAX_PATH];                                         /*提示消息字符缓冲*/
int isSave=TRUE;                                              /*修改状态*/
OPENFILENAME opfn;                                            /*OPENFILENAME打开文件结构*/
long size=0;                                                  /*文件大小*/
DWORD filterIndex=2;                                          //默认文件后缀索引
TCHAR szAppName[]=TEXT("DLG_MAIN");                            //窗口类名称
FILE* file=NULL;                                              //文件指针
CHARFORMAT cformat;                                           //格式化结构
PARAFORMAT paraformat;                                        //段落格式结构
int txtcode=TXT_ASCII;                                        //默认文件编码
int textmode;
/********Statement Parameters****************/

resource.h资源头文件

#ifndef IDC_STATIC
#define IDC_STATIC (-1)


#define DLG_MAIN                                101
#define IDR_MENU1                               102
#define IDD_DIALOG1                             103
#define ID_ACCE                                 106
#define IDI_ICON1                               107
#define IDB_BITMAP1                             108
#define IDC_RICHEDIT1                           1000
#define IDM_OPEN                                40000
#define IDM_EXIT                                40001
#define IDM_ABOUT                               40002
#define IDM_SAVE                                40003
#define IDM_STYLE                               40004
#define IDM_FIND                                40005
#define IDM_REPLACE                             40006
#define IDM_SAVEAS                              40007
#define IDM_NEW                                 40008
#define IDM_REVO                                40009
#define IDM_SHEAR                               40010
#define IDM_COPY                                40011
#define IDM_PASTE                               40012
#define IDM_RECOVERY                            40013
#define IDM_TAB                                 40014
#define IDR_TOOLBAR1                            40015
#define IDM_BOLD                                40016
#define IDM_ITALIC                              40017
#define IDM_UNDERLINE                           40018
#define IDM_CENTER                              40019
#define IDM_LEFT                                40020
#define IDM_RIGHT                               40021
#endif

resource.rc

//include 编译h文件
#include <windows.h>
#include <commctrl.h>
#include <richedit.h>
#include "resource.h"
//
// Bitmap resources图片
//
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDB_BITMAP1        BITMAP         ".\\notepad.bmp"


LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDR_TOOLBAR1       BITMAP         "bitmap.bmp"



//
// Menu resources菜单
//
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDR_MENU1 MENU
{
    POPUP "文件(&F)"
    {
        MENUITEM "新建(&N) Ctrl+N", IDM_NEW
        MENUITEM "打开(&O) Ctrl+O", IDM_OPEN
        MENUITEM "保存(&S) Ctrl+S", IDM_SAVE
        MENUITEM "另存为(&A)", IDM_SAVEAS
        MENUITEM SEPARATOR
        MENUITEM "退出(&E)", IDM_EXIT
    }
    POPUP "编辑(&E)"
    {
        MENUITEM "查找(&F) Ctrl+F", IDM_FIND
        MENUITEM "替换(&R) Ctrl+H", IDM_REPLACE
        MENUITEM SEPARATOR
        MENUITEM "撤销(&U) Ctrl+Z", IDM_REVO
        MENUITEM "恢复(&Y)Ctrl+Y", IDM_RECOVERY
        MENUITEM SEPARATOR
        MENUITEM "剪切(&T) Ctrl+x", IDM_SHEAR
        MENUITEM "复制(&C) Ctrl+C", IDM_COPY
        MENUITEM "粘贴(&P) Ctrl+V", IDM_PASTE
    }
    POPUP "选项(&O)"
    {
        MENUITEM "样式(&S)", IDM_STYLE
    }
    POPUP "帮助(&H)"
    {
        MENUITEM "关于(&A)", IDM_ABOUT
    }
}



//
// Dialog resources主对话框窗口
//
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
DLG_MAIN DIALOGEX 6, 5, 265, 285
STYLE DS_3DLOOK | DS_CENTER | DS_SHELLFONT | WS_VISIBLE | WS_BORDER | WS_CAPTION | WS_DLGFRAME | WS_GROUP | WS_MAXIMIZEBOX | WS_POPUP | WS_THICKFRAME | WS_SYSMENU | WS_TABSTOP
EXSTYLE WS_EX_WINDOWEDGE
CAPTION "Notepad"
MENU IDR_MENU1
CLASS "DLG_MAIN"
FONT 12, "Tahoma", 400, 0, 0
{
    //RICHEDIT_CLASS 2.0版本class name
    //L"RichEdit50W" CLASS 4.1版本class name
    CONTROL         "", IDC_RICHEDIT1,RICHEDIT_CLASS, WS_VSCROLL | NOT WS_BORDER | NOT WS_TABSTOP | ES_MULTILINE | ES_NOHIDESEL | ES_WANTRETURN, 0, 33, 265, 230, WS_EX_CLIENTEDGE
}


//关于对话框
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDD_DIALOG1 DIALOG 0, 0, 174, 105
STYLE DS_3DLOOK | DS_CENTER | DS_MODALFRAME | DS_SHELLFONT | WS_VISIBLE | WS_BORDER | WS_CAPTION | WS_DLGFRAME | WS_POPUP | WS_SYSMENU
CAPTION "关于"
FONT 8, "Ms Shell Dlg 2"
{
    DEFPUSHBUTTON   "确  定", IDOK, 136, 84, 25, 14
    LTEXT           "Notepad v1.0 demo\n\n制作:suju\n\nEmail:2567861663@qq.com", IDC_STATIC, 73, 26, 90, 40, SS_LEFT
    CONTROL         IDB_BITMAP1, IDC_STATIC, WC_STATIC, WS_GROUP | SS_BITMAP | SS_CENTERIMAGE | SS_NOTIFY | 0x00000840, 0, 19, 66, 56, WS_EX_TRANSPARENT
}



