Because Windows 1.0 was an "operating environment," it came bundled with several built-in programs designed to prove that a GUI could be productive. These inaugural applications included:
break; default: return DefWindowProc(hwnd, msg, wParam, lParam); first windows program
// Window procedure function LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) Because Windows 1
return msg.wParam;
Microsoft Windows 1.0 was announced in 1983 but released in November 1985. Before any third-party applications existed, Microsoft had to develop internal tools and demos to test the new graphical environment, which ran as a shell on top of MS-DOS. default: return DefWindowProc(hwnd
: The WndProc function is a callback function that handles messages for our window. It takes four parameters: