Lesson Overview
Making your game fullscreen is easy, but requires changing a few details of the program,
as well as adding a couple lines of code.
In this lesson we will cover two things.
First, we will go over how to globalize your screen resolution and why you would do this. Second, we'll cover the mechanics of making a window go into fullscreen mode.
Setting Up the Screen Size
// define the screen resolution
#define SCREEN_WIDTH 800
#define SCREEN_HEIGHT 600
hWnd = CreateWindowEx(NULL,
L"WindowClass",
L"Our Direct3D Program",
WS_OVERLAPPEDWINDOW,
300, 300,
SCREEN_WIDTH, SCREEN_HEIGHT,
NULL,
NULL,
hInstance,
NULL);
Changing to Fullscreen Mode
hWnd = CreateWindowEx(NULL,
L"WindowClass",
L"Our Direct3D Program",
WS_EX_TOPMOST | WS_POPUP, // fullscreen values
0, 0, // the starting x and y positions should be 0
SCREEN_WIDTH, SCREEN_HEIGHT,
NULL,
NULL,
hInstance,
NULL);
Next, we have to tell DirectX about our new screen resolution.
We do this by making a few changes to the d3dpp struct we built in the last
lesson.
Let's look at what they are before we see what they do.
D3DPRESENT_PARAMETERS d3dpp; // create a struct to hold various device information ZeroMemory(&d3dpp, sizeof(d3dpp)); // clear out the struct for use d3dpp.Windowed = FALSE; // program fullscreen, not windowed d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; // discard old frames d3dpp.hDeviceWindow = hWnd; // set the window to be used by Direct3D d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8; //set the back buffer format to 32-bit d3dpp.BackBufferWidth = SCREEN_WIDTH; //set the width of the buffer d3dpp.BackBufferHeight = SCREEN_HEIGHT; //set the height of the buffer
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