//
// String Table resources工具栏提示字符串资源
//
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
STRINGTABLE
{
    IDM_OPEN                      "打开"
    IDM_SAVE                      "保存"
    IDM_STYLE                     "样式"
    IDM_FIND                      "查找"
    IDM_REPLACE                   "替换"
    IDM_NEW                       "新建"
    IDM_REVO                      "撤销"
    IDM_SHEAR                     "剪切"
    IDM_COPY                      "复制"
    IDM_RECOVERY                  "恢复"
    IDM_PASTE                     "粘贴"
    IDM_BOLD                      "粗体"
    IDM_ITALIC                    "斜体"
    IDM_UNDERLINE                 "下划线"
    IDM_CENTER                    "居中显示"
    IDM_LEFT                      "靠左显示"
    IDM_RIGHT                     "靠右显示"
}



//
// Accelerator resources加速键
//
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
ID_ACCE ACCELERATORS
{
    "F",            IDM_FIND, VIRTKEY, CONTROL
    "O",            IDM_OPEN, VIRTKEY, CONTROL
    "H",            IDM_REPLACE, VIRTKEY, CONTROL
    "S",            IDM_SAVE, VIRTKEY, CONTROL
    VK_TAB,        IDM_TAB, VIRTKEY
}



//
// Icon resources图标资源
//
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
IDI_ICON1          ICON           ".\\notepad.ico"

notepad.c文件

//#define WIN32_LEAN_AND_MEAN

#include "notepad.h"
#define TBSTYLE_FLAT 2048       //工具栏样式

/*主启动函数*/

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
    hInst = hInstance;                  //保存实例句柄
    LoadLibrary("RichEd20.dll");       //载入richedit动态库，这个控件是以单独dll形式保存的2.0版本
    //LoadLibrary("msftedit.dll");       //载入richedit动态库，这个控件是4.1的
    MSG msg;                            //队列消息变量
    HWND hwnd;                          //窗口句柄
    HICON icon;                         //图标
    HACCEL haccel;                      //加速键
    //自定义查找对话框消息
    uFindReplaceMsg = RegisterWindowMessage(FINDMSGSTRING);
    //载入窗口图标
    icon=LoadIcon(hInstance,MAKEINTRESOURCE(IDI_ICON1));
    //--start声明，注册一个窗口类，类名和默认对话框模板类型一样。
    WNDCLASSEX wndclass ;                                       //窗口类结构
    ZeroMemory(&wndclass,sizeof(wndclass));                     //初始化结构
    wndclass.cbSize = sizeof (WNDCLASSEX);                      //cbSize大小，window检测窗口类型的参数。
    wndclass.style= CS_HREDRAW | CS_VREDRAW;                    //样式
    wndclass.lpfnWndProc= WndProc;                              //指定窗口消息处理函数
    wndclass.cbClsExtra= 0 ;                                    //窗口类预留字节空间，这里为0字节
    wndclass.cbWndExtra = DLGWINDOWEXTRA ;                      //窗口结构预留字节
    wndclass.hInstance= hInstance ;                             //窗口类模块句柄
    wndclass.hIcon =icon;                                       //定义图标
    wndclass.hCursor= LoadCursor (NULL, IDC_ARROW) ;            //鼠标光标
    wndclass.hbrBackground= (HBRUSH) (COLOR_BTNFACE + 1) ;      //设置背景色
    wndclass.lpszMenuName= NULL;                                //窗口应用程序菜单 NULL
    wndclass.lpszClassName= szAppName ;                         //窗口类别名称，对话框窗口和模板类名称相同
    //注册窗口
    if(!RegisterClassEx(&wndclass))
    {
        //注册失败处理
        MessageBox(NULL,TEXT("窗口注册失败!"),TEXT("Notepad"),MB_ICONERROR);
        return 0;
    }
    /*--end 注册窗口*/

    //基于对话框模板方式创建一个非模态对话框窗口
    //MAKEINTRESOURCE宏用于把数字资源ID转为字符串指针。
    hwnd=CreateDialog(hInstance,MAKEINTRESOURCE(DLG_MAIN),NULL,0);
    /*初始化窗口标题栏，并显示窗口*/
    SetWindowText(hwnd,strcat(defaultname,"-Notepad"));
    ShowWindow(hwnd,nShowCmd);
    UpdateWindow(hwnd);

