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GetClassName function

Retrieves the name of the class to which the specified window belongs.

Syntax


int WINAPI GetClassName(
  _In_  HWND   hWnd,
  _Out_ LPTSTR lpClassName,
  _In_  int    nMaxCount
);

Parameters

hWnd [in]

Type: HWND

A handle to the window and, indirectly, the class to which the window belongs.

lpClassName [out]

Type: LPTSTR

The class name string.

nMaxCount [in]

Type: int

The length of the lpClassName buffer, in characters. The buffer must be large enough to include the terminating null character; otherwise, the class name string is truncated to nMaxCount-1 characters.

Return value

Type:

Type: int

If the function succeeds, the return value is the number of characters copied to the buffer, not including the terminating null character.

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

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Winuser.h (include Windows.h)

Library

User32.lib

DLL

User32.dll

Unicode and ANSI names

GetClassNameW (Unicode) and GetClassNameA (ANSI)

See also

Reference
FindWindow
GetClassInfo
GetClassLong
GetClassWord
Conceptual
Window Classes

 

 

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