//

// VC，DirectX8开发实例（画面的清除和描画）

// IDirect3DDevice8::Clear()函数使用

#include <windows.h>

#include <d3d8.h>

#define TITLE  TEXT("Kitty on your lap")

IDirect3D8 * pDirect3D;

IDirect3DDevice8 * pD3Device;

D3DPRESENT_PARAMETERS d3dpp;

LRESULT CALLBACK WndProc(HWND hWnd , UINT msg , WPARAM wp , LPARAM lp) {

        switch (msg) {

        case WM_DESTROY:

               PostQuitMessage(0);

               return 0;

        case WM_PAINT:

               if (!pD3Device) break;

               pD3Device->Clear(0 , 

                       NULL , //Clear全体

                       D3DCLEAR_TARGET ,//指定Clear对象，blankの色にする

                       D3DCOLOR_XRGB(0 , 0 , 0) ,//清楚后显示的颜色

                       1.0 , //Z值，0.0 ～ 1.0 までの深度バッファに保存する

                       0);   //指定为各StencilBuffer的报名保存的整数价值，

                            //0 ～ 2n - 1 までの

               //IDirect3DDevice8::Present()

               pD3Device->Present(NULL,// 全体が対象となります

                                  NULL,//

                                  NULL,//

                                  NULL);//

               ValidateRect(hWnd , NULL);

               return 0;

        }

        return DefWindowProc(hWnd , msg , wp , lp);

}

int WINAPI WinMain(HINSTANCE hInstance , HINSTANCE hPrevInstance ,

                       PSTR lpCmdLine , int nCmdShow) {

        MSG msg;

        HWND hWnd;

        WNDCLASS winc;

        D3DDISPLAYMODE d3ddm;

        pDirect3D = Direct3DCreate8(D3D_SDK_VERSION);

        pDirect3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT , &d3ddm);

        ZeroMemory(&d3dpp , sizeof(D3DPRESENT_PARAMETERS));

        d3dpp.BackBufferFormat = d3ddm.Format;

        d3dpp.BackBufferCount = 1;

        d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;

        d3dpp.Windowed = TRUE;

        winc.style             = CS_HREDRAW | CS_VREDRAW;

        winc.lpfnWndProc       = WndProc;

        winc.cbClsExtra        = winc.cbWndExtra = 0;

        winc.hInstance         = hInstance;

        winc.hIcon             = LoadIcon(NULL , IDI_APPLICATION);

        winc.hCursor           = LoadCursor(NULL , IDC_ARROW);

        winc.hbrBackground     = (HBRUSH)GetStockObject(WHITE_BRUSH);

        winc.lpszMenuName      = NULL;

        winc.lpszClassName     = TEXT("KITTY");

        if (!RegisterClass(&winc)) return 0;

        hWnd = CreateWindow(

               TEXT("KITTY") , TITLE , WS_OVERLAPPEDWINDOW | WS_VISIBLE ,

               CW_USEDEFAULT , CW_USEDEFAULT , CW_USEDEFAULT , CW_USEDEFAULT ,

               NULL , NULL , hInstance , NULL

        );

        if (!hWnd) return 0;

        pDirect3D->CreateDevice(

               D3DADAPTER_DEFAULT , D3DDEVTYPE_HAL , hWnd ,

               D3DCREATE_SOFTWARE_VERTEXPROCESSING , &d3dpp , &pD3Device

        );

        while (GetMessage(&msg , NULL , 0 , 0 )) {

               TranslateMessage(&msg);

               DispatchMessage(&msg);

        }

        pDirect3D->Release();

        pD3Device->Release();

        return msg.wParam;

}

//

//IDirect3DDevice8::Reset()方法使用

//

#include <windows.h>

#include <d3d8.h>

#define TITLE  TEXT("Kitty on your lap")

IDirect3D8 * pDirect3D;

IDirect3DDevice8 * pD3Device;

D3DPRESENT_PARAMETERS d3dpp;

LRESULT CALLBACK WndProc(HWND hWnd , UINT msg , WPARAM wp , LPARAM lp) {

        switch (msg) {

        case WM_DESTROY:

               PostQuitMessage(0);

               return 0;

        case WM_PAINT:

               if (!pD3Device) break;

               pD3Device->Clear(0 , NULL , D3DCLEAR_TARGET ,

                       D3DCOLOR_XRGB(0 , 0 , 0) , 1.0 , 0);

               pD3Device->Present(NULL,NULL,NULL,NULL);

               ValidateRect(hWnd , NULL);

               return 0;

        case WM_SIZE://如果窗体大小发生变化，执行此事件

               if (!pD3Device) return 0;

               d3dpp.BackBufferWidth = LOWORD(lp);

               d3dpp.BackBufferHeight = HIWORD(lp);

               pD3Device->Reset(&d3dpp);// 表示新的设备的状态

               InvalidateRect(hWnd , NULL , TRUE);

               return 0;

        }

        return DefWindowProc(hWnd , msg , wp , lp);

}

int WINAPI WinMain(HINSTANCE hInstance , HINSTANCE hPrevInstance ,

                       PSTR lpCmdLine , int nCmdShow) {

        MSG msg;

        HWND hWnd;

        WNDCLASS winc;

        D3DDISPLAYMODE d3ddm;

        pDirect3D = Direct3DCreate8(D3D_SDK_VERSION);

        pDirect3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT , &d3ddm);

        ZeroMemory(&d3dpp , sizeof (D3DPRESENT_PARAMETERS));

        d3dpp.BackBufferFormat = d3ddm.Format;

        d3dpp.BackBufferCount = 1;

        d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;

        d3dpp.Windowed = TRUE;

        winc.style             = CS_HREDRAW | CS_VREDRAW;

        winc.lpfnWndProc       = WndProc;

        winc.cbClsExtra        = winc.cbWndExtra = 0;

        winc.hInstance         = hInstance;

        winc.hIcon             = LoadIcon(NULL , IDI_APPLICATION);

        winc.hCursor           = LoadCursor(NULL , IDC_ARROW);

        winc.hbrBackground     = (HBRUSH)GetStockObject(WHITE_BRUSH);

        winc.lpszMenuName      = NULL;

        winc.lpszClassName     = TEXT("KITTY");

        if (!RegisterClass(&winc)) return 0;

        hWnd = CreateWindow(

               TEXT("KITTY") , TITLE , WS_OVERLAPPEDWINDOW | WS_VISIBLE ,

               CW_USEDEFAULT , CW_USEDEFAULT , CW_USEDEFAULT , CW_USEDEFAULT ,

                NULL , NULL , hInstance , NULL

        );

        if (!hWnd) return 0;

        pDirect3D->CreateDevice(

               D3DADAPTER_DEFAULT , D3DDEVTYPE_HAL , hWnd ,

               D3DCREATE_SOFTWARE_VERTEXPROCESSING , &d3dpp , &pD3Device

        );

        while (GetMessage(&msg , NULL , 0 , 0 )) {

               TranslateMessage(&msg);

               DispatchMessage(&msg);

        }

        pDirect3D->Release();

        pD3Device->Release();

        return msg.wParam;

}