    /*设置richedit控件响应消息*/
    hwndrich=GetDlgItem(hwnd,IDC_RICHEDIT1);
    SendMessage(hwndrich,EM_SETEVENTMASK,0,ENM_SELCHANGE|ENM_MOUSEEVENTS|ENM_CHANGE|ENM_KEYEVENTS|ENM_SCROLL|ENM_DROPFILES);
    SendMessage(hwndrich,EM_EXLIMITTEXT,0,-1);
    //载入加速键资源表，保存加速键表句柄
    haccel=LoadAccelerators(hInstance,MAKEINTRESOURCE(ID_ACCE));
    //创建状态栏，并重置窗口位置
    createStatus(hwnd);
    setWindowSize(hwnd);
    /*命令行和拖放文件打开判断*/
    if (strcmp(lpCmdLine,TEXT(""))!=0){
       clickfile(hwnd,lpCmdLine);
    }
    //*主消息循环*//
    while (GetMessage(&msg,NULL,0,0))
    {
        //加速键捕获处理
        if (!TranslateAccelerator(hwnd,haccel,&msg))
        {
            //非模态对话框消息处理
            if (hwnd==NULL || !IsDialogMessage (hwnd,&msg))
            {
                //主消息循环体
                TranslateMessage(&msg);
                DispatchMessage(&msg);
            }
        }
    }
    FreeLibrary(hInstance);     //释放模块句柄资源
    return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam)
{
    switch(message)
    {
        case WM_CREATE:
            initToolbar(hwnd);
            menuChange(hwnd);
            //初始化字符格式结构
            ZeroMemory(&cformat,sizeof(CHARFORMAT));
            cformat.cbSize=sizeof(CHARFORMAT);
            cformat.dwMask=CFM_SIZE|CFM_COLOR|CFM_FACE|CFM_ITALIC|CFM_BOLD|CFM_STRIKEOUT|CFM_UNDERLINE;
            //初始化段落格式结构
            ZeroMemory(¶format,sizeof(paraformat));
            paraformat.cbSize=sizeof(PARAFORMAT);
            return 0;
        case WM_SIZE:
            setWindowSize(hwnd);                //重置窗口
            return 0;
        case WM_CLOSE:
            close(hwnd);                        //响应close
            return 0;
        case WM_NOTIFY:
            notifyChange(hwnd,lParam);          //工具栏和richedit组件特定消息，键盘，鼠标控制
            return 0;
        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case IDM_TAB:
                    //tab加速键
                    SendMessage(hwndrich,EM_REPLACESEL,0,(LPARAM)TEXT("\t"));
                    textChange(F_CHANGE);
                    break;
                case IDM_NEW:
                    newfile(hwnd);
                    break;
                case IDM_OPEN:
                    openfile(hwnd);
                    break;
                case IDM_STYLE:
                    setFont(hwndrich);
                    break;
                case IDM_SAVEAS:
                    savefile(hwnd,SAVEAS);
                    break;
                case IDM_EXIT:
                    close(hwnd);
                    break;
                case IDM_SAVE:
                    savefile(hwnd,SAVE);
                    break;
                case IDM_REVO:
                    //撤销
                    SendMessage(hwndrich,EM_UNDO,0,0);
                    textChange(F_CHANGE);
                    break;
                case IDM_RECOVERY:
                    //恢复
                    SendMessage(hwndrich,EM_REDO,0,0);
                    textChange(F_CHANGE);
                    break;
                case IDM_COPY:
                    SendMessage(hwndrich,WM_COPY,0,0);
                    break;
                case IDM_SHEAR:
                    SendMessage(hwndrich,WM_CUT,0,0);
                    textChange(F_CHANGE);
                    break;
                case IDM_PASTE:
                    SendMessage(hwndrich,WM_PASTE,0,0);
                    textChange(F_CHANGE);
                    break;
                case IDM_REPLACE:
                    hwndfind=getFindDialog(hwnd,REPLACE);
                    break;
                case IDM_FIND:
                    hwndfind=getFindDialog(hwnd,FIND);
                    break;
                case IDM_BOLD:
                    quickSetFormat(BOLD);
                    break;
                case IDM_ITALIC:
                    quickSetFormat(ITALIC);
                    break;
                case IDM_UNDERLINE:
                    quickSetFormat(UNDERLINE);
                    break;
                case IDM_CENTER:
                    setAlignment(PFA_CENTER);
                    break;
                case IDM_LEFT:
                    setAlignment(PFA_LEFT);
                    break;
                case IDM_RIGHT:
                    setAlignment(PFA_RIGHT);
                    break;
                case IDM_ABOUT:
                    //about模态窗口
                    DialogBox(hInst, MAKEINTRESOURCE(IDD_DIALOG1), hwnd,(DLGPROC)AboutDialogProc);
            }
            return 0;
        default:
            //查找替换对话框消息
            if (message==uFindReplaceMsg){
                findText();
                return 0;
            }
    }
    return DefWindowProc(hwnd, message, wParam, lParam) ;
}
//about模态对话框 回调函数
BOOL CALLBACK AboutDialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    switch(uMsg)
    {
        case WM_CLOSE:
            EndDialog(hwndDlg, 0);
            return TRUE;
        case WM_COMMAND:
            switch(LOWORD(wParam))
            {
                case IDOK:
                    EndDialog(hwndDlg, 0);
                    break;
            }
            return TRUE;
    }
    return FALSE;
}
//组件响应事件处理
void notifyChange(HWND hwnd,LPARAM lParam)
{
    LPTOOLTIPTEXT lpToolTipText;            //TOOLTIPTEXT结构指针
    MSGFILTER* msgfilter;                   //MSGFILTER结构指针

