myeditor.cpp

文本编辑器是最简单的ＶＣ程序

// myeditor.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"
#include "edit.h"
#include "myeditor.h"

#define MAX_LOADSTRING 100

// Global Variables:
edit e;                                                     //类变量声明
HINSTANCE hInst;							             	// current instance
TCHAR szTitle[MAX_LOADSTRING];								// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];						// The title bar text

// Foward declarations of functions included in this code module:
ATOM				MyRegisterClass(HINSTANCE hInstance);
BOOL				InitInstance(HINSTANCE, int);
LRESULT CALLBACK	WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	Warning(HWND, UINT, WPARAM, LPARAM);
HWND hWnd;

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
 	// TODO: Place code here.
	MSG msg;
	HACCEL hAccelTable;
    
	// Initialize global strings
	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	LoadString(hInstance, IDC_MYEDITOR, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance);

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_MYEDITOR);
    
	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0)) 
	{
		if (!TranslateAccelerator(hWnd, hAccelTable, &msg)) 
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    This function and its usage is only necessary if you want this code
//    to be compatible with Win32 systems prior to the 'RegisterClassEx'
//    function that was added to Windows 95. It is important to call this function
//    so that the application will get 'well formed' small icons associated
//    with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
	WNDCLASSEX wcex;

	wcex.cbSize = sizeof(WNDCLASSEX); 

	wcex.style			= CS_HREDRAW | CS_VREDRAW;
	wcex.lpfnWndProc	= (WNDPROC)WndProc;
	wcex.cbClsExtra		= 0;
	wcex.cbWndExtra		= 0;
	wcex.hInstance		= hInstance;
	wcex.hIcon			= LoadIcon(hInstance, (LPCTSTR)IDI_MYEDITOR);
	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);
	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);
	wcex.lpszMenuName	= (LPCSTR)IDC_MYEDITOR;
	wcex.lpszClassName	= szWindowClass;
	wcex.hIconSm		= LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);
	return RegisterClassEx(&wcex);
}

//
//   FUNCTION: InitInstance(HANDLE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   
   hInst = hInstance; // Store instance handle in our global variable

   hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW| WM_HSCROLL| WM_VSCROLL,
      CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);
   e.gethwnd(hWnd);                                                       //把窗口句柄传到类
   
   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	static HWND hWndEdit;
	RECT rect;
	//判断文件是否被修改的变量
	static BOOL fChange=FALSE;
	//文件操作所用变量
    static TCHAR        szFileName[MAX_PATH], szTitleName[MAX_PATH] ;
    static OPENFILENAME ofn ;
    //字体操作所用变量
	static HFONT hSetFont;
	static CHOOSEFONT cf;                                                //对非模态对话框必须定义为static
	//搜索所用变量
    static FINDREPLACE  fr;                                              // 对非模态对话框必须定义为static
    LPFINDREPLACE       pfr; 
    static int          iOffset ;
    static UINT         messageFindReplace ;
    static HWND         hDlgModeless;
    //注册查找的窗口消息 
	messageFindReplace= RegisterWindowMessage(FINDMSGSTRING);              
    
	//处理窗口消息
	switch (message) 
	{                 
	    case WM_CREATE:                                                    //初始化通用对话框
            //获得窗口大小
			GetClientRect(hWnd,&rect);
			//建立编辑框
			hWndEdit=CreateWindow("EDIT", "",
                                WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL |
                                WS_BORDER  | ES_MULTILINE |
                                ES_NOHIDESEL | ES_AUTOHSCROLL | ES_AUTOVSCROLL,
                                0, 0, rect.right-rect.left, rect.bottom-rect.top,
                                hWnd, (HMENU)IDC_EDIT, hInst, NULL) ;   
	   
	    e.FontInitialize(hWndEdit);                                         //字体初始化
	
		e.gethwndedit(hWndEdit);                                            //把编辑框句柄传到类

		break;		
		case WM_COMMAND:
			wmId    = LOWORD(wParam); 
			wmEvent = HIWORD(wParam); 
			
			// Parse the menu selections:
			//处理菜单消息
			switch (wmId)
			{
				case IDM_ABOUT:                                             // 处理编辑菜单
				   
				   DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);            
				   
				  break;
				case IDM_NEW:                                               // 处理新建菜单
                   
				   if(fChange==TRUE)                                        //判断文件是否被修改
				   {                 				
				   //如果被修改了，发送是否保存当前文件消息并处理
				   switch(MessageBox(hWnd,TEXT ("是否保存当前文件?"),"警告",MB_YESNOCANCEL))
				   {
				    case IDYES:                                             //保存文件并新建
					   if (ofn.lpstrFileTitle == NULL)
					   {
			           e.FileInitialize(&ofn);
			           e.FileSaveDlg(&ofn ,szFileName ,szTitleName);
					   }
			           e.FileWrite(ofn.lpstrFile);
			           SetWindowText(hWnd,"");
				       SetWindowText(hWndEdit,"");
				       InvalidateRect(hWndEdit,NULL,TRUE);
			           fChange=FALSE;
					   break;
                    case IDNO:                                               //不保存，新建
				       SetWindowText(hWnd,"");
				       SetWindowText(hWndEdit,"");
				       InvalidateRect(hWndEdit,NULL,TRUE);
			           fChange=FALSE;
				       break;
				    case IDCANCEL:                                           //取消操作
				       fChange=TRUE;
					   break; 
				   }
				   }
				   else                                                      //新建文件
				   {
				       SetWindowText(hWnd,"");
				       SetWindowText(hWndEdit,"");
				       InvalidateRect(hWndEdit,NULL,TRUE);