为全屏游戏编写代码 [英] writing code for fullscreen game

问题描述

你好，我试图创建一个全屏窗口缓冲区，可以写入点击冒险游戏，但我发现覆盖Windows任务栏的问题，实际上使用SetDIBitsToDevice显示像素是这里
代码：

hello, i trying to create a fullscreen window buffer which can be written to for a point and click adventure game but i am finding problems with overwriting the windows taskbar and actually getting the pixels to display using SetDIBitsToDevice here is the code:

//原住民衰变Demo.cpp：定义申请的入口点。

//



#include" stdafx.h"

#include" Aboriginal Decay Demo.h"



#define MAX_LOADSTRING 100



//全局变量：

HINSTANCE hInst;                                  //当前实例

WCHAR szTitle [MAX_LOADSTRING];                   //标题栏文本

WCHAR szWindowClass [MAX_LOADSTRING];            //主窗口类名称

FILE * debugfile = NULL;

int screenxsize，screenysize;

char * screenbuffer;

BITMAPINFO screenbitmapinfo;



//此代码模块中包含的函数的前向声明：

ATOM     ;            MyRegisterClass（HINSTANCE hInstance）;

BOOL                InitInstance（HINSTANCE，int）;
$
LRESULT CALLBACK   的WndProc（HWND，UINT，WPARAM，LPARAM）;



INT APIENTRY wWinMain（标签：APIWinHTTP HINSTANCE的hInstance，

    _In_opt_ HINSTANCE hPrevInstance，

   标签：APIWinHTTP LPWSTR    lpCmdLine，

   标签：APIWinHTTP INT    &NBSP ;  nCmdShow）

{

     UNREFERENCED_PARAMETER（hPrevInstance）;

     UNREFERENCED_PARAMETER（lpCmdLine）;



     int x，y;

     // TODO：将代码放在此处。

     fopen_s（& debugfile，" debug.txt"，" w"）;

     if（debugfile == NULL）{

        返回FALSE;

    }

     fprintf_s（debugfile，" opened debugfile ... \ n"）;

     fflush（debugfile）;

     screenxsize = GetSystemMetrics（SM_CXFULLSCREEN）;

     screenysize = GetSystemMetrics（SM_CYFULLSCREEN）;    // SPI_GetWorkArea有SystemParametersInfo允许任务栏

     fprintf_s（debugfile，" screenxsize =％d，screenysize =％d \ n"，screenxsize，screenysize）;

     fflush（debugfile）;

     if（（screenbuffer =（char *）malloc（screenxsize * screenysize * 3））== NULL）{

         fprintf_s（debugfile，"无法创建screenbuffer ... \ n"）;

         fflush（debugfile）;

        返回FALSE;

    }

     for（y = 0; y< screenysize; y ++）{

   &NBSP;&NBSP;&NBSP;   for（x = 0; x< screenxsize; x ++）{

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   screenbuffer [（x + screenxsize * y）* 3] = 0;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   screenbuffer [（x + screenxsize * y）* 3 + 1] = 0;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   screenbuffer [（x + screenxsize * y）* 3 + 2] = 255;

   &NBSP;&NBSP;&NBSP;  }

    }

     screenbitmapinfo.bmiColors [0] .rgbBlue = 0;

     screenbitmapinfo.bmiColors [0] .rgbGreen = 0;

     screenbitmapinfo.bmiColors [0] .rgbRed = 0;

     screenbitmapinfo.bmiColors [0] .rgbReserved = 0;

     screenbitmapinfo.bmiHeader.biBitCount = 24;

     screenbitmapinfo.bmiHeader.biClrImportant = 0;

     screenbitmapinfo.bmiHeader.biSize = sizeof（BITMAPINFO）;

     screenbitmapinfo.bmiHeader.biWidth = screenxsize;

     screenbitmapinfo.bmiHeader.biHeight = screenysize;

     screenbitmapinfo.bmiHeader.biPlanes = 1;

     screenbitmapinfo.bmiHeader.biCompression = BI_RGB;

     screenbitmapinfo.bmiHeader.biSizeImage = 0;

     screenbitmapinfo.bmiHeader.biXPelsPerMeter = 0;

     screenbitmapinfo.bmiHeader.biYPelsPerMeter = 0;

     screenbitmapinfo.bmiHeader.biClrUsed = 0;

     //初始化全局字符串

     LoadStringW（hInstance，IDS_APP_TITLE，szTitle，MAX_LOADSTRING）;

     LoadStringW（hInstance，IDC_ABORIGINALDECAYDEMO，szWindowClass，MAX_LOADSTRING）;

     MyRegisterClass（hInstance）;



     //执行应用程序初始化：

     if（！InitInstance（hInstance，nCmdShow））

     {

   &NBSP;&NBSP;&NBSP;  返回FALSE;

    }
$


     HACCEL hAccelTable = LoadAccelerators（hInstance，MAKEINTRESOURCE（IDC_ABORIGINALDECAYDEMO））;
$


     MSG msg;



$


    //主消息循环：

    while（GetMessage（& msg，nullptr，0,0））

    {

        if（！TranslateAccelerator（msg.hwnd，hAccelTable，& msg））

        {

            TranslateMessage（& msg）;

            DispatchMessage（& msg）;

        }
    }


    return（int）msg.wParam;

}



$


/ /
$
// 功能：MyRegisterClass（）

//

// 目的：注册窗口类。

//

ATOM MyRegisterClass（HINSTANCE hInstance）

{

  &NBSP;&NBSP; WNDCLASSEXW wcex;



    wcex.cbSize = sizeof（WNDCLASSEX）;



    wcex.style&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; = CS_HREDRAW | CS_VREDRAW;

    wcex.lpfnWndProc&NBSP;&NBSP;&NBSP; = WndProc;

    wcex.cbClsExtra&NBSP;&NBSP;&NBSP;&NBSP; = 0;

    wcex.cbWndExtra&NBSP;&NBSP;&NBSP;&NBSP; = 0;

    wcex.hInstance&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; = hInstance;

    wcex.hIcon&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; = NULL;

    wcex.hCursor&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; = LoadCursor（nullptr，IDC_ARROW）;

    wcex.hbrBackground&NBSP; =（HBRUSH）（COLOR_WINDOW + 1）;

     wcex.lpszMenuName = NULL;   // MAKEINTRESOURCEW（IDC_ABORIGINALDECAYDEMO）;

    wcex.lpszClassName&NBSP; = szWindowClass;

    wcex.hIconSm&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; = LoadIcon（wcex.hInstance，MAKEINTRESOURCE（IDI_SMALL））;



    return RegisterClassExW（& wcex）;

}



//

//  功能：InitInstance（HINSTANCE，int）

//

//  目的：保存实例句柄并创建主窗口

//

//  评论：

//

//       在此功能中，我们将实例句柄保存在全局变量中，并且
//       创建并显示主程序窗口。

//

BOOL InitInstance（HINSTANCE hInstance，int nCmdShow）

{

   hInst = hInstance; //在我们的全局变量中存储实例句柄



   HWND的HWND = CreateWindowW（szWindowClass，szTitle，WS_POPUP，

&NBSP;&NBSP;&NBSP;&NBSP;&NBSP; 0，0，screenxsize，screenysize，nullptr，nullptr，的hInstance，nullptr）;



   if（！hWnd）

   {

     返回FALSE;

   }


   ShowWindow（hWnd，nCmdShow）;

   UpdateWindow（hWnd）;



  返回TRUE;

}


//

// 功能：WndProc（HWND，UINT，WPARAM，LPARAM）

//

// 目的：处理主窗口的消息。

//

//  WM_COMMAND&NBSP; - 处理申请菜单

//  WM_PAINT&NBSP;&NBSP;&NBSP; - 绘制主窗口

//  WM_DESTROY&NBSP; - 发布退出消息并返回

//

//

LRESULT CALLBACK WndProc（HWND hWnd，UINT消息，WPARAM wParam，LPARAM lParam ）

{

   开关（留言）

    {

   案例WM_PAINT：

        {

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;&NBSP; fprintf_s（debugfile，"处理WM_PAINT ... \ n"）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   fflush（debugfile）;

            PAINTSTRUCT ps;

            HDC hdc = BeginPaint（hWnd，& ps）;

            // TODO：在这里添加任何使用hdc的绘图代码...

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   SetDIBitsToDevice（hdc，0,0，screenxsize，screenysize，0,0,0,0，screenbuffer，& screenbitmapinfo，0）;

   &NBSP;&NBSP;&NBSP; &NBSP;&NBSP;&NBSP;   EndPaint（hWnd，& ps）;

        }
       休息;

   案例WM_DESTROY：

        PostQuitMessage（0）;

       休息;

   默认值：

       返回DefWindowProc（hWnd，message，wParam，lParam）;

    }
   返回0;

}

// Aboriginal Decay Demo.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "Aboriginal Decay Demo.h"

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst;                                // current instance
WCHAR szTitle[MAX_LOADSTRING];                  // The title bar text
WCHAR szWindowClass[MAX_LOADSTRING];            // the main window class name
FILE *debugfile = NULL;
int screenxsize, screenysize;
char *screenbuffer;
BITMAPINFO screenbitmapinfo;

// Forward declarations of functions included in this code module:
ATOM                MyRegisterClass(HINSTANCE hInstance);
BOOL                InitInstance(HINSTANCE, int);
LRESULT CALLBACK    WndProc(HWND, UINT, WPARAM, LPARAM);