    //MSGFILTER，TOOLTIPTEXT结构第一个字段都是NMHDR结构
    LPNMHDR nmhdr=(LPNMHDR)lParam;          //从nmhdr结构获取code消息代码
    switch(nmhdr->code)
    {
        //richedit键盘鼠标事件响应
        case EN_MSGFILTER:
            msgfilter=(MSGFILTER*)lParam;
            //MSGFILTER结构中msg消息字段
            switch(msgfilter->msg)
            {
                case WM_MOUSEACTIVATE:
                    //鼠标单击
                    setStatus();
                    break;
                case WM_KEYUP:
                    //按键按起状态
                    textChange(F_CHANGE);
            }
            break;
        //工具栏提示文本响应
        case TTN_NEEDTEXT:
            lpToolTipText = (LPTOOLTIPTEXT)lParam;
            // 如果系统需要文本，则从资源中进行装载字符串
            LoadString (hInst,
                lpToolTipText->hdr.idFrom,    // 字符串ID == 命令ID
                szBuf,
                sizeof(szBuf));
            // 将结构lpszText字段指向字符串
            lpToolTipText->lpszText = szBuf;
            break;
        //选择文本改变响应
        case EN_SELCHANGE:
            menuChange(hwnd);
    }
}
//初始化工具栏
void initToolbar(HWND hwnd)
{
    //按钮结构数组
    TBBUTTON tbButtons[]={
          {BNEW, IDM_NEW, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BOPEN, IDM_OPEN, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BSAVE, IDM_SAVE, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP},
           {BREVO, IDM_REVO, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BRECOVERY, IDM_RECOVERY, TBSTATE_ENABLED, TBSTYLE_BUTTON},
            {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP},
           {BSHEAR, IDM_SHEAR, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BCOPY, IDM_COPY, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BPASTE, IDM_PASTE, TBSTATE_ENABLED, TBSTYLE_BUTTON},
            {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP},
           {BFIND, IDM_FIND, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BREPLACE, IDM_REPLACE, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP},
           {BFONTSTYLE, IDM_STYLE, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {0, 0, TBSTATE_ENABLED, TBSTYLE_SEP},
           {BLEFT, IDM_LEFT, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BCENTER, IDM_CENTER, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BRIGHT, IDM_RIGHT, TBSTATE_ENABLED, TBSTYLE_BUTTON},
           {BBOLD, IDM_BOLD, TBSTATE_ENABLED, TBSTYLE_CHECK},
           {BITALIC, IDM_ITALIC, TBSTATE_ENABLED, TBSTYLE_CHECK},
           {BUNDERLINE, IDM_UNDERLINE, TBSTATE_ENABLED, TBSTYLE_CHECK},
           };
    //创建工具栏，返回工具栏句柄，IDR_TOOLBAR1工具栏图像id资源号
    hWndToolBar=CreateToolbarEx(hwnd,WS_VISIBLE|WS_CHILD|TBSTYLE_FLAT|TBSTYLE_TOOLTIPS,1,22,
                    hInst,IDR_TOOLBAR1,tbButtons,22,0,0,16,16,sizeof(TBBUTTON));

}
//
void createStatus(HWND hwnd)
{
    //创建一个状态栏
    hwndStatus=CreateWindow(STATUSCLASSNAME,"",SBS_SIZEGRIP|WS_CHILD | WS_VISIBLE,
                            0,0,0,0,hwnd,NULL,hInst,NULL);
    //移动初始化状态栏
    moveStatus(hwnd);
    //设置状态栏分栏文本，WPARAM指定栏目
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("就绪"));
    //使用格式化字符串来设置状态栏文本
    wsprintf(status_line,staformat,1,1);
    wsprintf(status_size,sizeformat,0);
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)1, (LPARAM)status_line);
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)2, (LPARAM)status_size);
}
void moveStatus(HWND hwnd)
{
    RECT rcClient;
    int width[3];                       //状态栏分割数组
    GetClientRect(hwnd, &rcClient);     //获取父窗口矩形
    int length=rcClient.right/3;        //根据父窗口宽度来分割指定大小
    width[0]=length;                    //状态栏第一栏宽度，为分割长度length
    width[1]=length*2;                  //状态栏往后栏目宽度，为length*栏目标号
    width[2]=length*3;

    //根据width数组来设置状态栏
    SendMessage(hwndStatus, SB_SETPARTS, 3, (LPARAM)(LPINT)width);
    MoveWindow(hwndStatus,0,0,0,0,TRUE);
}
//
void setStatus()
{
    int ln,col,lindex;
    //获取当前光标索引
    SendMessage(hwndrich,EM_GETSEL,(WPARAM)&lindex,0);
    //获取当前行
    ln=SendMessage(hwndrich,EM_LINEFROMCHAR,lindex,0);
    //返回当前行首字符所以
    col=SendMessage(hwndrich,EM_LINEINDEX,ln,0);
    //用lindex索引减col索引得到列号,更新消息
    wsprintf(status_line,staformat,ln+1,lindex-col+1);
    wsprintf(status_size,sizeformat,size);
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)1, (LPARAM)status_line);
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)2, (LPARAM)status_size);
}
///获取对话框
HWND getFindDialog(HWND hwnd,int model)
{
    //初始化FINDREPLACE结构
    ZeroMemory(&fr, sizeof(fr));
    fr.lStructSize = sizeof(FINDREPLACE);       //结构大小
    fr.hwndOwner = hwnd;                        //父窗口
    fr.lpstrFindWhat = szFindWhat;              //查找字符串
    fr.wFindWhatLen = sizeof(szFindWhat);       //查找字符串长度
    fr.Flags=FR_DOWN|FR_MATCHCASE|FR_HIDEWHOLEWORD;     //查找标记
    if (model){
        //替换对话框
        fr.lpstrReplaceWith=szReplaceWhat;              //替换字符串
        fr.wReplaceWithLen=sizeof(szReplaceWhat);       //字符串长度
        fr.Flags=FR_HIDEWHOLEWORD|FR_REPLACE|FR_REPLACEALL;     //替换标记
        return ReplaceText(&fr);
    }
    return FindText(&fr);
}
//查找，替换逻辑
void findText()
{
    //FR_DIALOGTERM消息就返回
    if (fr.Flags&FR_DIALOGTERM){return;}
    //定义查找结构，并获取当前光标位置
    FINDTEXTEX findtext;
    findtext.lpstrText=fr.lpstrFindWhat;
    SendMessage(hwndrich,EM_EXGETSEL,0,(LPARAM)&findtext.chrg);

