www.pudn.com > CDX.rar > ex12.cpp

// ------------------------------------------------------------------------------------------ 
// CDX example 12 - CDXMenu example 
// You must link to cdx.lib, ddraw.lib, dinput and dxguid 
// ------------------------------------------------------------------------------------------ 
 
#include  
#include  
#include  
 
#define CDXINCLUDEALL           // include all CDX headers 
#include  
#include "CDXMenu.h" 
 
#define NAME		"CDXExample12" 
#define TITLE		"CDX Example 12" 
 
#define MENU_ITEM_HEIGHT		48	// height of each menu item and spacing between items 
 
CDXScreen   * Screen        = 0;	// The screen object, every program must have one 
CDXMenu     * MainMenu      = 0; 
CDXMenu     * OptionsMenu   = 0;	// main and options menu. options menu is a child of main 
CDXMenu     * CurrentMenu   = 0;	// pointer to the current menu to display 
 
BOOL        bActive         = TRUE;  // Is the program running? 
 
 
// ------------------------------------------------------------------------------------------ 
// FiniApp - Destroy the CDX objects 
// ------------------------------------------------------------------------------------------ 
void FiniApp(void) 
{ 
	SAFEDELETE( OptionsMenu ); 
	SAFEDELETE( MainMenu ); 
	SAFEDELETE( Screen ); 
} 
 
 
 
// ------------------------------------------------------------------------------------------ 
// WinProc 
// ------------------------------------------------------------------------------------------ 
long PASCAL WinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) 
{ 
	switch(message) 
	{ 
		case WM_ACTIVATEAPP: 
			bActive = wParam; 
		break; 
 
		case WM_KEYDOWN: 
			switch(wParam) 
			{ 
				case VK_HOME: 
					CurrentMenu->Home(); 
				break; 
 
				case VK_END: 
					CurrentMenu->End(); 
				break; 
 
				case VK_UP: 
					CurrentMenu->Up(); 
				break; 
 
				case VK_DOWN: 
					CurrentMenu->Down(); 
				break; 
 
				case VK_ESCAPE: 
					PostMessage(hWnd, WM_CLOSE, 0, 0); 
				break; 
 
				case VK_RETURN: 
					switch(CurrentMenu->Enter()) { 
						case 2: 
							if(CurrentMenu == OptionsMenu) { 
								CurrentMenu = MainMenu; 
							} 
							else { 
								CurrentMenu = OptionsMenu; 
							} 
						break; 
 
						case 3: 
							if(CurrentMenu == MainMenu) { 
								PostMessage(hWnd, WM_CLOSE, 0, 0); 
							} 
						break; 
					} 
					break; 
			} 
		break; 
 
		case WM_DESTROY: 
			FiniApp(); 
			PostQuitMessage(0); 
		break; 
	} 
 
	return DefWindowProc(hWnd, message, wParam, lParam); 
} 
 
 
 
// ------------------------------------------------------------------------------------------ 
// InitApp - Create the window and the CDX objects 
// ------------------------------------------------------------------------------------------ 
BOOL InitApp(HINSTANCE hInst, int nCmdShow) 
{ 
	HWND        hWnd; 
	WNDCLASS    WndClass; 
 
	WndClass.style = CS_HREDRAW | CS_VREDRAW; 
	WndClass.lpfnWndProc = WinProc; 
	WndClass.cbClsExtra = 0; 
	WndClass.cbWndExtra = 0; 
	WndClass.hInstance = hInst; 
	WndClass.hIcon = LoadIcon(0, IDI_APPLICATION); 
	WndClass.hCursor = LoadCursor(0, IDC_ARROW); 
	WndClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); 
	WndClass.lpszMenuName = 0; 
	WndClass.lpszClassName = NAME; 
	RegisterClass(&WndClass); 
 
    // create the main window 
	hWnd = CreateWindowEx( 
		WS_EX_TOPMOST, 
		NAME, 
		TITLE, 
		WS_POPUP, 
		0,0, 
		GetSystemMetrics(SM_CXSCREEN), 
		GetSystemMetrics(SM_CYSCREEN), 
		NULL, 
		NULL, 
		hInst, 
		NULL); 
 
    // when hWnd = -1 there was an error creating the main window 
    // CDXError needs a CDXScreen object, if there is none at this early 
    // program stage, pass it NULL 
	if(!hWnd)  
        CDXError( NULL , "could not create the main window" ); 
 
    // show the main window 
	ShowWindow(hWnd, nCmdShow); 
	UpdateWindow(hWnd); 
 
	// Create the CDXSreen object 
	Screen = new CDXScreen(); 
 
    // set the video mode 800x600x8 
    if( FAILED(Screen->CreateFullScreen( hWnd , 800 , 600 , 8 ) ) ) 
        CDXError( Screen , "could not set video mode 800x600x8" ); 
 
	// Create the CDXMenu objects in reverse order (children first) 
	OptionsMenu = new CDXMenu(); 
	OptionsMenu->Create(Screen->GetBack(), MENU_ITEM_HEIGHT); 
 
	// Don't wrap this menu 
	OptionsMenu->SetWrap(FALSE); 
 
	// Set the title of the menu to yellow 
	OptionsMenu->SetTitle("Options", RGB(255, 255, 0)); 
	Screen->GetBack()->ChangeFont("Verdana", 0, MENU_ITEM_HEIGHT, FW_BOLD); 
 
	// Add some options to the menu 
	OptionsMenu->AddItem("Display", RGB(255, 255, 255), RGB(0, 0, 255)); 
	OptionsMenu->AddItem("Sound", RGB(255, 255, 255), RGB(0, 0, 255)); 
	OptionsMenu->AddItem("Quit", RGB(255, 255, 255), RGB(0, 0, 255)); 
 
	// Create the main menu 
	MainMenu = new CDXMenu(); 
	MainMenu->Create(Screen->GetBack(), MENU_ITEM_HEIGHT); 
 
	// Set the title of the menu to yellow 
	MainMenu->SetTitle("Main Menu", RGB(255, 255, 0)); 
 
	// Set the font for the menu 
	Screen->GetBack()->ChangeFont("Verdana", 0, MENU_ITEM_HEIGHT, FW_BOLD); 
 
	// Add some options to the menu 
	MainMenu->AddItem("Single Player", RGB(255, 255, 255), RGB(0, 0, 255)); 
	MainMenu->AddItem("Multiplayer", RGB(255, 255, 255), RGB(0, 0, 255)); 
	MainMenu->AddItem("Options", RGB(255, 255, 255), RGB(0, 0, 255)); 
	MainMenu->AddItem("Quit", RGB(255, 255, 255), RGB(0, 0, 255)); 
 
	CurrentMenu = MainMenu; 
	 
	return TRUE; 
} 
 
 
 
// ------------------------------------------------------------------------------------------ 
// WinMain 
// ------------------------------------------------------------------------------------------ 
int PASCAL WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpCmdLine, int nCmdShow) 
{ 
	MSG msg; 
 
	if(!InitApp(hInst, nCmdShow)) 
        CDXError( NULL , "could not initialize CDX application" ); 
 
	while(1) 
	{ 
		if(PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) 
		{ 
			if(!GetMessage(&msg, NULL, 0, 0 )) return msg.wParam; 
			TranslateMessage(&msg);  
			DispatchMessage(&msg); 
		} 
		else if(bActive) 
		{ 
            // clear screen 
			Screen->GetBack()->Fill(0); 
 
            // draw menu 
			CurrentMenu->Draw(300, 150); 
 
            // display back buffer 
			Screen->Flip(); 
		} 
		else WaitMessage(); 
	} 
}