[Win32 API学习] Edit，ListBox的用法，字体的设置

[Win32 API学习] Edit，ListBox的用法，字体的设置

Edit相关

Edit里的内容就是它的Text，GetWindowText()啥的函数可以直接用

ListBox的一些消息：

• LB_ADDSTRING：添加字符串(加到listbox最下面)，wParam 通常没用，lParam 为指向要添加的字符串的指针
• LB_INSERTSTRING：插入字符串, wParam 为插入位置的行标(从0开始)，lParam 为指向要插入的字符串的指针
• LB_DELETESTRING：删除指定位置的字符串，wParam 为要删除的行标，lParam 通常没用
• LB_GETCURSEL：获取当前选中行，wParam 和 lParam 都没用，Sendmessage函数返回选中行的行标，如果没有选中，返回 LB_ERR
• LB_GETCOUNT：返回Listbox中元素个数，wParam 和 lParam 都没用
• LB_GETTEXT：获取某一行的文本，wParam 为行标，lParam 为用来存结果的指针

本来想用ListView的。。结果没学会()
所以最后才会用拼成一个字符串的办法。。。
导致对输入格式有一定要求
结果就是好像还没有notepad好用。。。
所以就当练习了。。。。

字体设置

主要分两步：创建字体、设置字体

• 创建字体CreateFont()：参数不是一般的多，建议MSDN；返回字体句柄
• 设置字体SetFont()：第一个参数是窗体句柄，第二个参数是字体句柄

其它

• WM_MOVE消息：窗口位置改变时发送，wParam 没用，lParam 的低位是新的x坐标，高位是新的y坐标
• 感觉WCHAR[]和wstring混用不是好习惯

代码

编译需要手动链接gdi32库

#ifndef UNICODE
#define UNICODE
#endif
#ifndef _UNICODE
#define _UNICODE
#endif
#include "sign.h"
#include <windows.h>
#include <fstream>
#include <iostream>
#include <string>

typedef std::wstring wstring;
HINSTANCE hInst;
HWND hMain, hChildWnd;
HWND hList, hButtonAdd, hButtonDel, hButtonMod, hButtonOK, hButtonCancel, hEditEvent, hEditDeadline;
HFONT hFont;
WNDCLASS wcMain, wcChild;
BOOL bModify = false;
INT posx, posy;

LRESULT CALLBACK procMain(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK procChild(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
void setFont(HWND hwnd, HFONT h);
void prepare();
void loadData();
void saveData();
void procDel();
void procAdd();
void procModify();

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR pCmdLine, INT nCmdShow) {
	FreeConsole();
	hInst = hInstance;

	prepare();

	hMain = CreateWindow(L"MainWindow", L"Main", WS_OVERLAPPEDWINDOW ^ WS_SIZEBOX ^ WS_MAXIMIZEBOX, posx = CW_USEDEFAULT,
						 posy = CW_USEDEFAULT, 700, 300, NULL, NULL, hInst, NULL);
	if (!hMain)
		MessageBox(NULL, L"Main window creation failed!", L"Error", 0);
	ShowWindow(hMain, SW_SHOW);
	UpdateWindow(hMain);

	MSG msg;
	while (GetMessage(&msg, NULL, 0, 0)) {
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

	return 0;
}

void prepare() {
	// 支持中文文件读写(读的必须是GBK编码文件，写出来的也是GBK编码文件)
	setlocale(LC_ALL, "chs");

	// 主窗口类
	wcMain.hInstance = hInst;
	wcMain.lpfnWndProc = procMain;
	wcMain.lpszClassName = L"MainWindow";
	wcMain.style = CS_VREDRAW | CS_HREDRAW;
	wcMain.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
	wcMain.lpszMenuName = NULL;
	wcMain.hCursor = (HCURSOR)LoadCursor(NULL, IDC_ARROW);

	// 次级弹出窗口类
	wcChild.hInstance = hInst;
	wcChild.lpfnWndProc = procChild;
	wcChild.lpszClassName = L"ChildWindow";
	wcChild.style = CS_VREDRAW | CS_HREDRAW;
	wcChild.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
	wcChild.lpszMenuName = NULL;
	wcChild.hCursor = (HCURSOR)LoadCursor(NULL, IDC_ARROW);