    if (fr.Flags&FR_FINDNEXT||fr.Flags&FR_REPLACE||fr.Flags&FR_REPLACEALL)
    {
        //FR_REPLACE或FR_REPLACEALL消息时执行
        if (fr.Flags&FR_REPLACE||fr.Flags&FR_REPLACEALL){
            CHAR buffer[MAX_PATH];      //声明临时数组存储当前选中文本内容
            SendMessage(hwndrich,EM_GETSELTEXT,0,(LPARAM)buffer);
            if (strcmp(buffer,fr.lpstrFindWhat)==0){
                //当前选中内容和替换文本一致，进行替换并更新状态栏
                SendMessage(hwndrich,EM_REPLACESEL,0,(LPARAM)fr.lpstrReplaceWith);
                textChange(F_CHANGE);
            }
        }
        //FR_DOWN标志判断
        if (fr.Flags&FR_DOWN){
            //非FR_FINDNEXT消息，进行findtext结构查找范围更改
            if (!(fr.Flags&FR_FINDNEXT)&&findtext.chrg.cpMin!=findtext.chrg.cpMax){
                findtext.chrg.cpMin=findtext.chrg.cpMax+strlen(fr.lpstrReplaceWith);
            }else{findtext.chrg.cpMin=findtext.chrg.cpMax;}
            //findtext查找范围cpMax默认为当前文本内容长度
            findtext.chrg.cpMax=GetWindowTextLength(hwndrich);
        }else{ findtext.chrg.cpMax=-1;}                  //非FR_DOWN标志，进行向上查找，改变查找范围
        LRESULT pos;                                     //声明pos变量记录当前查找结果索引
        pos=SendMessage(hwndrich,EM_FINDTEXTEX,fr.Flags,(LPARAM)&findtext);
        if (pos==-1){
            if (fr.Flags&FR_REPLACEALL){
                //FR_REPLACEALL消息时提示信息
                MessageBox(hwndfind,TEXT("全部替换完毕!"),"Notepad",MB_ICONINFORMATION);
            }else{ MessageBox(hwndfind,TEXT("没有找到匹配字符!"),"Notepad",MB_ICONINFORMATION);}
            return;                     //FR_REPLACEALL消息，递归替换，函数返回点
        }else{
            //选中当前查找文本，高亮显示
            SendMessage(hwndrich,EM_EXSETSEL,0,(LPARAM)&(findtext.chrgText));
        }
        //FR_REPLACEALL 递归查找
        if (fr.Flags&FR_REPLACEALL){findText();};
    }
}
//richedit流回调函数
DWORD CALLBACK StreamCallback(DWORD dwCookie,LPBYTE pbBuff,LONG cb,LONG *pcb)
{
    FILE* ofile=(FILE*)dwCookie;         //文件指针
    int get;
    LONG i=0;
    while ((get=fgetc(ofile))!=EOF && (i++)<cb){
        *(pbBuff++)=get;                //数据写入pbBuff缓冲区。cb写入最大值
    }
    *pcb=i;                             //实际写入大小
    return 0;
}

