initial commit

.gitignore

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+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+
+/.idea/
+/cmake-build-debug/
+/cmake-build-release/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.28)
+project(black_screen_app)
+
+set(CMAKE_CXX_STANDARD 23)
+set(CMAKE_GENERATOR_PLATFORM "Win32")
+
+if (MSVC)
+    set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} /O2 /Ob2 /Oi /Ot /Oy /GL /GS-")
+    set(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE} /LTCG")
+endif()
+
+add_executable(black_screen_app WIN32
+        src/app/main.cpp
+        src/app/WindowInitiator.cpp
+        src/app/WindowInitiator.hpp
+)

README.md

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+# Black Screen Application
+[![C++](https://img.shields.io/badge/C%2B%2B-23-blue.svg "C++ Standard")](https://en.cppreference.com/w/cpp/23)
+[![CMake](https://img.shields.io/badge/CMake-3.28-important.svg "CMake Version")](https://cmake.org/)
+
+[![Windows x86](https://img.shields.io/badge/Windows-x86-lightgrey?logo=windows)](https://www.microsoft.com/)
+[![Windows x64](https://img.shields.io/badge/Windows-x64-551a8b?logo=windows)](https://www.microsoft.com/)
+
+The Black Screen App is a simple yet effective tool designed to display a fully black screen on your Windows computer. Whether you're looking to save energy, eliminate distractions, or simply need a black backdrop, this app has you covered.
+
+## Features
+
+- **Full-Screen Blackout**: Fills your entire screen with pure black color.
+- **Compatibility**: Supports both 32-bit (x32) and 64-bit (x64) Windows versions.
+
+## Quick Start
+
+1. **Launch**: Double-click the app icon to run.
+2. **Exit**: Simply press any key to close the app and return to your desktop.
+
+## Acknowledgments
+
+- Thanks to all the contributors who have helped make this app better.
+- Special thanks to the community for the valuable feedback and support.
+
+---
+
+Enjoy the simplicity and utility of the Black Screen App!

src/app/WindowInitiator.cpp

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+//
+// Created by spoil on 04/14/2024.
+//
+
+#include "WindowInitiator.hpp"
+#include <windows.h>
+
+LRESULT CALLBACK HandleWindowMessages(HWND windowHandle, UINT messageType, WPARAM windowParameterValue, LPARAM messageData);
+
+void WindowInitiator::createWindow() {
+    const WNDCLASS windowClass = {
+        .lpfnWndProc = HandleWindowMessages,
+        .hInstance = GetModuleHandle(nullptr),
+        .lpszClassName = "BlackWindowClass"
+    };
+    RegisterClass(&windowClass);
+
+    const auto windowHandle = CreateWindowEx(
+        0,
+        "BlackWindowClass",
+        "Black Screen Application",
+        WS_POPUP | WS_VISIBLE,
+        CW_USEDEFAULT,
+        CW_USEDEFAULT,
+        GetSystemMetrics(SM_CXSCREEN),
+        GetSystemMetrics(SM_CYSCREEN),
+        nullptr,
+        nullptr,
+        GetModuleHandle(nullptr),
+        nullptr
+    );
+
+    ShowCursor(false);
+
+    ShowWindow(windowHandle, SW_SHOW);
+    UpdateWindow(windowHandle);
+
+    MSG message;
+    while (GetMessage(&message, nullptr, 0, 0)) {
+        TranslateMessage(&message);
+        DispatchMessage(&message);
+    }
+}
+
+LRESULT CALLBACK HandleWindowMessages(const HWND windowHandle, const UINT messageType, const WPARAM windowParameterValue, const LPARAM messageData) { // NOLINT(*-misplaced-const)
+    switch (messageType) {
+        case WM_CLOSE:
+        case WM_KEYDOWN:
+        case WM_DESTROY:
+            PostQuitMessage(0);
+            return 0;
+        case WM_ERASEBKGND: {
+            RECT clientRect;
+            GetClientRect(windowHandle, &clientRect);
+            FillRect(reinterpret_cast<HDC>(windowParameterValue), &clientRect, static_cast<HBRUSH>(GetStockObject(BLACK_BRUSH)));
+            return 1;
+        }
+        default:
+            return DefWindowProc(windowHandle, messageType, windowParameterValue, messageData);
+    }
+}
+

src/app/WindowInitiator.hpp

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+//
+// Created by spoil on 04/14/2024.
+//
+
+#ifndef WINDOWINITIATOR_HPP
+#define WINDOWINITIATOR_HPP
+
+
+class WindowInitiator {
+public:
+    static void createWindow();
+};
+
+
+#endif //WINDOWINITIATOR_HPP

src/app/main.cpp

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+#include <windows.h>
+#include "WindowInitiator.hpp"
+
+int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
+    WindowInitiator::createWindow();
+
+    return 0;
+}