[WINAPI] Window in D

[Mike Parker]

Daniel Wojdak wrote:
> My english is not good. Apologize for this.
> 
> I start programming in D and i have a problem.
> When I try make a window procedure and register class window. Compiler show error: 
> "Error: cannot implicitly convert expression (& WindowProcedure) of type intWindows function(HANDLE, uint, uint, int) function(HANDLE hwnd, uint message, uint wParam, int lParam) to intWindows function(HANDLE, uint, uint, int)"
> 
> Window Procedure:
> 
> "WNDPROC WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
> {
>      switch (message)
>      {
> 
>          case WM_DESTROY:
>              PostQuitMessage (0);
>              break;
>          default:
>              return cast(WNDPROC) DefWindowProcA (hwnd, message, wParam, lParam);
>      }
> 
>      return cast(WNDPROC) 0;
> }"
> 
> How must look window procedure in order to it's work?
> 

This should do the trick:

extern(Windows) int WindowProcedure (HWND hwnd, UINT message, WPARAM 
wParam, LPARAM lParam)