//流回调写入函数
DWORD CALLBACK SaveStreamCallback(DWORD dwCookie,LPBYTE pbBuff,LONG cb,LONG *pcb)
{
    FILE* sfile=(FILE*)dwCookie;        //文件指针
    LONG i=0;
    while ((i++)<cb){
        putc(*(pbBuff++),sfile);        //pbBuff缓存区写入文件
    }
    *pcb=i;
    return 0;
}
//初始化OPENFILENAME结构
void initOpn(OPENFILENAME* opfn,char* filename,LPCSTR Title,DWORD filterIndex)
{
    ZeroMemory(opfn,sizeof(OPENFILENAME));
    opfn->lStructSize=sizeof(OPENFILENAME);         //结构大小
    opfn->lpstrFile=filename;                       //文件名保存字符数组
    opfn->lpstrTitle=Title;                         //标题
    opfn->lpstrFilter=filtername;                   //文件过滤器
    opfn->nMaxFile=MAX_PATH;                        //lpstrFile数组大小
    opfn->lpstrDefExt="";                           //默认文件后缀
    //定义打开模式标记
    opfn->Flags=OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
    opfn->nFilterIndex=filterIndex;                 //文件过滤器索引
}
//初始化编辑流结构
void initEidtStream(EDITSTREAM* stream,LPCSTR type,EDITSTREAMCALLBACK callback)
{
    ZeroMemory(stream,sizeof(EDITSTREAM));
    file=fopen(filename,type);              //根据模式打开文件
    stream->dwCookie=(DWORD_PTR)file;       //定义编辑流结构字段
    stream->dwError=0;
    stream->pfnCallback=callback;           //回调函数
    if (strcmp(type,TEXT("rb"))==0){
        TCHAR buff[3];                          //字符缓存
        //16进制格式化输入字符缓冲区,FFFE为unicode文件头，这里逆序存入字符数组,为FEFF
        sprintf(buff,"%X%X",fgetc(file),fgetc(file));
        if (strcmp(buff,TEXT("FEFF"))==0){
            txtcode=TXT_UNICODE;
        }else{
            txtcode=TXT_ASCII;
            fseek(file,0,0);        //从定位文件到开头
        }
    }else{
        IF_FALSE(txtcode,fprintf(file,TEXT("%c%c"),255,254),0);//255->0xFF,254->0xFE
    }
}
//保存文件
void savefile(HWND hwnd,int savemodel)
{
    //判断保存模式
    if(savemodel || strcmp(SaveFileName,TEXT(""))==0)
    {
        if (savefiledialog(hwndrich)){
            //保存成功。更新标题名
            strcpy(SaveFileName,filename);
            SetWindowText(hwnd,strcat(SaveFileName,TEXT("-Notepad")));
        }
    }else{
        savetofile();
    }
}
//保存文件对话框
int savefiledialog(HWND hwndrich)
{
    //初始化OPENFILENAME结构-保存
    initOpn(&opfn,filename,"保存",filterIndex);
    if(GetSaveFileName(&opfn)){
        savetofile();
        return 1;
    }
    return 0;
}
//保存文件
void savetofile()
{
    EDITSTREAM stream;
    //写入模式初始化编辑流
    initEidtStream(&stream,"wb",SaveStreamCallback);
    //判断文件后缀，其实OPENFILENAME结构有保存选择后缀字段，使用字段会简化点
    selText(filtername,opfn.nFilterIndex,defext);
    TCHAR* charpos=strstr(defext,"rtf");
    if (charpos==NULL){
        //非rtf后缀，都使用text格式保存
        IF_FALSE(txtcode,SendMessage(hwndrich,EM_STREAMOUT,SF_TEXT|SF_UNICODE,(LPARAM)&stream),
            SendMessage(hwndrich,EM_STREAMOUT,SF_TEXT,(LPARAM)&stream));
    }else{ SendMessage(hwndrich,EM_STREAMOUT,SF_RTF,(LPARAM)&stream);}
    //更新状态栏，并修改编辑状态。
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("已保存"));
    isSave=TRUE;
    fclose(file);       //关闭文件句柄
}
//字符格式结构
void getCHARFORMAT(HWND hwndrich,CHARFORMAT* cformat,CHOOSEFONT* cf)
{
    LOGFONT* lf=cf->lpLogFont;
    //获取当前选择字符样式结构,CHARFORMAT
    SendMessage(hwndrich,EM_GETCHARFORMAT,SCF_SELECTION,(LPARAM)cformat);
    //与~CFE_AUTOCOLOR字段，总是使dwEffects的CFE_AUTOCOLOR位无效
    cformat->dwEffects&=~CFE_AUTOCOLOR;
    cf->rgbColors=cformat->crTextColor;
    strcpy(lf->lfFaceName,cformat->szFaceName);
    //根据CHARFORMAT结构字段初始化LOGFONT
    lf->lfStrikeOut=cformat->dwEffects&CFM_STRIKEOUT;       //删除线
    lf->lfUnderline=cformat->dwEffects&CFM_UNDERLINE;       //下划线
    lf->lfItalic=cformat->dwEffects&CFE_ITALIC;             //斜体
    cformat->dwEffects&CFE_BOLD?lf->lfWeight=FW_BOLD:0;     //粗体
    lf->lfHeight=-cformat->yHeight/15;                      //字体大小
}
//工具栏快速设置
void quickSetFormat(int STYLE)
{
    //获取选中文本字符格式结构
    SendMessage(hwndrich,EM_GETCHARFORMAT,SCF_SELECTION,(LPARAM)&cformat);
    switch(STYLE)
    {
        case BOLD:
            if (SendMessage(hWndToolBar,TB_ISBUTTONCHECKED,IDM_BOLD,0)){
                cformat.dwEffects|=CFM_BOLD;  //|=，添加CFM_BOLD属性。&=~CFM_BOLD清除属性
            }else{cformat.dwEffects&=~CFM_BOLD;}
            break;
        case ITALIC:
            if (SendMessage(hWndToolBar,TB_ISBUTTONCHECKED,IDM_ITALIC,0)){
                cformat.dwEffects|=CFM_ITALIC;  //斜体
            }else{cformat.dwEffects&=~CFM_ITALIC;}
            break;
        case UNDERLINE:
            if (SendMessage(hWndToolBar,TB_ISBUTTONCHECKED,IDM_UNDERLINE,0)){
                cformat.dwEffects|=CFM_UNDERLINE;   //下划线
            }else{cformat.dwEffects&=~CFM_UNDERLINE;}
    }
    //设置格式，状态栏
    SendMessage(hwndrich,EM_SETCHARFORMAT,SCF_SELECTION,(LPARAM)&cformat);
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("已修改"));
    isSave=FALSE;
}
//选取文本动态改变工具栏图标状态
void checkFormat()
{
    SendMessage(hwndrich,EM_GETCHARFORMAT,SCF_SELECTION,(LPARAM)&cformat);
    /*？三元运算符，根据选中文本格式，改变对应工具栏图标状态*/
    //下划线
    cformat.dwEffects&CFM_UNDERLINE?SendMessage(hWndToolBar,TB_CHECKBUTTON,IDM_UNDERLINE,TRUE):
                                     SendMessage(hWndToolBar,TB_CHECKBUTTON,IDM_UNDERLINE,FALSE);
    //斜体
    cformat.dwEffects&CFE_ITALIC?SendMessage(hWndToolBar,TB_CHECKBUTTON,IDM_ITALIC,TRUE):
                                    SendMessage(hWndToolBar,TB_CHECKBUTTON,IDM_ITALIC,FALSE);
    //粗体
    cformat.dwEffects&CFE_BOLD?SendMessage(hWndToolBar,TB_CHECKBUTTON,IDM_BOLD,TRUE):
                                    SendMessage(hWndToolBar,TB_CHECKBUTTON,IDM_BOLD,FALSE);
}
//设置样式
void setFont(HWND hwndrich)
{
    CHOOSEFONT cf;                      //字体设置对话框结构
    LOGFONT lf;                         //字体属性结构
    ZeroMemory(&cf,sizeof(CHOOSEFONT));
    cf.lStructSize=sizeof(CHOOSEFONT);
    cf.lpLogFont= &lf;
    cf.Flags= CF_SCREENFONTS|CF_EFFECTS|CF_INITTOLOGFONTSTRUCT;     //对话框默认显示样式标记
    getCHARFORMAT(hwndrich,&cformat,&cf);                      //获取当前样式来设置字体对话框

