What is hInstance?

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.

What is Wndclassex?

Contains window class information. It is used with the RegisterClassEx and GetClassInfoEx functions. WNDCLASSEX includes the cbSize member, which specifies the size of the structure, and the hIconSm member, which contains a handle to a small icon associated with the window class.

How do I find my Windows class name?

If you wish to find the name of the window class used by a particular window, use GetClassName() .

What is the use of the window class?

A window class is a set of attributes that the system uses as a template to create a window. Every window is a member of a window class. All window classes are process specific.

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).

What is mainCRTStartup?

mainCRTStartup() is the entrypoint of the C runtime library. It initializes the CRT, calls any static initializers that you wrote in your code, then calls your main() function. Clearly it is essential that both the CRT and your own initialization is performed first.

What is Lresult?

LRESULT is an integer value that your program returns to Windows. It contains your program’s response to a particular message. Additional data for the message is contained in the lParam and wParam parameters. Both parameters are integer values the size of a pointer width (32 bits or 64 bits).

What is created by window class in Java?

Class Window. A Window object is a top-level window with no borders and no menubar. The default layout for a window is BorderLayout . In a multi-screen environment, you can create a Window on a different screen device by constructing the Window with Window(Window, GraphicsConfiguration) .

What is window class name?

Each window class has an associated window procedure shared by all windows of the same class. When a process specifies a class name in the CreateWindow or CreateWindowEx function, the system creates a window with the window procedure, styles, and other attributes associated with that class name.

How do I find my windows 10 computer name?

Find your computer name in Windows 10

1. Open the Control Panel.
2. Click System and Security > System. On the View basic information about your computer page, see the Full computer name under the section Computer name, domain, and workgroup settings.

What is subclass of window?

Subclassing is a technique that allows an application to intercept and process messages sent or posted to a particular window before the window has a chance to process them. By subclassing a window, an application can augment, modify, or monitor the behavior of the window.

What is message loop in windows programming?

The message loop is an obligatory section of code in every program that uses a graphical user interface under Microsoft Windows. Windows programs that have a GUI are event-driven. Windows maintains an individual message queue for each thread that has created a window. This is the message loop.