What is #ifdef Win32?

What is #ifdef Win32?

The #ifdef directive controls conditional compilation of the resource file by checking the specified name. If the name has not been defined, #ifdef directs the compiler to skip all statements up to the next #endif directive.

What is Win32 APIs?

Alternatively referred to as the Windows API and WinAPI, Win32 is the main set of Microsoft Windows APIs used for developing 32-bit applications. Windows User Interface – Create and manage a user interface, such as display output, prompt for user input, and support for user interaction.

What is hInstance?

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. The instance handle is needed for certain Windows functions—for example, to load icons or bitmaps.

Is _WIN32 defined for x64?

_WIN32 Defined as 1 when the compilation target is 32-bit ARM, 64-bit ARM, x86, or x64. Otherwise, undefined.

What is the difference between #ifdef and #ifndef?

The #ifdef identifier statement is equivalent to #if 1 when identifier has been defined. It’s equivalent to #if 0 when identifier hasn’t been defined, or has been undefined by the #undef directive. The #ifndef directive checks for the opposite of the condition checked by #ifdef .

What is the difference between #ifdef and #if defined?

The difference between the two is that #ifdef can only use a single condition, while #if defined(NAME) can do compound conditionals.

Is Win32 API still used?

The majority of legacy Windows applications that exist in the wild today still use Win32 in some form. Over the years, Microsoft has adopted it internally for the development of Office 365, Skype, and other applications. That was 16 years ago. However, Win32 still is the predominant legacy programming API.

Is Win32 API written in C?

WinAPI (also known as Win32; officially called the Microsoft Windows API) is an application programming interface written in C by Microsoft to allow access to Windows features.

Should I use WinMain or wWinMain?

The only difference between WinMain and wWinMain is the command line string and you should use wWinMain in Unicode applications (and all applications created these days should use Unicode).

How is WinMain called?

WinMain() is a function which is called by the operating system during creation of a process. First argument is the instance handle of the current application process. Next argument is the handle of the previous instance (used in Win16 programs, no longer used in Win32).

Where is Msc_ver defined?

_MSC_VER is only defined when compiling with the Visual Studio C++ compiler. If you use any other compiler it will not be defined. Yes, it compiling with the Visual Studio C++ compiler but enviroument not use any windows librares like Windows.

What is __ func __?

(C++11) The predefined identifier __func__ is implicitly defined as a string that contains the unqualified and unadorned name of the enclosing function. __func__ is mandated by the C++ standard and is not a Microsoft extension.