    if(ChooseFont(&cf)){
        //依据LOGFONT字段来设置CHARFORMAT结构字段量
        lf.lfItalic?(cformat.dwEffects|=CFE_ITALIC):(cformat.dwEffects&=~CFE_ITALIC);
        lf.lfStrikeOut?(cformat.dwEffects|=CFM_STRIKEOUT):(cformat.dwEffects&=~CFM_STRIKEOUT);
        lf.lfUnderline?(cformat.dwEffects|=CFM_UNDERLINE):(cformat.dwEffects&=~CFM_UNDERLINE);
        lf.lfWeight>=FW_BOLD?(cformat.dwEffects|=CFM_BOLD):(cformat.dwEffects&=~CFM_BOLD);

        cformat.crTextColor=cf.rgbColors;       //颜色
        cformat.yHeight=-lf.lfHeight*15;        //size大小
        strcpy(cformat.szFaceName,lf.lfFaceName);           //字体名称
        SendMessage(hwndrich,EM_SETCHARFORMAT,SCF_SELECTION,(LPARAM)&cformat);
        SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("已修改"));
        isSave=FALSE;
    }
}
//文件后缀判断，//可以直接使用OPENFILENAME结构字段保存选择的后缀
void selText(TCHAR* lpchar,int index,TCHAR* defext)
{
    int i;
    //根据选择索引值获取索引对应后缀字符串
    for(i=0;i<((index-1)*2+1);++i){
        while(*(lpchar++)!='\0'){
        }
    }
    strcpy(defext,lpchar);
}
//打开文件
void openfile(HWND hwnd)
{
    if (isSave){
        readfile(hwnd);
    }else{
        int result=MessageBox(hwnd,TEXT("文件已经改动！需要保存吗？"),TEXT("提示"),MB_YESNOCANCEL|MB_ICONINFORMATION);
        switch(result)
        {
            case IDYES:
                //另存为
                savefile(hwnd,SAVEAS);
                readfile(hwnd);
                break;
            case IDNO:
                readfile(hwnd);
                break;
            case IDCANCEL:
                break;
        }
    }
}
//拖放文件打开
void clickfile(HWND hwnd,LPSTR name)
{
    //获取命令行字符串，截取两端的“
    name=substring(name,1,strlen(name)-2);
    strcpy(filename,name);
    //初始化编辑流，并打开文件
    EDITSTREAM stream;
    initEidtStream(&stream,"rb",StreamCallback);
    //从文件检查后缀
    TCHAR* charpos=strstr(filename,".rtf");
    if (charpos==NULL){
        //非rtf文件打开模式
        filterIndex=2;      //改变后缀索引
        //根据文本编码打开文件
        if (txtcode){
            SendMessage(hwndrich,EM_STREAMIN,SF_TEXT|SF_UNICODE,(LPARAM)&stream);
            txtcode=TXT_UNICODE;
        }else{
            //ASCII码
            SendMessage(hwndrich,EM_STREAMIN,SF_TEXT,(LPARAM)&stream);
        }
    }else{
        filterIndex=1;
        SendMessage(hwndrich,EM_STREAMIN,SF_RTF,(LPARAM)&stream);
    }
    //初始化OPENFILENAME结构
    initOpn(&opfn,filename,"打开",filterIndex);
    strcpy(SaveFileName,filename);              //设置标题栏
    SetWindowText(hwnd,strcat(SaveFileName,TEXT("-Notepad")));
    //更改状态栏信息
    textChange(F_OPEN);
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("就绪"));
    isSave=TRUE;
    fclose(file);
}
//读取文件
void readfile(HWND hwnd)
{
    //打开模式初始化结构
    initOpn(&opfn,filename,TEXT("打开"),filterIndex);
    if(GetOpenFileName(&opfn)){
        EDITSTREAM stream;          //读取模式初始化编辑流
        initEidtStream(&stream,"rb",StreamCallback);
        filterIndex=opfn.nFilterIndex;
        selText(filtername,opfn.nFilterIndex,defext);
        TCHAR* charpos=strstr(defext,"rtf");        //检索文件后缀
        if (charpos==NULL){
            SetWindowText(hwndrich,TEXT(""));       //清空当前内容
            //根据文本编码打开文件
            IF_FALSE(txtcode,SendMessage(hwndrich,EM_STREAMIN,SF_TEXT|SF_UNICODE,(LPARAM)&stream),
                     SendMessage(hwndrich,EM_STREAMIN,SF_TEXT,(LPARAM)&stream));
        }else{ SendMessage(hwndrich,EM_STREAMIN,SF_RTF,(LPARAM)&stream);}
        //更改标题栏文件名
        strcpy(SaveFileName,filename);
        SetWindowText(hwnd,strcat(SaveFileName,TEXT("-Notepad")));

