diretx 基本用法！

// DEMO6_1.CPP basic DirectDraw initialization demo// INCLUDES ///////////////////////////////////////////////#define WIN32_LEAN_AND_MEAN // just say no to MFC#define INITGUID // make sure directX guids are included#include <windows.h> // include important windows stuff#include <windowsx.h> #include <mmsystem.h>//#include <iostream.h> // include important C/C++ stuff#include <conio.h>#include <stdlib.h>#include <malloc.h>#include <memory.h>#include <string.h>#include <stdarg.h>#include <stdio.h> #include <math.h>#include <io.h>#include <fcntl.h>#include <ddraw.h> // include directdraw#pragma comment(lib,"ddraw.lib")// DEFINES ////////////////////////////////////////////////// defines for windows #define WINDOW_CLASS_NAME "WINCLASS1"// default screen size#define SCREEN_WIDTH 640 // size of screen#define SCREEN_HEIGHT 480#define SCREEN_BPP 8 // bits per pixel#define MAX_COLORS 256 // maximum colors// TYPES //////////////////////////////////////////////////////// basic unsigned typestypedef unsigned short USHORT;typedef unsigned short WORD;typedef unsigned char UCHAR;typedef unsigned char BYTE;// MACROS /////////////////////////////////////////////////#define KEYDOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0)#define KEYUP(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1)// initializes a direct draw struct#define DD_INIT_STRUCT(ddstruct) { memset(&ddstruct,0,sizeof(ddstruct)); ddstruct.dwSize=sizeof(ddstruct); }// GLOBALS ////////////////////////////////////////////////HWND main_window_handle = NULL; // globally track main windowHINSTANCE hinstance_app = NULL; // globally track hinstance// directdraw stuffLPDIRECTDRAW7 lpdd = NULL; // dd objectLPDIRECTDRAWSURFACE7 lpddsprimary = NULL; // dd primary surfaceLPDIRECTDRAWSURFACE7 lpddsback = NULL; // dd back surfaceLPDIRECTDRAWPALETTE lpddpal = NULL; // a pointer to the created dd paletteLPDIRECTDRAWCLIPPER lpddclipper = NULL; // dd clipperPALETTEENTRY palette[256]; // color palettePALETTEENTRY save_palette[256]; // used to save palettesDDSURFACEDESC2 ddsd; // a direct draw surface description structDDBLTFX ddbltfx; // used to fillDDSCAPS2 ddscaps; // a direct draw surface capabilities structHRESULT ddrval; // result back from dd callsDWORD start_clock_count = 0; // used for timing// these defined the general clipping rectangleint min_clip_x = 0, // clipping rectangle max_clip_x = SCREEN_WIDTH-1,min_clip_y = 0,max_clip_y = SCREEN_HEIGHT-1;// these are overwritten globally by DD_Init()int screen_width = SCREEN_WIDTH, // width of screenscreen_height = SCREEN_HEIGHT, // height of screenscreen_bpp = SCREEN_BPP; // bits per pixelchar buffer[80]; // general printing buffer// FUNCTIONS //////////////////////////////////////////////LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam){// this is the main message handler of the systemPAINTSTRUCTps;// used in WM_PAINTHDChdc;// handle to a device contextchar buffer[80]; // used to print strings// what is the message switch(msg){case WM_CREATE: {// do initialization stuff here// return successreturn(0);} break;case WM_PAINT: {// simply validate the window hdc = BeginPaint(hwnd,&ps); // end paintingEndPaint(hwnd,&ps);// return successreturn(0);} break;case WM_DESTROY: {// kill the application, this sends a WM_QUIT message PostQuitMessage(0);// return successreturn(0);} break;default:break;} // end switch// process any messages that we didn't take care of return (DefWindowProc(hwnd, msg, wparam, lparam));} // end WinProc///////////////////////////////////////////////////////////int Game_Main(void *parms = NULL, int num_parms = 0){// this is the main loop of the game, do all your processing// here// for now test if user is hitting ESC and send WM_CLOSEif (KEYDOWN(VK_ESCAPE))SendMessage(main_window_handle,WM_CLOSE,0,0);// return success or failure or your own return code herereturn(1);} // end Game_Main////////////////////////////////////////////////////////////int Game_Init(void *parms = NULL, int num_parms = 0){// this is called once after the initial window is created and// before the main event loop is entered, do all your initialization// here// create IDirectDraw interface 7.0 object and test for errorif (FAILED(DirectDrawCreateEx(NULL, (void **)&lpdd, IID_IDirectDraw7, NULL)))return(0);// set cooperation to normal since this will be a windowed applpdd->SetCooperativeLevel(main_window_handle, DDSCL_NORMAL);// return success or failure or your own return code herereturn(1);} // end Game_Init/////////////////////////////////////////////////////////////int Game_Shutdown(void *parms = NULL, int num_parms = 0){// this is called after the game is exited and the main event// loop while is exited, do all you cleanup and shutdown here// simply blow away the IDirectDraw4 interfaceif (lpdd){lpdd->Release();lpdd = NULL;} // end if// return success or failure or your own return code herereturn(1);} // end Game_Shutdown// WINMAIN ////////////////////////////////////////////////int WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hprevinstance, LPSTR lpcmdline, int ncmdshow){WNDCLASSEX winclass; // this will hold the class we createHWND hwnd; // generic window handleMSG msg; // generic messageHDC hdc; // graphics device context// first fill in the window class stucturewinclass.cbSize = sizeof(WNDCLASSEX);winclass.style= CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;winclass.lpfnWndProc= WindowProc;winclass.cbClsExtra= 0;winclass.cbWndExtra= 0;winclass.hInstance= hinstance;winclass.hIcon= LoadIcon(NULL, IDI_APPLICATION);winclass.hCursor= LoadCursor(NULL, IDC_ARROW); winclass.hbrBackground= (HBRUSH)GetStockObject(BLACK_BRUSH);winclass.lpszMenuName= NULL;winclass.lpszClassName= WINDOW_CLASS_NAME;winclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION);// save hinstance in globalhinstance_app = hinstance;// register the window classif (!RegisterClassEx(&winclass))return(0);// create the windowif (!(hwnd = CreateWindowEx(NULL, // extended styleWINDOW_CLASS_NAME, // class"DirectDraw Initialization Demo", // titleWS_OVERLAPPEDWINDOW | WS_VISIBLE,0,0, // initial x,y400,300, // initial width, heightNULL, // handle to parent NULL, // handle to menuhinstance,// instance of this applicationNULL)))// extra creation parmsreturn(0);// save main window handlemain_window_handle = hwnd;// initialize game hereGame_Init();// enter main event loopwhile(TRUE){// test if there is a message in queue, if so get itif (PeekMessage(&msg,NULL,0,0,PM_REMOVE)){ // test if this is a quitif (msg.message == WM_QUIT)break;// translate any accelerator keysTranslateMessage(&msg);// send the message to the window procDispatchMessage(&msg);} // end if// main game processing goes hereGame_Main();} // end while// closedown game hereGame_Shutdown();// return to Windows like thisreturn(msg.wParam);} // end WinMain///////////////////////////////////////////////////////////