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
    _In_opt_ HINSTANCE hPrevInstance,
    _In_ LPWSTR    lpCmdLine,
    _In_ int       nCmdShow)
{
    UNREFERENCED_PARAMETER(hPrevInstance);
    UNREFERENCED_PARAMETER(lpCmdLine);

    int x, y;
    // TODO: Place code here.
    fopen_s(&debugfile, "debug.txt", "w");
    if (debugfile == NULL) {
        return FALSE;
    }
    fprintf_s(debugfile, "opened debugfile...\n");
    fflush(debugfile);
    screenxsize = GetSystemMetrics(SM_CXFULLSCREEN);
    screenysize = GetSystemMetrics(SM_CYFULLSCREEN);    // there is SystemParametersInfo for SPI_GetWorkArea to allow taskbar
    fprintf_s(debugfile, "screenxsize=%d, screenysize=%d\n", screenxsize, screenysize);
    fflush(debugfile);
    if ((screenbuffer = (char *)malloc(screenxsize*screenysize * 3)) == NULL) {
        fprintf_s(debugfile, "cannot create screenbuffer...\n");
        fflush(debugfile);
        return FALSE;
    }
    for (y = 0; y < screenysize; y++) {
        for (x = 0; x < screenxsize; x++) {
            screenbuffer[(x + screenxsize * y) * 3] = 0;
            screenbuffer[(x + screenxsize * y) * 3 + 1] = 0;
            screenbuffer[(x + screenxsize * y) * 3 + 2] = 255;
        }
    }
    screenbitmapinfo.bmiColors[0].rgbBlue = 0;
    screenbitmapinfo.bmiColors[0].rgbGreen = 0;
    screenbitmapinfo.bmiColors[0].rgbRed = 0;
    screenbitmapinfo.bmiColors[0].rgbReserved = 0;
    screenbitmapinfo.bmiHeader.biBitCount = 24;
    screenbitmapinfo.bmiHeader.biClrImportant = 0;
    screenbitmapinfo.bmiHeader.biSize = sizeof(BITMAPINFO);
    screenbitmapinfo.bmiHeader.biWidth = screenxsize;
    screenbitmapinfo.bmiHeader.biHeight = screenysize;
    screenbitmapinfo.bmiHeader.biPlanes = 1;
    screenbitmapinfo.bmiHeader.biCompression = BI_RGB;
    screenbitmapinfo.bmiHeader.biSizeImage = 0;
    screenbitmapinfo.bmiHeader.biXPelsPerMeter = 0;
    screenbitmapinfo.bmiHeader.biYPelsPerMeter = 0;
    screenbitmapinfo.bmiHeader.biClrUsed = 0;
    // Initialize global strings
    LoadStringW(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
    LoadStringW(hInstance, IDC_ABORIGINALDECAYDEMO, szWindowClass, MAX_LOADSTRING);
    MyRegisterClass(hInstance);

    // Perform application initialization:
    if (!InitInstance(hInstance, nCmdShow))
    {
        return FALSE;
    }

    HACCEL hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_ABORIGINALDECAYDEMO));

    MSG msg;



    // Main message loop:
    while (GetMessage(&msg, nullptr, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }

    return (int) msg.wParam;
}



//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEXW wcex;

    wcex.cbSize = sizeof(WNDCLASSEX);

    wcex.style          = CS_HREDRAW | CS_VREDRAW;
    wcex.lpfnWndProc    = WndProc;
    wcex.cbClsExtra     = 0;
    wcex.cbWndExtra     = 0;
    wcex.hInstance      = hInstance;
    wcex.hIcon          = NULL;
    wcex.hCursor        = LoadCursor(nullptr, IDC_ARROW);
    wcex.hbrBackground  = (HBRUSH)(COLOR_WINDOW+1);
    wcex.lpszMenuName = NULL;   // MAKEINTRESOURCEW(IDC_ABORIGINALDECAYDEMO);
    wcex.lpszClassName  = szWindowClass;
    wcex.hIconSm        = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL));

    return RegisterClassExW(&wcex);
}

//
//   FUNCTION: InitInstance(HINSTANCE, int)
//
//   PURPOSE: Saves instance handle and creates main window
//
//   COMMENTS:
//
//        In this function, we save the instance handle in a global variable and
//        create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hInst = hInstance; // Store instance handle in our global variable

   HWND hWnd = CreateWindowW(szWindowClass, szTitle, WS_POPUP,
      0, 0, screenxsize, screenysize, nullptr, nullptr, hInstance, nullptr);

   if (!hWnd)
   {
      return FALSE;
   }

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);

   return TRUE;
}

//
//  FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE: Processes messages for the main window.
//
//  WM_COMMAND  - process the application menu
//  WM_PAINT    - Paint the main window
//  WM_DESTROY  - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_PAINT:
        {
            fprintf_s(debugfile, "processing WM_PAINT...\n");
            fflush(debugfile);
            PAINTSTRUCT ps;
            HDC hdc = BeginPaint(hWnd, &ps);
            // TODO: Add any drawing code that uses hdc here...
            SetDIBitsToDevice(hdc, 0, 0, screenxsize, screenysize, 0, 0, 0, 0, screenbuffer, &screenbitmapinfo, 0);
            EndPaint(hWnd, &ps);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hWnd, message, wParam, lParam);
    }
    return 0;
}

推荐答案

看看这是否有帮助 -
如何使用全屏窗口覆盖任务栏？

See if this helps - How do I cover the taskbar with a fullscreen window?

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