企业官网建设流程全解析

极简测试

//编译运行生成task.json后，应在 // "${fileDirname}\\${fileBasenameNoExtension}.exe"之后添加以下内容 // , "-mwindows" #include <windows.h> LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { switch (msg) { case WM_PAINT: { PAINTSTRUCT ps; HDC hdc = BeginPaint(hwnd, &ps); HBRUSH red = CreateSolidBrush(RGB(255,0,0)); RECT sq = {50, 50, 150, 150}; // 局部变量，安全取地址 FillRect(hdc, &sq, red); DeleteObject(red); HBRUSH blue = CreateSolidBrush(RGB(0,0,255)); SelectObject(hdc, blue); Ellipse(hdc, 200, 50, 300, 150); DeleteObject(blue); EndPaint(hwnd, &ps); return 0; } case WM_DESTROY: PostQuitMessage(0); return 0; default: return DefWindowProcW(hwnd, msg, wParam, lParam); } } int WINAPI WinMain(HINSTANCE hInst, HINSTANCE, LPSTR, int nShow) { WNDCLASSW wc = {0}; wc.lpfnWndProc = WndProc; wc.hInstance = hInst; wc.lpszClassName = L"Draw"; wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); RegisterClassW(&wc); HWND hwnd = CreateWindowExW(0, L"Draw", L"绘图", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 400, 200, NULL, NULL, hInst, NULL); ShowWindow(hwnd, nShow); UpdateWindow(hwnd); MSG msg; while (GetMessageW(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessageW(&msg); } return msg.wParam; }

面向过程写法

//编译运行生成task.json后，应检查是否在 // "${fileDirname}\\${fileBasenameNoExtension}.exe"之后添加了以下内容 // ,"-lgdi32", "-mwindows" #include <windows.h> #include <cstdlib> // 绘图函数，直接拿到窗口句柄绘图 void DrawPoint(HWND hwnd, int x, int y, COLORREF color) { HDC hdc = GetDC(hwnd); SetPixel(hdc, x, y, color); ReleaseDC(hwnd, hdc); } void DrawLine(HWND hwnd, int x1, int y1, int x2, int y2, COLORREF color) { HDC hdc = GetDC(hwnd); HPEN pen = CreatePen(PS_SOLID, 1, color); HPEN oldPen = (HPEN)SelectObject(hdc, pen); MoveToEx(hdc, x1, y1, nullptr); LineTo(hdc, x2, y2); SelectObject(hdc, oldPen); DeleteObject(pen); ReleaseDC(hwnd, hdc); } LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { return msg == WM_DESTROY ? (PostQuitMessage(0), 0) : DefWindowProcA(hwnd, msg, wParam, lParam); } int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int) { //==========1.初始化程序============== const char* className = "SimpleWin"; WNDCLASSEXA wc{}; wc.cbSize = sizeof(wc); wc.lpfnWndProc = WndProc; wc.hInstance = hInstance; wc.lpszClassName = className; RegisterClassExA(&wc); HWND hwnd = CreateWindowExA(0, className, "Draw Window", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 800, 600, nullptr, nullptr, hInstance, nullptr ); ShowWindow(hwnd, SW_SHOW); UpdateWindow(hwnd); // ===== 2. 在主函数直接调用绘图函数 ===== srand(12); for(int i = 0; i < 10000; i++) { int x = rand() % 800; int y = rand() % 600; COLORREF color = RGB(rand()%256, rand()%256, rand()%256); DrawPoint(hwnd, x, y, color); } DrawLine(hwnd, 200, 200, 200, 400, RGB(0, 0, 0)); DrawLine(hwnd, 200, 400, 400, 300, RGB(255, 0, 0)); DrawLine(hwnd, 400, 300, 200, 200, RGB(0, 128, 255)); // ========== 3. 等待5秒 ===================== DWORD startTick = GetTickCount(); while (GetTickCount() - startTick < 5000) { MSG msg{}; if (PeekMessageA(&msg, nullptr, 0, 0, PM_REMOVE)) DispatchMessageA(&msg); } DestroyWindow(hwnd); // 4. 关闭窗口 return 0; }

