15windows_15_Edit编辑框

#include <windows.h>
#include <iostream>
#include "resource.h"
CHAR szText[256] = { 0 };
#define PrintLog(x) WriteConsole(g_hStdout, x, strlen(x), NULL, NULL)
HINSTANCE g_hInst = NULL; //窗口句柄
HANDLE g_hStdout = NULL; //控制台句柄
HWND g_hEdit = NULL; //保存Edit句柄
//WM_CREATE消息处理
void OnCreate(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
{
	//创建Edit文本编辑框
	g_hEdit = CreateWindow("EDIT", "Hello Edit", WS_EX_CLIENTEDGE|WS_VSCROLL | WS_HSCROLL|WS_CHILD | WS_VISIBLE | ES_AUTOHSCROLL | ES_PASSWORD | ES_MULTILINE | ES_AUTOHSCROLL | ES_AUTOHSCROLL | ES_AUTOVSCROLL,
		0, 0, 100, 200, hWnd, (HMENU)1001, g_hInst, NULL);
}
//让Edit铺满整个客户区
void OnSize(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
{
	int nWidth = LOWORD(lParam);
	int nHeight = HIWORD(lParam);
	if (g_hEdit != NULL)
	{
		MoveWindow(g_hEdit, 0, 0, nWidth, nHeight, TRUE);
	}
}
void OnSave()
{
	//获取文字长度 WM_GETTEXTLENGTH 用这个消息`
	LRESULT nTextLen = SendMessage(g_hEdit, WM_GETTEXTLENGTH, 0, 0);
	//获取文字
	CHAR *pszBuff = NULL;
	pszBuff = (CHAR *)malloc(nTextLen + 1); //+1就是为了不越界
	memset(pszBuff, 0, nTextLen + 1);
	SendMessage(g_hEdit, WM_GETTEXT, nTextLen + 1 , (LPARAM)pszBuff);
	//保存文件
	FILE *pFile = NULL;
	fopen_s(&pFile, "c:\\1.txt", "w+"); //打开文件
	fwrite(pszBuff, nTextLen, 1, pFile); //把文件写进文件
	fclose(pFile);
	free(pszBuff);
}
void OnOpen()
{
	//打开文件，读取数据
	FILE *pFile = NULL;
	fopen_s(&pFile, "c:\\1.txt", "r");
	fseek(pFile, 0, SEEK_END);//把fseek移动到文件结尾
	long nFileLen = ftell(pFile); //获得文件结尾的长度
	fseek(pFile, 0, SEEK_SET); //把fseek指针移动到原来位置
	CHAR *pszBuff = (CHAR*)malloc(nFileLen + 1); //多一个字符留给‘\0‘用
	memset(pszBuff, 0, nFileLen + 1); //把pszBuff置零
	fread(pszBuff, nFileLen, 1, pFile); //读取文件内容到buff
	fclose(pFile);
	//将字符显示在Edit窗口
	SendMessage(g_hEdit, WM_SETTEXT, 0, (LPARAM)pszBuff);
}
void OnCommand(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
{
	int nNotifyCode = HIWORD(wParam);//Ctrl ID
	int nEventID = LOWORD(wParam); // 事件ID
	switch (nEventID)
	{
	case 1001:
		switch (nNotifyCode)
		{
		case EN_CHANGE: //内容发生变化 
			//MessageBox(NULL, "EN_CHANGE", "EN", MB_OK);
			break;
		}
		break;
	case ID_SELALL: //全部选择
		//发送全选消息
		SendMessage(g_hEdit, EM_SETSEL, 0, -1); //从第0个开始，到-1结尾
		break;
	case ID_COPY: //复制
		SendMessage(g_hEdit, WM_COPY, 0, 0);
		break;
	case ID_PASTE: //粘贴消息
		SendMessage(g_hEdit, WM_PASTE, 0, 0);
		break;
	case ID_SAVE:
		OnSave();
		break;
	case ID_OPEN:
		OnOpen();
		break;
	case ID_EXIT:
		PostQuitMessage(0);
		break;
	}
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam)
{
	switch (nMsg)
	{
	case WM_CREATE:
		OnCreate(hWnd, nMsg, wParam, lParam);
		break;
	case WM_COMMAND:
		OnCommand(hWnd, nMsg, wParam, lParam);
		break;
	case WM_SIZE:
		OnSize(hWnd, nMsg, wParam, lParam);
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;
	}
	return DefWindowProc(hWnd, nMsg, wParam, lParam);
}
BOOL RegisterWnd(LPSTR pszClassName)
{
	WNDCLASSEX wce = { 0 };
	wce.cbSize = sizeof(wce);
	wce.cbClsExtra = 0;
	wce.cbWndExtra = 0;
	wce.hbrBackground = HBRUSH(COLOR_BTNFACE + 1);
	wce.hCursor = NULL;
	wce.hIcon = NULL;
	wce.hIconSm = NULL;
	wce.hInstance = g_hInst;
	wce.lpfnWndProc = WndProc;
	wce.lpszClassName = pszClassName;
	wce.lpszMenuName = NULL;
	wce.style = CS_HREDRAW | CS_VREDRAW;
	ATOM atom = RegisterClassEx(&wce);
	if (atom == NULL)
	{
		return FALSE;
	}
	else
	{
		return TRUE;
	}
}
HWND CreateWnd(LPSTR pszClassName)
{
	HMENU hMainMenu = LoadMenu(g_hInst, MAKEINTRESOURCE(IDR_MENU1));
	HWND hWnd = CreateWindowEx(0, pszClassName, "飞天", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
		CW_USEDEFAULT, NULL, hMainMenu, g_hInst, 0);
	return hWnd;
}
void ShowWnd(HWND hWnd)
{
	ShowWindow(hWnd, SW_SHOW);
	UpdateWindow(hWnd);
}
void Msg()
{
	MSG msg = { 0 };
	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
}
void ConsoleWnd()
{
	AllocConsole();
	g_hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
	CHAR szText[] = "Debug start:\n";
	WriteConsole(g_hStdout, szText, strlen(szText), NULL, NULL);
}
int WINAPI WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPSTR lpCmdLine, _In_ int nShowCmd)
{
	g_hInst = hInstance;
	//ConsoleWnd();
	RegisterWnd("oooo");
	HWND hWnd = CreateWnd("oooo");
	ShowWnd(hWnd);
	Msg();
	return 0;
}