http://blog.csdn.net/yueguanghaidao/article/details/6949249 2011 最近想好好研究C,于是便拿记事本这个小程序练练手。
自己从网上找了一个挺不错的,就从这个开始学习吧。。。。
一:代码
先建立一文件夹->方便管理与查看
拿我来说,在d盘根目录下新建note文件夹
1.新建一note.rc资源文件,代码如下。
- #include "sample.h"
-
- A ICON MOVEABLE PURE LOADONCALL DISCARDABLE "sample.ico"
-
- MAINMENU MENU
- {
- POPUP "文件(&F)"
- {
- MENUITEM "打开(&O)...", CM_FILE_OPEN
- MENUITEM "另存为(&S)...", CM_FILE_SAVEAS
- MENUITEM SEPARATOR
- MENUITEM "关闭", CM_FILE_EXIT
- }
-
- POPUP "帮助(&H)"
- {
- MENUITEM "关于(&A)", CM_ABOUT
- }
- }
2.新建sample.h,代码如下
- #define CM_FILE_SAVEAS 9072
- #define CM_FILE_EXIT 9071
- #define CM_FILE_OPEN 9070
- #define CM_ABOUT 9069
3.新建源程序note.c ,代码如下
- #include <windows.h>
- #include "sample.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;
- if(SetWindowText(hEdit, pszFileText))
- bSuccess = TRUE;
- }
- 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)
- {
- 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 = "文本文件 (*.txt)\0*.txt\0所有文件 (*.*)\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, "保存文件失败.", "错误信息",
- 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, "打开文件失败.", "错误信息",
- 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, "一个Windows C 记事本程序" , "关于...", 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, "注册窗口失败", "错误信息",
- MB_ICONEXCLAMATION | MB_OK | MB_SYSTEMMODAL);
- return 0;
- }
-
- hwnd = CreateWindowEx(
- WS_EX_CLIENTEDGE,
- g_szClassName,
- "一个记事本程序",
- WS_OVERLAPPEDWINDOW,
- CW_USEDEFAULT, CW_USEDEFAULT, 800, 600,
- NULL, NULL, g_hInst, NULL);
-
-
- if(hwnd == NULL)
- {
- MessageBox(0, "创建窗口失败", "错误信息",
- 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;
- }
二:编译,连接运行
在编译之前需要一个sample.ico图标.
打开运行,输入cmd,回车,进入dos命令行
进入d:\note下
1.用dir命令列一下当前目录包含文件。
2.编译源程序(用cl编译器,/c的意思是:只编译,不连接)
用dir命令查看一下当前目录,是不是多了一个note.obj文件。
3.编译资源文件(用rc编译器编译)
用dir命令查看一下当前目录,是不是多了一个note.RES文件.
4.连接
用dir命令查看一下当前目录,是不是多了一个note.exe可执行查询.
打开看看,是不是很有成就感啊,没有借助任何编译器。
我们不仅要问,为什么要加入那么多的lib文件呢?
在windows编程中,有三个基本的lib文件,即kernel32.lib,user32.lib,gdi32.lib
所以一般就添加这几个,我们连接一下试试。
不幸的是报错了,我们看看
这一看就晕了,什么意思啊
稍微有经验的的人就知道这是缺少lib库文件。
GetOpenFileName这个函数用MSDN查看一下,翻到末尾,有没有看到
Import Library: Use comdlg32.lib -》这个提示
所以我们把comdlg32.lib加进去。
这里有一个问题?为什么头文件sample.h没有用到呢?
解答:在编译连接时不需要指定头文件,将头文件放到当前目录下,系统会自动引用。
三:下面的工作就是仔细分析代码了,借助MSDN看懂不是很难。
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