What is WinMain in C?

WinMain() is the C entry point function of any windows application. Like normal DOS/console based application which has main() function as C entry point, in windows we have WinMain() instead. WinMain() is a function which is called by system during creation of a process.

Which is the entry point of Windows application?

All 32-bit Windows operating system applications use the calling convention WINAPI. This calling convention MUST be used to distinguish the function as the entry point. Now for the parameters.

What is the difference between WinMain and wWinMain?

The WinMain function is identical to wWinMain, except the command-line arguments are passed as an ANSI string. The Unicode version is preferred. You can use the ANSI WinMain function even if you compile your program as Unicode. This function returns all of the arguments in a single string.

What does WinMain mean?

WinMain is the conventional name used for the application entry point.

What’s the difference between WinMain and main in C?

What actually happens is that the Microsoft C runtime library (CRT) provides an implementation of main that calls either WinMain or wWinMain. The CRT does some additional work inside main. For example, any static initializers are called before wWinMain.

What are the parameters of WinMain in C + +?

WinMain takes 4 parameters that are passed to the program by Win O/S at start up: int WINAPI WinMain( HINSTANCE hInstance, // HANDLE TO AN INSTANCE. This is the “handle” to YOUR PROGRAM ITSELF.

Which is the return type of WinMain in Windows?

Here’s the prototype for WinMain: int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd); As you may have already noticed, the return type for WinMain is, and always will be, int. All 32-bit Windows operating system applications use the calling convention WINAPI.

What is the entry point of WinMain function?

Every Windows program includes an entry-point function that is named either WinMain or wWinMain. Here is the signature for wWinMain. The four parameters are: hInstance is something called a “handle to an instance” or “handle to a module.” The operating system uses this value to identify the executable (EXE) when it is loaded in memory.