	RegisterClass(&wcMain);
	RegisterClass(&wcChild);

	// 创建字体
	hFont = CreateFont(20, 0, 0, 0, FW_DONTCARE, FALSE, FALSE, FALSE, GB2312_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
					   DEFAULT_QUALITY, DEFAULT_PITCH | FF_SWISS, L"微软雅黑");
}

LRESULT CALLBACK procMain(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
	switch (msg) {
		case WM_DESTROY: {
			saveData();
			PostQuitMessage(0);
			break;
		}
		case WM_CREATE: {
			hList = CreateWindow(L"ListBox", L"", WS_CHILD | WS_VISIBLE | WS_BORDER | WS_VSCROLL, 0, 0, 500, 285, hwnd, (HMENU)IDLB_LISTBOX,
								 hInst, 0);
			// 这里的hwnd不能改成hMain，因为WM_CREATE消息在主函数中的CreateWindow函数结束前发送，此时hMain没有被赋值，为NULL

			setFont(hList, hFont);

			// 添加、删除、修改按钮
			hButtonAdd = CreateWindow(L"Button", L"Add", WS_CHILD | WS_VISIBLE, 550, 20, 100, 30, hwnd, (HMENU)IDB_ADD, hInst, 0);
			setFont(hButtonAdd, hFont);
			hButtonDel = CreateWindow(L"Button", L"Delete", WS_CHILD | WS_VISIBLE, 550, 80, 100, 30, hwnd, (HMENU)IDB_DEL, hInst, 0);
			setFont(hButtonDel, hFont);
			hButtonMod = CreateWindow(L"Button", L"Modify", WS_CHILD | WS_VISIBLE, 550, 140, 100, 30, hwnd, (HMENU)IDB_MOD, hInst, 0);
			setFont(hButtonMod, hFont);

			loadData();

			break;
		}
		case WM_MOVE:
			posx = LOWORD(lParam);
			posy = HIWORD(lParam);
			return DefWindowProc(hwnd, msg, wParam, lParam);
			break;
		case WM_COMMAND: {
			switch (LOWORD(wParam)) {
				// 单击添加按钮
				case IDB_ADD:
					procAdd();
					break;
				// 单击删除按钮
				case IDB_DEL:
					procDel();
					break;
				// 单击修改按钮
				case IDB_MOD:
					procModify();
					break;
				default:
					return DefWindowProc(hwnd, msg, wParam, lParam);
			}
			break;
		}
		default:
			return DefWindowProc(hwnd, msg, wParam, lParam);
	}
	return 0;
}

LRESULT CALLBACK procChild(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) {
	switch (msg) {
		case WM_CREATE: {
			// 禁用主窗口
			EnableWindow(hMain, false);

			// 创建文本框
			CreateWindow(L"Static", L"Event:", WS_CHILD | WS_VISIBLE, 20, 20, 120, 25, hwnd, (HMENU)IDT_TEXT1, hInst, 0);
			CreateWindow(L"Static", L"Deadline:", WS_CHILD | WS_VISIBLE, 160, 20, 120, 25, hwnd, (HMENU)IDT_TEXT2, hInst, 0);

			// 创建编辑框
			hEditEvent = CreateWindow(L"Edit", L"", WS_CHILD | WS_VISIBLE | WS_BORDER, 20, 50, 120, 25, hwnd, (HMENU)IDE_EDIT1, hInst, 0);
			setFont(hEditEvent, hFont);
			hEditDeadline =
				CreateWindow(L"Edit", L"", WS_CHILD | WS_VISIBLE | WS_BORDER, 160, 50, 120, 25, hwnd, (HMENU)IDE_EDIT2, hInst, 0);
			setFont(hEditDeadline, hFont);

