In a Win32 GUI application, which function serves as the application's entry…

Concept

A graphical Windows program must expose an entry routine that the runtime invokes when its process starts. Under the Win32 convention, a GUI-subsystem program uses a dedicated entry-point signature rather than the console program's main function.

Application

1. Compare each offered name with documented Win32 terminology.

2. WinMain is the Win32 GUI entry function. Its parameters provide the application-instance handle, a legacy previous-instance value, the command line, and the initial show state.

3. After control reaches WinMain, a typical program registers a window class, creates its window, and processes the message loop.

Cross-check and contrast

• WinAPI denotes the overall Windows programming interface, not a single function name.

• WinApp and WinVoid are not documented Win32 entry-point identifiers.

Therefore, the function named WinMain serves as the entry point for a Win32 GUI application.