“可视化程序设计”-课内考查

// 2019339901078_李海龙_课内考查.cpp : 定义应用程序的入口点。 // #include "framework.h" #include "2019339901078_李海龙_课内考查.h" #define MAX_LOADSTRING 100 // 全局变量: HINSTANCE hInst; // 当前实例 WCHAR szTitle[MAX_LOADSTRING]; // 标题栏文本 WCHAR szWindowClass[MAX_LOADSTRING]; // 主窗口类名 // 此代码模块中包含的函数的前向声明: ATOM MyRegisterClass(HINSTANCE hInstance); BOOL InitInstance(HINSTANCE, int); LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM); HMENU hmenu, hmenut, hmenuw; int flag = 0; int APIENTRY wWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPWSTR lpCmdLine, _In_ int nCmdShow) { UNREFERENCED_PARAMETER(hPrevInstance); UNREFERENCED_PARAMETER(lpCmdLine); // TODO: 在此处放置代码。 // 初始化全局字符串 LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadStringW(hInstance, IDC_MY2019339901078, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // 执行应用程序初始化: if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_MY2019339901078)); MSG msg; // 主消息循环: while (GetMessage(&msg, nullptr, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } return (int) msg.wParam; } // // 函数: MyRegisterClass() // // 目标: 注册窗口类。 // ATOM MyRegisterClass(HINSTANCE hInstance) { WNDCLASSEXW wcex; wcex.cbSize = sizeof(WNDCLASSEX); wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = WndProc; wcex.cbClsExtra = 0; wcex.cbWndExtra = 0; wcex.hInstance = hInstance; wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDC_MY2019339901078)); wcex.hCursor = LoadCursorFromFile(_T("Point.cur"));// wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = MAKEINTRESOURCEW(IDC_MY2019339901078); wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL)); return RegisterClassExW(&wcex); } // // 函数: InitInstance(HINSTANCE, int) // // 目标: 保存实例句柄并创建主窗口 // // 注释: // // 在此函数中，我们在全局变量中保存实例句柄并 // 创建和显示主程序窗口。 // BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) { hInst = hInstance; // 将实例句柄存储在全局变量中 HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, nullptr, nullptr, hInstance, nullptr); if (!hWnd) { return FALSE; } hmenu = GetMenu(hWnd); DeleteMenu(hmenu, 0, MF_POPUP | MF_BYPOSITION); hmenut = CreateMenu(); hmenuw = CreateMenu(); AppendMenu(hmenuw, MF_ENABLED, WM_CREATE, _T("创建")); AppendMenu(hmenuw, MF_ENABLED, MF_POPUP, _T("删除"));//MF_POPUP 指定菜单项打开下拉菜单或子菜单。 uIDNewItem 参数指定下拉菜单或子菜单的句柄。 此标志用于向菜单栏添加菜单名称，或将子菜单打开到下拉菜单、子菜单或快捷菜单的菜单项。 AppendMenu(hmenuw, MF_ENABLED, IDM_EXIT, _T("退出")); InsertMenu(hmenu, 0, MF_POPUP | MF_BYPOSITION, (UINT)hmenuw, _T("文件(&F)")); DrawMenuBar(hWnd); ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE; } // // 函数: WndProc(HWND, UINT, WPARAM, LPARAM) // // 目标: 处理主窗口的消息。 // // WM_COMMAND - 处理应用程序菜单 // WM_PAINT - 绘制主窗口 // WM_DESTROY - 发送退出消息并返回 // // LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { PAINTSTRUCT ps; HDC hDC; HBRUSH hBrush; HPEN hPen; switch (message) { case WM_COMMAND: { int wmId = LOWORD(wParam); // 分析菜单选择: switch (wmId) { case WM_PAINT: flag = 1; InvalidateRect(hWnd, NULL, 1); break; case WM_CREATE: EnableMenuItem(hmenuw, WM_CREATE, MF_GRAYED); EnableMenuItem(hmenuw, MF_POPUP, MF_ENABLED); hmenut = CreateMenu(); AppendMenu(hmenut, MF_ENABLED, WM_PAINT, _T("绘图")); InsertMenu(hmenu, 1, MF_POPUP | MF_BYPOSITION, (UINT)hmenut, _T("编辑(&E)")); DrawMenuBar(hWnd); break; case MF_POPUP: EnableMenuItem(hmenuw, WM_CREATE, MF_ENABLED); EnableMenuItem(hmenuw, MF_POPUP, MF_GRAYED); DeleteMenu(hmenu, 1, MF_BYPOSITION); DrawMenuBar(hWnd); break; case IDM_ABOUT: DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About); break; case IDM_EXIT: DestroyWindow(hWnd); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } } break; case WM_PAINT: { hDC = BeginPaint(hWnd, &ps); // TODO: 在此处添加使用 hdc 的任何绘图代码... hBrush = CreateHatchBrush(HS_CROSS, RGB(255, 0, 0));//红色网状 SelectObject(hDC, hBrush); //选择画刷 hPen = CreatePen(PS_SOLID, 1, RGB(0, 0, 255)); //创建画笔 SelectObject(hDC, hPen); //选择画笔 Pie(hDC, 213, 137, 288, 212, 240, 137, 260, 137); //画一个圆饼 Rectangle(hDC, 213, 212, 287, 250); //画一个长方形 RoundRect(hDC, 213, 100, 287, 137, 20, 20); //画一个圆角长方形 DeleteObject(hPen); //删除画笔 DeleteObject(hBrush); //删除画刷 hPen = (HPEN)GetStockObject(BLACK_PEN); //获取系统定义的空画笔 SelectObject(hDC, hPen); //选择画笔 hBrush = CreateSolidBrush(RGB(255, 0, 0)); SelectObject(hDC, hBrush); //选择画刷 Rectangle(hDC, 400, 100, 600, 300); //画一个长方形 if (flag == 1) { DeleteObject(hBrush); //删除画刷 hBrush = (HBRUSH)GetStockObject(NULL_BRUSH); SelectObject(hDC, hBrush); //选择画刷 DeleteObject(hPen); //删除画笔 hPen = (HPEN)GetStockObject(BLACK_PEN); //创建画笔 SelectObject(hDC, hPen); //选择画笔 RoundRect(hDC, 700, 100, 800, 200, 20, 20); //画一个圆角长方形 DeleteObject(hBrush); //删除画刷 hBrush = (HBRUSH)GetStockObject(BLACK_BRUSH); SelectObject(hDC, hBrush); //选择画刷 Pie(hDC, 700, 110, 800, 190, 0, 0, 0, 0); //画一个圆饼 //Arc(hDC, 700, 110, 800, 190, 0, 0, 0, 0); } DeleteObject(hPen); //删除画笔 DeleteObject(hBrush); //删除画刷 EndPaint(hWnd, &ps); } break; case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd, message, wParam, lParam); } return 0; } // “关于”框的消息处理程序。 INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) { UNREFERENCED_PARAMETER(lParam); switch (message