Top-Down Structs

[Bob W]

After using some Win32 declarations, wich are
obviously not part of "std.c.windows.windows",
I have noticed that a resulting program crashes with

    "Error: Win32 Exception" .

This happens if the main structure ("INPUT_RECORD")
is declared before the other structures contained in
the main structure. The problem will not arise if
sub-structs [B] are declared earlier than the main
struct [A].

Before that incident I was convinced that the
D compiler would handle "top-down" declarations
correctly.



----- "Problematic" declaration sequence: -----


// INPUT_RECORD [A]

struct INPUT_RECORD {
  WORD EventType;
  union {
    KEY_EVENT_RECORD KeyEvent;
    MOUSE_EVENT_RECORD MouseEvent;
    WINDOW_BUFFER_SIZE_RECORD WindowBufferSizeEvent;
    MENU_EVENT_RECORD MenuEvent;
    FOCUS_EVENT_RECORD FocusEvent;
} }


// Structs contained in INPUT_RECORD [B]

struct KEY_EVENT_RECORD {
  BOOL bKeyDown;
  WORD wRepeatCount;
  WORD wVirtualKeyCode;
  WORD wVirtualScanCode;
  union  {  WCHAR UnicodeChar;  CHAR AsciiChar;  }
  DWORD dwControlKeyState;
}

struct MOUSE_EVENT_RECORD {
  COORD dwMousePosition;
  DWORD dwButtonState;
  DWORD dwControlKeyState;
  DWORD dwEventFlags;
}

struct WINDOW_BUFFER_SIZE_RECORD { COORD dwSize; }
struct MENU_EVENT_RECORD { UINT dwCommandId; }
struct FOCUS_EVENT_RECORD { BOOL bSetFocus; }