DirectX Present Parameters Windowed=false not working

Question

I am trying to make a game. I am using directx 9 to do so and I have some issues trying to go into full screen mode. I made a function that initalized all of the Present Parameters . Everything is fine except when I make windowed = false (ie i set fullscreen to true).

here is my present parameters variable: D3DPRESENT_PARAMETERS d3dpp;

Here is the code for the d3dpp variable. Most if not all of this code comes from a book called Programming 2d Games by charles kelley.

void Graphics::initD3Dpp()
{
try {
    ZeroMemory(&d3dpp, sizeof(d3dpp));              

    d3dpp.BackBufferWidth = width;
    d3dpp.BackBufferHeight = height;
    if (fullscreen)                                  
        d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;  
    else
        d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;   
    d3dpp.BackBufferCount = 1;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    d3dpp.hDeviceWindow = mainhwnd;
    d3dpp.Windowed = (!fullscreen); //THIS LINE RIGHT HERE IS THE ISSUE
    d3dpp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
}
catch (...)
{
    throw(GameError(gameErrorNS::FATAL_ERROR,
        "Error initializing D3D presentation parameters"));

}

}

I do not see why .windowed does not work for me. Please ask me if you need more context.

How exactly doesn't it work? What you see and what you expected to see? — Michael Nastenko
What width & height did you pick? Remember it has to be a supported display mode. — Chuck Walbourn
it doesnt work because when I create my directx device, it is a null pointer and my program crashes. when i use fullscreen but when there is no fullscreen, the directx device is created. — lvl99knight
Show your CreateDevice call. What HRESULT do you have from CreateDevice? And put all additional data to question itself. — Michael Nastenko

MuertoExcobito MuertoExcobito · Accepted Answer · 2017-03-26T03:18:33

From the comments, you suggest that you are using 600x480. It's highly doubtful that this is a supported resolution on your system, more likely, you meant to be using 640x480. As far as I know, this resolution is supported by essentially every D3D9 driver.

However, hardcoding the resolution is not a robust solution, it's far more practical to follow the advice stated in the documentation for D3DPRESENT_PARAMETERS, and use the EnumAdapterModes function, to get a list of valid resolutions and display formats for your device.

DirectX Present Parameters Windowed=false not working

1 Answers