        textChange(F_OPEN);
        SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("就绪"));
        isSave=TRUE;
        fclose(file);
    }
}
//获取内容长度
long getLength()
{
    //GETTEXTLENGTHEX结构 用来保存当前内容长度字段
    GETTEXTLENGTHEX lengthstrust={GTL_NUMCHARS,1200};
    return SendMessage(hwndrich,EM_GETTEXTLENGTHEX,(WPARAM)&lengthstrust,(LPARAM)0);
}
//窗口布局改变
void setWindowSize(HWND hwnd)
{
    RECT mainrect,recttemp;
    //width，richedit宽度，height，richedit高度
    long width,height;
    //获取主窗口布局矩形
    GetClientRect(hwnd,&mainrect);
    //获取width
    width=mainrect.right-mainrect.left;
    //移动状态栏
    moveStatus(hwnd);
    //获取状态栏窗口矩形
    GetWindowRect(hwndStatus,&recttemp);
    height=recttemp.top;
    //获取工具栏窗口矩形
    GetWindowRect(hWndToolBar,&recttemp);
    //得到richedit窗口top
    long top=recttemp.bottom-recttemp.top;
    height-=recttemp.bottom;
    SendMessage(hWndToolBar,TB_AUTOSIZE,0,0);
    //改变richedit窗口位置大小
    MoveWindow(hwndrich,mainrect.left,top,
               width,height,TRUE);
}
//设置状态栏
void textChange(int model)
{
    //当前文本长度
    long sizetemp=getLength();
    //文本内容长度改变，model为open，或isSave为TRUE
    if (model && isSave && size!=sizetemp){
        isSave=FALSE;
        SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("已修改"));
    }
    //更新文本长度
    size=sizetemp;
    setStatus();
}
//菜单工具栏状态
void menuChange(HWND hwnd)
{
    CHARRANGE chrg;
    //获取文本选择区域
    SendMessage(hwndrich,EM_EXGETSEL,0,(LPARAM)&chrg);
    if (chrg.cpMin==chrg.cpMax){
        EnableMenuItem(GetMenu(hwnd),IDM_COPY,MF_BYCOMMAND|MF_GRAYED);
        EnableMenuItem(GetMenu(hwnd),IDM_SHEAR,MF_BYCOMMAND|MF_GRAYED);
        EnableMenuItem(GetMenu(hwnd),IDM_STYLE,MF_BYCOMMAND|MF_GRAYED);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_COPY,FALSE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_SHEAR,FALSE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_STYLE,FALSE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_BOLD,FALSE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_ITALIC,FALSE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_UNDERLINE,FALSE);
    }else{
        EnableMenuItem(GetMenu(hwnd),IDM_COPY,MF_BYCOMMAND|MF_ENABLED);
        EnableMenuItem(GetMenu(hwnd),IDM_SHEAR,MF_BYCOMMAND|MF_ENABLED);
        EnableMenuItem(GetMenu(hwnd),IDM_STYLE,MF_BYCOMMAND|MF_ENABLED);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_COPY,TRUE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_SHEAR,TRUE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_STYLE,TRUE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_BOLD,TRUE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_ITALIC,TRUE);
        SendMessage(hWndToolBar,TB_ENABLEBUTTON,IDM_UNDERLINE,TRUE);
        //更新格式化工具栏状态
        checkFormat();
    }
}
//新建文件
void newfile(HWND hwnd)
{
    if (isSave){
        SetWindowText(hwndrich,TEXT(""));
        SetWindowText(hwnd,defaultname);
    }else{
        int result=MessageBox(hwnd,TEXT("文件已经改动！需要保存吗？"),TEXT("提示"),MB_YESNOCANCEL|MB_ICONINFORMATION);
        switch(result)
        {
            case IDYES:
                savefile(hwnd,SAVEAS);
                break;
            case IDNO:
                //清空窗口内容，设置标题栏
                SetWindowText(hwndrich,TEXT(""));
                SetWindowText(hwnd,defaultname);
                SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("就绪"));
                isSave=TRUE;
                break;
            case IDCANCEL:
                break;
        }
    }
    txtcode=TXT_ASCII; //改变默认编码
}
//退出
void close(HWND hwnd)
{
    //检查文件保存状态
    if (isSave){
        PostQuitMessage(0);
    }else{
        int result=MessageBox(hwnd,TEXT("文件已经改动！需要保存吗？"),TEXT("提示"),
                              MB_YESNOCANCEL|MB_ICONINFORMATION);
        switch(result)
        {
            case IDYES:
                //保存文件再退出
                savefile(hwnd,SAVE);
                PostQuitMessage(0);
                break;
            case IDNO:
                PostQuitMessage(0);
                break;
            case IDCANCEL:
                break;
        }
    }
}
//设置段落格式
void setAlignment(int style)
{
    //获取当前段落格式  style格式参数
    SendMessage(hwndrich,EM_GETPARAFORMAT,0,(LPARAM)¶format);
    //设置文本居中，靠左，靠右属性有效字段PFM_ALIGNMENT
    paraformat.dwMask|=PFM_ALIGNMENT;
    paraformat.wAlignment=style;
    SendMessage(hwndrich,EM_SETPARAFORMAT,0,(LPARAM)¶format);
    //更改保存状态
    isSave=FALSE;
    SendMessage(hwndStatus, SB_SETTEXT, (WPARAM)0, (LPARAM)TEXT("已修改"));
}
//字符串截取
TCHAR* substring(TCHAR* ch,int pos,int length)
{
    char* pch=ch;
    //定义一个字符指针，指向传递进来的ch地址。
    TCHAR* subch=calloc(sizeof(TCHAR),length+1);
    //通过calloc来分配一个length长度的字符数组，返回的是字符指针。
    int i;
    pch=pch+pos;
    //是pch指针指向pos位置。
    for(i=0;i<length;i++)
    {
        subch[i]=*(pch++);
    }
    subch[length]='\0';//加上字符串结束符。
    return subch;		//返回分配的字符数组地址。
}