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4/8/2010

This function retrieves information about a window class.

Syntax 

BOOL GetClassInfo( 
  HINSTANCE 
hInstance, 
  LPCTSTR 
lpClassName, 
  LPWNDCLASS 
lpWndClass
);

Parameters

hInstance

Handle to the instance of the application that created the class. To retrieve information about classes defined by the system (such as buttons or list boxes), set this parameter to NULL.

lpClassName

Long pointer to a null-terminated string that contains the class name. The name must be that of a preregistered class or a class registered by a previous call to the RegisterClassfunction. Alternatively, this parameter can be an atom. If so, it must be a class atom created by a previous call to the RegisterClassfunction. The atom must be in the low-order word of lpClassName; the high-order word must be zero.

lpWndClass

Long pointer to a WNDCLASSstructure that receives the information about the class.

Return Value

Nonzero indicates that the function finds a matching class and successfully copies the data. Zero indicates failure. To get extended error information, call GetLastError.

Remarks

If lpClassNameis an atom, it must be an atom returned from RegisterClass.

Requirements

Header winuser.h
Windows Embedded CE Windows CE 1.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also