# include <stdio.h>
# include <windows.h>
# include <ddraw.h>
# include <dsound.h>
# include "ddutil.h"
# include "dsutil.h"
# include "resource.h"

const int ultris_nettobreite = 360;  // Breite des Inneren des Haupfensters
const int ultris_nettohoehe  = 520;  // Hoehe des Inneren des Hauptfensters
int ultris_bruttobreite;             // Breite des gesamten Haupfensters (incl. Rahmen)
int ultris_bruttohoehe;              // Hoehe des gesamten Haupfensters (incl. Rahmen)

HINSTANCE ultris_instance;           // Instanz der Ultris Applikation
HWND ultris_window;                  // Das Hauptfenster von Ultris
HMENU ultris_menu;                   // Das Menu von Ultris

/*
** ultris_windowhandler
*/
LRESULT CALLBACK ultris_windowhandler( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
	{
	switch(msg)
		{
	case WM_COMMAND:
		switch( LOWORD( wParam))
			{
		case IDM_EXIT:
            PostMessage( hWnd, WM_CLOSE, 0, 0);
			return 0;
			}
		break;
	case WM_GETMINMAXINFO:
		((MINMAXINFO *)lParam)->ptMinTrackSize.x = ((MINMAXINFO *)lParam)->ptMaxTrackSize.x = ultris_bruttobreite;
		((MINMAXINFO *)lParam)->ptMinTrackSize.y = ((MINMAXINFO *)lParam)->ptMaxTrackSize.y = ultris_bruttohoehe;
		return 0;
	case WM_DESTROY:
		PostQuitMessage( 0);
		return 0;
		}
    return DefWindowProc(hWnd, msg, wParam, lParam);
	}

/*
** WinMain
*/
int APIENTRY WinMain( HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR pCmdLine, int nCmdShow)
	{
    MSG msg;
    HACCEL acc;
    WNDCLASSEX wcx;

	ultris_instance = hInst;

    wcx.cbSize        = sizeof( wcx);
    wcx.lpszClassName = TEXT( "Ultris");
    wcx.lpfnWndProc   = ultris_windowhandler;
    wcx.style         = CS_VREDRAW | CS_HREDRAW;
    wcx.hInstance     = hInst;
    wcx.hIcon         = LoadIcon( hInst, MAKEINTRESOURCE( IDI_MAIN));
    wcx.hIconSm       = LoadIcon( hInst, MAKEINTRESOURCE( IDI_MAIN));
    wcx.hCursor       = LoadCursor( NULL, IDC_ARROW);
    wcx.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
    wcx.lpszMenuName  = MAKEINTRESOURCE( IDR_MENU);
    wcx.cbClsExtra    = 0;
    wcx.cbWndExtra    = 0;

    if( !RegisterClassEx( &wcx))
        return 0;

    acc = LoadAccelerators( hInst, MAKEINTRESOURCE(IDR_ACCEL));

	ultris_bruttohoehe = ultris_nettohoehe + 2*GetSystemMetrics( SM_CYSIZEFRAME) 
		                                   + GetSystemMetrics( SM_CYMENU)
							               + GetSystemMetrics( SM_CYCAPTION);
	ultris_bruttobreite = ultris_nettobreite + 2*GetSystemMetrics( SM_CXSIZEFRAME);

    ultris_window = CreateWindowEx( 0, TEXT( "Ultris"), TEXT( "Ultris"), WS_OVERLAPPEDWINDOW & ~WS_MAXIMIZEBOX, 
		                                           CW_USEDEFAULT, CW_USEDEFAULT,
  	                                               ultris_bruttobreite, ultris_bruttohoehe, NULL, NULL, hInst, NULL);
    if( !ultris_window)
    	return 0;

	ultris_menu = GetMenu( ultris_window);

	MoveWindow( ultris_window, (GetSystemMetrics(SM_CXSCREEN)-ultris_bruttobreite)/2,
		                       (GetSystemMetrics(SM_CYSCREEN)-ultris_bruttohoehe)/2, 
							                                        ultris_bruttobreite, ultris_bruttohoehe, TRUE);

    ShowWindow( ultris_window, nCmdShow);

    while( TRUE)
		{
        if( PeekMessage( &msg, NULL, 0, 0, PM_NOREMOVE))
			{
            if( GetMessage( &msg, NULL, 0, 0 ) == 0)
                return 0; // Message ist WM_QUIT

             if( TranslateAccelerator( ultris_window, acc, &msg) == 0)
				{
                TranslateMessage( &msg); 
                DispatchMessage( &msg);
				}
			}
		else
			{
			// Hier koennen wir uns um das Spiel kuemmern
			}
		}
	}