DlgProc typedef Null safety

IntPtr DlgProc (
  1. IntPtr,
  2. Uint32,
  3. IntPtr,
  4. IntPtr
)

Application-defined callback function used with the CreateDialog and DialogBox families of functions. It processes messages sent to a modal or modeless dialog box.

Implementation

typedef DlgProc = IntPtr Function(IntPtr, Uint32, IntPtr, IntPtr);