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The GetClassInfo function retrieves information about a window class.
The GetClassInfo function has been superseded by the GetClassInfoEx
function. You can still use GetClassInfo, however, if you do not need
information about the class small icon.
BOOL GetClassInfo(
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HINSTANCE hInstance,
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// handle of application instance
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LPCTSTR lpClassName,
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// address of class name string
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LPWNDCLASS lpWndClass
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// address of structure for class data
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);
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Parameters
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hInstance
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Identifies the instance of the application that created the class. To retrieve
information about classes defined by Windows (such as buttons or list boxes),
set this parameter to NULL.
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lpClassName
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Points to a null-terminated string containing the class name. The name must be
that of a preregistered class or a class registered by a previous call to the RegisterClass
function. Alternatively, this parameter can be an integer atom. If so, it must
be a global atom created by a previous call to the GlobalAddAtom
function. The atom, a 16-bit value less than 0xC000, must be in the low-order
word of lpClassName; the high-order word must be zero.
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lpWndClass
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Points to a WNDCLASS structure that
receives the information about the class.
Return Values
If the function finds a matching class and successfully copies the data, the
return value is nonzero.
If the function fails, the return value is zero. To get extended error
information, call GetLastError.
See Also
GetClassInfoEx, GetClassLong,
GetClassName, GetClassWord,
GlobalAddAtom, RegisterClass,
WNDCLASS