一个简单的文本编辑器。(是在DEV C++下写的）

//头文件//

　　main.h

　　#define CM_FILE_SAVEAS 9072

　　#define CM_FILE_EXIT 9071

　　#define CM_FILE_OPEN 9070

　　#define CM_ABOUT 9069

　　//主程序文件//

　　main.c

　　/*****************************************************/

　　#include <windows.h>

　　#pragma hdrstop

　　#include "Main.h"

　　static char g_szClassName[] = "MyWindowClass";

　　static HINSTANCE g_hInst = NULL;

　　#define IDC_MAIN_TEXT 1001

　　BOOL LoadFile(HWND hEdit, LPSTR pszFileName)

　　{

　　 HANDLE hFile;

　　 BOOL bSuccess = FALSE;

　　 hFile = CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL,

　　 OPEN_EXISTING, 0, 0);

　　 if(hFile != INVALID_HANDLE_VALUE)

　　 {

　　 DWORD dwFileSize;

　　 dwFileSize = GetFileSize(hFile, NULL);

　　 if(dwFileSize != 0xFFFFFFFF)

　　 {

　　 LPSTR pszFileText;

　　 pszFileText = (LPSTR)GlobalAlloc(GPTR, dwFileSize + 1);

　　 if(pszFileText != NULL)

　　 {

　　 DWORD dwRead;

　　 if(ReadFile(hFile, pszFileText, dwFileSize, &dwRead, NULL))

　　 {

　　 pszFileText[dwFileSize] = 0; // Null terminator

　　 if(SetWindowText(hEdit, pszFileText))

　　 bSuccess = TRUE; // It worked!

　　 }

　　 GlobalFree(pszFileText);

　　 }

　　 }

　　 CloseHandle(hFile);

　　 }

　　 return bSuccess;

　　}

　　BOOL SaveFile(HWND hEdit, LPSTR pszFileName)

　　{

　　 HANDLE hFile;

　　 BOOL bSuccess = FALSE;

　　 hFile = CreateFile(pszFileName, GENERIC_WRITE, 0, 0,

　　 CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);

　　 if(hFile != INVALID_HANDLE_VALUE)

　　 {

　　 DWORD dwTextLength;

　　 dwTextLength = GetWindowTextLength(hEdit);

　　 if(dwTextLength > 0)// No need to bother if there's no text.

　　 {

　　 LPSTR pszText;

　　 pszText = (LPSTR)GlobalAlloc(GPTR, dwTextLength + 1);

　　 if(pszText != NULL)

　　 {

　　 if(GetWindowText(hEdit, pszText, dwTextLength + 1))

　　 {

　　 DWORD dwWritten;

　　 if(WriteFile(hFile, pszText, dwTextLength, &dwWritten, NULL))

　　 bSuccess = TRUE;

　　 }

　　 GlobalFree(pszText);

　　 }

　　 }

　　 CloseHandle(hFile);

　　 }

　　 return bSuccess;

　　}

　　BOOL DoFileOpenSave(HWND hwnd, BOOL bSave)

　　{

　　 OPENFILENAME ofn;

　　 char szFileName[MAX_PATH];

　　 ZeroMemory(&ofn, sizeof(ofn));

　　 szFileName[0] = 0;

　　 ofn.lStructSize = sizeof(ofn);

　　 ofn.hwndOwner = hwnd;

　　 ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0\0";

　　 ofn.lpstrFile = szFileName;

　　 ofn.nMaxFile = MAX_PATH;

　　 ofn.lpstrDefExt = "txt";

　　 if(bSave)

　　 {

　　 ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY |

　　 OFN_OVERWRITEPROMPT;

　　

　　 if(GetSaveFileName(&ofn))

　　 {

　　 if(!SaveFile(GetDlgItem(hwnd, IDC_MAIN_TEXT), szFileName))

　　 {

　　 MessageBox(hwnd, "Save file failed.", "Error",

　　 MB_OK | MB_ICONEXCLAMATION);

　　 return FALSE;

　　 }

　　 }

　　 }

　　 else

　　 {

　　 ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;

　　 if(GetOpenFileName(&ofn))

　　 {

　　 if(!LoadFile(GetDlgItem(hwnd, IDC_MAIN_TEXT), szFileName))

　　 {

　　 MessageBox(hwnd, "Load of file failed.", "Error",

　　 MB_OK | MB_ICONEXCLAMATION);

　　 return FALSE;

　　 }

　　 }

　　 }

　　 return TRUE;

　　}

　　LRESULT CALLBACK WndProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)

　　{

　　 switch(Message)

　　 {

　　 case WM_CREATE:

　　 CreateWindow("EDIT", "",

　　 WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL | ES_MULTILINE |

　　 ES_WANTRETURN,

　　 CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,

　　 hwnd, (HMENU)IDC_MAIN_TEXT, g_hInst, NULL);

