The UnregisterClass function removes a window class, freeing the memory required for the class.
BOOL UnregisterClass(
LPCTSTR lpClassName, |
// address of class name string |
HINSTANCE hInstance |
// handle of application instance |
); |
If this parameter is an integer atom, it must be a global atom created by a
previous call to the RegisterClass 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.
If the function succeeds, the return value is nonzero.
If the class could not be found or if a window still exists that was created with the class, the return value is zero. To get extended error information, call GetLastError.
Before calling this function, an application must destroy all windows created with the specified class.
All window classes that an application registers are unregistered when it terminates.
file: /Techref/os/win/api/win32/func/src/f89_17.htm, 2KB, , updated: 2000/4/7 12:19, local time: 2024/9/2 05:02,
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