			// 创建确认、取消按钮
			hButtonOK = CreateWindow(L"Button", L"OK", WS_CHILD | WS_VISIBLE, 25, 80, 100, 30, hwnd, (HMENU)IDB_OK, hInst, 0);
			setFont(hButtonOK, hFont);
			hButtonCancel = CreateWindow(L"Button", L"Cancel", WS_CHILD | WS_VISIBLE, 175, 80, 100, 30, hwnd, (HMENU)IDB_CANCEL, hInst, 0);
			setFont(hButtonCancel, hFont);
			if (bModify) {
				// 修改模式初始显示原串
				WCHAR wcbuf[255];
				INT pos = SendMessage(hList, LB_GETCURSEL, 0, 0);
				SendMessage(hList, LB_GETTEXT, (WPARAM)pos, (LPARAM)wcbuf);
				wstring strd(wcbuf), stre;
				int p = strd.find(L'>', 0);
				stre = strd.substr(p + 5, strd.length() - p);
				strd = strd.substr(1, p - 1);
				SetWindowText(hEditEvent, stre.c_str());
				SetWindowText(hEditDeadline, strd.c_str());
			}
			SetFocus(hEditEvent);
			break;
		}
		case WM_COMMAND: {
			switch (LOWORD(wParam)) {
				case IDB_CANCEL:
					SendMessage(hwnd, WM_CLOSE, 0, 0);
					break;
				case IDB_OK: {
					WCHAR wcbuf[255];
					wstring strd, stre;
					GetWindowText(hEditDeadline, wcbuf, 255);
					strd = wcbuf;
					if (strd.empty())
						strd = L"????????";
					GetWindowText(hEditEvent, wcbuf, 255);
					stre = wcbuf;
					if (bModify) {
						// 修改模式
						INT pos = SendMessage(hList, LB_GETCURSEL, 0, 0);
						SendMessage(hList, LB_DELETESTRING, (LPARAM)pos, 0);
						SendMessage(hList, LB_INSERTSTRING, (WPARAM)pos, (LPARAM)(L'<' + strd + L">    " + stre).c_str());
					} else {
						// 添加模式
						SendMessage(hList, LB_ADDSTRING, 0, (LPARAM)(L'<' + strd + L">    " + stre).c_str());
					}
					SendMessage(hwnd, WM_CLOSE, 0, 0);
					break;
				}
				default:
					return DefWindowProc(hwnd, msg, wParam, lParam);
			}
			break;
		}
		case WM_CLOSE: {
			//启用主窗口
			EnableWindow(hMain, true);
			DestroyWindow(hwnd);
			break;
		}
		default:
			return DefWindowProc(hwnd, msg, wParam, lParam);
	}

	return 0;
}

inline void setFont(HWND hwnd, HFONT h) { SendMessage(hwnd, WM_SETFONT, (WPARAM)h, TRUE); }

void procDel() {
	INT pos = SendMessage(hList, LB_GETCURSEL, 0, 0);
	if (pos != LB_ERR)
		SendMessage(hList, LB_DELETESTRING, (WPARAM)pos, 0);
}

void procAdd() {
	bModify = false;
	hChildWnd = CreateWindow(L"ChildWindow", L"Add", WS_OVERLAPPEDWINDOW ^ WS_SIZEBOX ^ WS_MINIMIZEBOX ^ WS_MAXIMIZEBOX, posx + 50,
							 posy + 50, 300, 150, NULL, NULL, hInst, 0);
	ShowWindow(hChildWnd, SW_SHOW);
	UpdateWindow(hChildWnd);
}

void procModify() {
	bModify = true;
	INT pos = SendMessage(hList, LB_GETCURSEL, 0, 0);
	if (pos != LB_ERR) {
		hChildWnd = CreateWindow(L"ChildWindow", L"Modify", WS_OVERLAPPEDWINDOW ^ WS_SIZEBOX ^ WS_MINIMIZEBOX ^ WS_MAXIMIZEBOX, posx + 50,
								 posy + 50, 300, 150, NULL, NULL, hInst, 0);
		ShowWindow(hChildWnd, SW_SHOW);
		UpdateWindow(hChildWnd);
	}
}

void loadData() {
	// 从文件读入数据并显示
	std::wifstream fin("data");
	WCHAR wcBuf[255];
	while (fin.getline(wcBuf, 255))
		SendMessage(hList, LB_ADDSTRING, 0, (LPARAM)wcBuf);
	fin.close();
}

void saveData() {
	std::wofstream fout("data");
	INT cnt = SendMessage(hList, LB_GETCOUNT, 0, 0);
	for (int i = 0; i < cnt; ++i) {
		WCHAR str[255];
		SendMessage(hList, LB_GETTEXT, (WPARAM)i, (LPARAM)str);
		fout << str << std::endl;
	}
	fout.close();
}