Zarathustra wrote:
> Don Wrote:
>> It isn't. Tfunc2 is a function pointer, which is typically the same as size_t. So any int can be stored inside it. It's generally a very bad idea to do so, of course.
> 
> Never mind what is stored inside func2. 0x00 is only to simplify the code.
> Tfunc1 - pointer to function without args
> Tfunc2 - pointer to function with 1 arg
> so:
> func2 = cast(Tfunc1)something; doesn't have a sense, because type of func2 is Tfunc2 type not Tfunc1!

Ah, I misread it.

> In D1 this causes compilation error, but DMD2.035 doesn't generate any compilation message, even warning.

Clearly a bug. Please put it into Bugzilla.

I resolved my access violation problem by including at the begin of wndProc inside Window class, the following code:
//____________________________________________________
  private dword wndProc(ptr o_hwnd, dword o_msg, ...
  {
    asm{
      push 0x00000000;
      push [o_hwnd];
      call [user32.getWindowLong];
      mov  [EBP - 0x04], EAX;
    }

    switch(o_msg){
      ...
  }
//____________________________________________________