　　 SendDlgItemMessage(hwnd, IDC_MAIN_TEXT, WM_SETFONT,

　　 (WPARAM)GetStockObject(DEFAULT_GUI_FONT), MAKELPARAM(TRUE, 0));

　　 break;

　　 case WM_SIZE:

　　 if(wParam != SIZE_MINIMIZED)

　　 MoveWindow(GetDlgItem(hwnd, IDC_MAIN_TEXT), 0, 0, LOWORD(lParam),

　　 HIWORD(lParam), TRUE);

　　 break;

　　 case WM_SETFOCUS:

　　 SetFocus(GetDlgItem(hwnd, IDC_MAIN_TEXT));

　　 break;

　　 case WM_COMMAND:

　　 switch(LOWORD(wParam))

　　 {

　　 case CM_FILE_OPEN:

　　 DoFileOpenSave(hwnd, FALSE);

　　 break;

　　 case CM_FILE_SAVEAS:

　　 DoFileOpenSave(hwnd, TRUE);

　　 break;

　　 case CM_FILE_EXIT:

　　 PostMessage(hwnd, WM_CLOSE, 0, 0);

　　 break;

　　 case CM_ABOUT:

　　 MessageBox (NULL, "File Editor for Windows !\n Using the Win32 API" , "About...", 0);

　　 }

　　 break;

　　 case WM_CLOSE:

　　 DestroyWindow(hwnd);

　　 break;

　　 case WM_DESTROY:

　　 PostQuitMessage(0);

　　 break;

　　 default:

　　 return DefWindowProc(hwnd, Message, wParam, lParam);

　　 }

　　 return 0;

　　}

　　int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,

　　 LPSTR lpCmdLine, int nCmdShow)

　　{

　　 WNDCLASSEX WndClass;

　　 HWND hwnd;

　　 MSG Msg;

　　 g_hInst = hInstance;

　　 WndClass.cbSize = sizeof(WNDCLASSEX);

　　 WndClass.style = 0;

　　 WndClass.lpfnWndProc = WndProc;

　　 WndClass.cbClsExtra = 0;

　　 WndClass.cbWndExtra = 0;

　　 WndClass.hInstance = g_hInst;

　　 WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);

　　 WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);

　　 WndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);

　　 WndClass.lpszMenuName = "MAINMENU";

　　 WndClass.lpszClassName = g_szClassName;

　　 WndClass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);

　　 if(!RegisterClassEx(&WndClass))

　　 {

　　 MessageBox(0, "Window Registration Failed!", "Error!",

　　 MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);

　　 return 0;

　　 }

　　 hwnd = CreateWindowEx(

　　 WS_EX_CLIENTEDGE,

　　 g_szClassName,

　　 "A File Program",

　　 WS_OVERLAPPEDWINDOW,

　　 CW_USEDEFAULT, CW_USEDEFAULT, 320, 240,

　　 NULL, NULL, g_hInst, NULL);

　　 if(hwnd == NULL)

　　 {

　　 MessageBox(0, "Window Creation Failed!", "Error!",

　　 MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);

　　 return 0;

　　 }

　　 ShowWindow(hwnd, nCmdShow);

　　 UpdateWindow(hwnd);

　　 while(GetMessage(&Msg, NULL, 0, 0))

　　 {

　　 TranslateMessage(&Msg);

　　 DispatchMessage(&Msg);

　　 }

　　 return Msg.wParam;