面向对象版本

//编译运行生成task.json后，应检查是否在 // "${fileDirname}\\${fileBasenameNoExtension}.exe"之后添加了以下内容 // ,"-lgdi32", "-mwindows" #include <windows.h> #include <cstdlib> #include <string> class Paint { private: HWND hwnd; DWORD startTick; int waitTime; // 保存等待时长（毫秒） std::string className; // 静态窗口过程，处理基本消息 static LRESULT CALLBACK WndProcStatic(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) { if (msg == WM_DESTROY) { PostQuitMessage(0); return 0; } return DefWindowProcA(hwnd, msg, wParam, lParam); } // 内部辅助：注册窗口类 void RegisterWindowClass(HINSTANCE hInstance) { WNDCLASSEXA wc{}; wc.cbSize = sizeof(wc); wc.lpfnWndProc = WndProcStatic; wc.hInstance = hInstance; wc.lpszClassName = className.c_str(); wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); // 添加背景刷，避免闪烁 RegisterClassExA(&wc); } public: // 构造函数：初始化窗口 Paint(HINSTANCE hInstance, const char* title="Window", int width=800, int height=600) : hwnd(nullptr), startTick(0), waitTime(0), className("OOPPaintClass") { RegisterWindowClass(hInstance); hwnd = CreateWindowExA( 0, className.c_str(), title, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, width, height, nullptr, nullptr, hInstance, nullptr ); if (hwnd) { ShowWindow(hwnd, SW_SHOW); UpdateWindow(hwnd); } } // 成员函数：DrawPoint void DrawPoint(int x, int y, COLORREF color) { if (!hwnd) return; HDC hdc = GetDC(hwnd); SetPixel(hdc, x, y, color); ReleaseDC(hwnd, hdc); } // 成员函数：DrawLine void DrawLine(int x1, int y1, int x2, int y2, COLORREF color) { if (!hwnd) return; HDC hdc = GetDC(hwnd); HPEN pen = CreatePen(PS_SOLID, 1, color); HPEN oldPen = (HPEN)SelectObject(hdc, pen); MoveToEx(hdc, x1, y1, nullptr); LineTo(hdc, x2, y2); SelectObject(hdc, oldPen); DeleteObject(pen); ReleaseDC(hwnd, hdc); } // 成员函数：Wait // 接受外部传参的延时毫秒数，保存到 waitTime，并记录开始时间 void Wait(int ms) { waitTime = ms; startTick = GetTickCount(); } // 析构函数：等待指定时间后关闭窗口 ~Paint() { if (waitTime > 0) { // 延时循环，同时处理消息以保持窗口响应 while (GetTickCount() - startTick < (DWORD)waitTime) { MSG msg{}; // 使用 PM_REMOVE 取出消息并分发，防止界面无响应 if (PeekMessageA(&msg, nullptr, 0, 0, PM_REMOVE)) { DispatchMessageA(&msg); } } } if (hwnd) { DestroyWindow(hwnd); hwnd = nullptr; } } }; int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, int) { Paint obj1(hInstance, "Object 1: Points"); srand(12); for(int i = 0; i < 10000; i++) { int x = rand() % 800; int y = rand() % 600; COLORREF color = RGB(rand()%256, rand()%256, rand()%256); obj1.DrawPoint(x, y, color); } Paint obj2(hInstance, "Object 2: Lines"); obj2.DrawLine(200, 200, 200, 400, RGB(0, 0, 0)); obj2.DrawLine(200, 400, 400, 300, RGB(255, 0, 0)); obj2.DrawLine(400, 300, 200, 200, RGB(0, 128, 255)); obj1.Wait(3000); obj2.Wait(5000); return 0; }