CFHookProc typedef Null safety

CFHookProc = UINT_PTR Function(HWND, UINT, WPARAM, LPARAM)

Application-defined callback function used with the ChooseFont function. Receives messages or notifications intended for the default dialog box procedure of the Font dialog box.

Implementation

typedef CFHookProc = UINT_PTR Function(HWND, UINT, WPARAM, LPARAM);