　　}

//头文件// main.h #define CM_FILE_SAVEAS 9072 #define CM_FILE_EXIT 9071 #define CM_FILE_OPEN 9070 #define CM_ABOUT 9069 //主程序文件// main.c /*****************************************************/ #include <windows.h> #pragma hdrstop #include "Main.h" static char
g_szClassName[] = "MyWindowClass"; static HINSTANCE g_hInst = NULL; #define IDC_MAIN_TEXT 1001 BOOL LoadFile(HWND hEdit, LPSTR pszFileName) { HANDLE hFile; BOOL bSuccess = FALSE; hFile = CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING,
0, 0); if(hFile != INVALID_HANDLE_VALUE) { DWORD dwFileSize; dwFileSize = GetFileSize(hFile, NULL); if(dwFileSize != 0xFFFFFFFF) { LPSTR pszFileText; pszFileText = (LPSTR)GlobalAlloc(GPTR, dwFileSize + 1); if(pszFileText != NULL) { DWORD dwRead; if(ReadFile(hFile,
pszFileText, dwFileSize, &dwRead, NULL)) { pszFileText[dwFileSize] = 0; // Null terminator if(SetWindowText(hEdit, pszFileText)) bSuccess = TRUE; // It worked! } GlobalFree(pszFileText); } } CloseHandle(hFile); } return bSuccess; } BOOL SaveFile(HWND hEdit,
LPSTR pszFileName) { HANDLE hFile; BOOL bSuccess = FALSE; hFile = CreateFile(pszFileName, GENERIC_WRITE, 0, 0, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0); if(hFile != INVALID_HANDLE_VALUE) { DWORD dwTextLength; dwTextLength = GetWindowTextLength(hEdit); if(dwTextLength
> 0)// No need to bother if there's no text. { LPSTR pszText; pszText = (LPSTR)GlobalAlloc(GPTR, dwTextLength + 1); if(pszText != NULL) { if(GetWindowText(hEdit, pszText, dwTextLength + 1)) { DWORD dwWritten; if(WriteFile(hFile, pszText, dwTextLength, &dwWritten,
NULL)) bSuccess = TRUE; } GlobalFree(pszText); } } CloseHandle(hFile); } return bSuccess; } BOOL DoFileOpenSave(HWND hwnd, BOOL bSave) { OPENFILENAME ofn; char szFileName[MAX_PATH]; ZeroMemory(&ofn, sizeof(ofn)); szFileName[0] = 0; ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hwnd; ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0\0"; ofn.lpstrFile = szFileName; ofn.nMaxFile = MAX_PATH; ofn.lpstrDefExt = "txt"; if(bSave) { ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
if(GetSaveFileName(&ofn)) { if(!SaveFile(GetDlgItem(hwnd, IDC_MAIN_TEXT), szFileName)) { MessageBox(hwnd, "Save file failed.", "Error", MB_OK | MB_ICONEXCLAMATION); return FALSE; } } } else { ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
if(GetOpenFileName(&ofn)) { if(!LoadFile(GetDlgItem(hwnd, IDC_MAIN_TEXT), szFileName)) { MessageBox(hwnd, "Load of file failed.", "Error", MB_OK | MB_ICONEXCLAMATION); return FALSE; } } } return TRUE; } LRESULT CALLBACK WndProc(HWND hwnd, UINT Message, WPARAM
wParam, LPARAM lParam) { switch(Message) { case WM_CREATE: CreateWindow("EDIT", "", WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL | ES_MULTILINE | ES_WANTRETURN, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, hwnd, (HMENU)IDC_MAIN_TEXT, g_hInst,
NULL); SendDlgItemMessage(hwnd, IDC_MAIN_TEXT, WM_SETFONT, (WPARAM)GetStockObject(DEFAULT_GUI_FONT), MAKELPARAM(TRUE, 0)); break; case WM_SIZE: if(wParam != SIZE_MINIMIZED) MoveWindow(GetDlgItem(hwnd, IDC_MAIN_TEXT), 0, 0, LOWORD(lParam), HIWORD(lParam), TRUE);
break; case WM_SETFOCUS: SetFocus(GetDlgItem(hwnd, IDC_MAIN_TEXT)); break; case WM_COMMAND: switch(LOWORD(wParam)) { case CM_FILE_OPEN: DoFileOpenSave(hwnd, FALSE); break; case CM_FILE_SAVEAS: DoFileOpenSave(hwnd, TRUE); break; case CM_FILE_EXIT: PostMessage(hwnd,
WM_CLOSE, 0, 0); break; case CM_ABOUT: MessageBox (NULL, "File Editor for Windows !\n Using the Win32 API" , "About...", 0); } break; case WM_CLOSE: DestroyWindow(hwnd); break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hwnd,
Message, wParam, lParam); } return 0; } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { WNDCLASSEX WndClass; HWND hwnd; MSG Msg; g_hInst = hInstance; WndClass.cbSize = sizeof(WNDCLASSEX); WndClass.style = 0;
WndClass.lpfnWndProc = WndProc; WndClass.cbClsExtra = 0; WndClass.cbWndExtra = 0; WndClass.hInstance = g_hInst; WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION); WndClass.hCursor = LoadCursor(NULL, IDC_ARROW); WndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
WndClass.lpszMenuName = "MAINMENU"; WndClass.lpszClassName = g_szClassName; WndClass.hIconSm = LoadIcon(NULL, IDI_APPLICATION); if(!RegisterClassEx(&WndClass)) { MessageBox(0, "Window Registration Failed!", "Error!", MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);
return 0; } hwnd = CreateWindowEx( WS_EX_CLIENTEDGE, g_szClassName, "A File Program", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 320, 240, NULL, NULL, g_hInst, NULL); if(hwnd == NULL) { MessageBox(0, "Window Creation Failed!", "Error!", MB_ICONEXCLAMATION
| MB_OK | MB_SYSTEMMODAL); return 0; } ShowWindow(hwnd, nCmdShow); UpdateWindow(hwnd); while(GetMessage(&Msg, NULL, 0, 0)) { TranslateMessage(&Msg); DispatchMessage(&Msg); } return Msg.wParam; }