``` #include "stdafx.h" #include <windows.h> #include <windowsx.h> #include "Win32Project1Mouse1Test181102.h" #define MAX_LOADSTRING 100 // 全局变量: HINSTANCE hInst; // 当前实例 TCHAR szTitle[MAX_LOADSTRING]; // 标题栏文本 TCHAR szWindowClass[MAX_LOADSTRING]; // 主窗口类名 HINSTANCE hinstanc01e; POINT m_lastMousePo2s; // 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); int APIENTRY _tWinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPTSTR lpCmdLine, _In_ int nCmdShow) { hinstanc01e = hInstance; UNREFERENCED_PARAMETER(hPrevInstance); UNREFERENCED_PARAMETER(lpCmdLine); // TODO: 在此放置代码。 MSG msg; HACCEL hAccelTable; // 初始化全局字符串 LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); LoadString(hInstance, IDC_WIN32PROJECT1MOUSE1TEST181102, szWindowClass, MAX_LOADSTRING); MyRegisterClass(hInstance); // 执行应用程序初始化: if (!InitInstance (hInstance, nCmdShow)) { return FALSE; } hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_WIN32PROJECT1MOUSE1TEST181102)); // 主消息循环: while (GetMessage(&msg, NULL, 0, 0)) { if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); } } return (int) msg.wParam; } // // 函数: MyRegisterClass() // // 目的: 注册窗口类。 // ATOM MyRegisterClass(HINSTANCE hInstance) { WNDCLASSEX 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(IDI_WIN32PROJECT1MOUSE1TEST181102)); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); wcex.lpszMenuName = MAKEINTRESOURCE(IDC_WIN32PROJECT1MOUSE1TEST181102); wcex.lpszClassName = szWindowClass; wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL)); return RegisterClassEx(&wcex); } // // 函数: InitInstance(HINSTANCE, int) // // 目的: 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) { HWND hWnd; hInst = hInstance; // 将实例句柄存储在全局变量中 hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); if (!hWnd) { return FALSE; } ShowWindow(hWnd, nCmdShow); UpdateWindow(hWnd); return TRUE; } // // 函数: WndProc(HWND, UINT, WPARAM, LPARAM) // // 目的: 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) { int wmId, wmEvent; PAINTSTRUCT ps; RECT rect; HDC hdc; HDC hcmdc; BITMAP bmp; HPEN pe01n; switch (message) { case WM_COMMAND: wmId = LOWORD(wParam); wmEvent = HIWORD(wParam); // 分析菜单选择: switch (wmId) { 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: {//case110 hdc = BeginPaint(hWnd, &ps); // TODO: 在此添加任意绘图代码... // //显示文本 GetClientRect(hWnd, &rect);//hwnd, &rect); { char a1[] = "hello1w my first windows program"; LPCTSTR lpString = _T("hello1w my first windows program"); DrawText(hdc, lpString, strlen(a1), &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER); } //画笔 MoveToEx(hdc, (rect.left + rect.right) / 2 - 130, (rect.top + rect.bottom) / 2 - 50, NULL); LineTo(hdc, (rect.left + rect.right) / 2 + 130, (rect.top + rect.bottom) / 2 - 50); pe01n = CreatePen(PS_DOT, 3, RGB(255, 100, 100)); SelectObject(hdc, pe01n); MoveToEx(hdc, (rect.left + rect.right) / 2 - 130, (rect.top + rect.bottom) / 2 + 50, NULL); LineTo(hdc, (rect.left + rect.right) / 2 + 130 + 100, (rect.top + rect.bottom) / 2 + 50); // EndPaint(hWnd, &ps); }//case110 break; // //绘制圆角矩形 case WM_LBUTTONDOWN: { hdc = GetDC(hWnd);// (hwnd); // RoundRect(hdc, 10, 10, 110, 60, 10, 10); int x1 = GET_X_LPARAM(lParam); int y1 = GET_Y_LPARAM(lParam); m_lastMousePo2s.x = x1; m_lastMousePo2s.y = y1; // RoundRect(hdc, 10, 10, x1, y1, 10, 10); ReleaseDC(hWnd, hdc); } break; //贴图 case WM_RBUTTONDOWN: hdc = GetDC(hWnd); HBITMAP hBmp; hBmp = LoadBitmap(hinstanc01e, MAKEINTRESOURCE("2012110109514776.bmp"));// jpg")); // IDB_BITMAP1)); hcmdc = CreateCompatibleDC(hdc); SelectObject(hcmdc, hBmp); GetClientRect(hWnd, &rect); GetObject(hBmp, sizeof(BITMAP), &bmp); StretchBlt(hdc, 0, 0, rect.right - rect.left, rect.bottom - rect.top, hcmdc, 0, 0, bmp.bmWidth, bmp.bmHeight, SRCCOPY); //BitBlt(hdc,0,0,rect.right-rect.left,rect.bottom-rect.top,hcmdc,0,0,SRCCOPY); ReleaseDC(hWnd, hdc);//ReleaseDC(hwnd, hdc); 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) { case WM_INITDIALOG: return (INT_PTR)TRUE; case WM_COMMAND: if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) { EndDialog(hDlg, LOWORD(wParam)); return (INT_PTR)TRUE; } break; } return (INT_PTR)FALSE; } ```