How to get current display mode (resolution, refresh rate) of a monitor/output in DXGI?

Question

I am creating a multi-monitor full screen DXGI/D3D application. I am enumerating through the available outputs and adapters in preparation of creating their swap chains.

Answer 1

This might be what you are looking for:


            // Get display mode list
            std::vector modeList = GetDisplayModeList(*outputItor);
            for(std::vector::iterator modeItor = modeList.begin(); modeItor != modeList.end(); ++modeItor)
            {
            //  PrintDisplayModeInfo(*modeItor);
            }
        }




std::vector GetDisplayModeList(IDXGIOutput* output)
{
    UINT num = 0;
    DXGI_FORMAT format = DXGI_FORMAT_R32G32B32A32_TYPELESS;
    UINT flags = DXGI_ENUM_MODES_INTERLACED | DXGI_ENUM_MODES_SCALING;

    // Get number of display modes
    output->GetDisplayModeList(format, flags, &num, 0);

    // Get display mode list
    DXGI_MODE_DESC * pDescs = new DXGI_MODE_DESC[num];
    output->GetDisplayModeList(format, flags, &num, pDescs);

    std::vector displayList;
    for(int i = 0; i < num; ++i)
    {
        displayList.push_back(&pDescs[i]);
    }

    return displayList;
}