Как узнать lpClassName зная Hwnd ???

Как узнать lpClassName зная Hwnd ???

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Почитай вот это и применяй на здоровье !

GetClassName
The GetClassName function retrieves the name of the class to which the specified window belongs.

int GetClassName(
HWND hWnd, // handle of window
LPTSTR lpClassName, // address of buffer for class name
int nMaxCount // size of buffer, in characters
);

Parameters
hWnd
Handle to the window and, indirectly, the class to which the window belongs.
lpClassName
Pointer to the buffer that is to receive the class name string.
nMaxCount
Specifies the length, in characters, of the buffer pointed to by the lpClassName parameter. The class name string is truncated if it is longer than the buffer.
Return Values
If the function succeeds, the return value is the number of characters copied to the specified buffer.

If the function fails, the return value is zero. To get extended error information, callGetLastError.

QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
Import Library: Use user32.lib.
Unicode: Implemented as Unicode and ANSI versions on Windows NT.

See Also
Window Classes Overview, Window Class Functions, FindWindow, GetClassInfo, GetClassLong, GetClassWord

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