Question

目前，我需要在执行程序之前将显示模式更改为全屏无边框窗口以获得所需的结果。我想通过在程序运行时按Alt + Enter将显示模式从窗口更改为全屏无边框窗口。如何修改代码以使其能够在运行时更改显示模式？

SystemClass.cpp

void SystemClass::InitializeWindows()
{
    WNDCLASSEX wc;
    DEVMODE dmScreenSettings;

    int screenWidth, screenHeight;
    int posX, posY;


    // Get an external pointer to this object
    ApplicationHandle = this;

    // Get the instance of this application
    m_hinstance = GetModuleHandle( NULL );

    // Give the application a name
    m_applicationName = "Zero DirectX Framework";

    // Setup the windows class with default settings
    wc.style            = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
    wc.lpfnWndProc      = WndProc;
    wc.cbClsExtra       = 0;
    wc.cbWndExtra       = 0;
    wc.hInstance        = m_hinstance;
    wc.hIcon            = LoadIcon( NULL, IDI_WINLOGO );
    wc.hIconSm          = wc.hIcon;
    wc.hCursor          = LoadCursor( NULL, IDC_ARROW );
    wc.hbrBackground    = (HBRUSH)GetStockObject( BLACK_BRUSH );
    wc.lpszMenuName     = NULL;
    wc.lpszClassName    = m_applicationName;
    wc.cbSize           = sizeof( WNDCLASSEX );

    // Register the window class
    RegisterClassEx( &wc );

    // Determine the resolution of the clients desktop screen
    screenWidth  = GetSystemMetrics( SM_CXSCREEN );
    screenHeight = GetSystemMetrics( SM_CYSCREEN );

    // Setup the screen settings depending on whether it is running in full screen or in windowed mode
    if ( FULL_SCREEN )
    {
        // If full screen set the screen to maximum size of the users desktop and 32bit
        memset( &dmScreenSettings, 0, sizeof(dmScreenSettings) );
        dmScreenSettings.dmSize         = sizeof(dmScreenSettings);
        dmScreenSettings.dmPelsWidth    = (unsigned long)screenWidth;
        dmScreenSettings.dmPelsHeight   = (unsigned long)screenHeight;
        dmScreenSettings.dmBitsPerPel   = 32;
        dmScreenSettings.dmFields       = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;

        // Change the display settings to full screen
        ChangeDisplaySettings( &dmScreenSettings, CDS_FULLSCREEN );

        // Set the position of the window to the top left corner
        posX = posY = 0;

        // Create the window with the screen settings and get the handle to it
        m_hwnd = CreateWindowEx( WS_EX_APPWINDOW, m_applicationName, m_applicationName, 
        WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_POPUP,
        posX, posY, screenWidth, screenHeight, NULL, NULL, m_hinstance, NULL);

        SetMenu( m_hwnd, NULL );
    }
    else
    {
        // If windowed then set it to 800x600 resolution
        screenWidth  = 1280;
        screenHeight = 768;

        // Place the window in the middle of the screen
        posX = ( GetSystemMetrics( SM_CXSCREEN ) - screenWidth ) / 2;
        posY = ( GetSystemMetrics( SM_CYSCREEN ) - screenHeight) / 2;

        m_hwnd = CreateWindowEx( 0, m_applicationName, m_applicationName, WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU, 
        posX, posY, screenWidth, screenHeight, 
        NULL, NULL, m_hinstance, NULL );
    }

    // Bring the window up on the screen and set it as main focus
    ShowWindow( m_hwnd, SW_SHOW );
    SetForegroundWindow( m_hwnd );
    SetFocus( m_hwnd );

    // Hide the mouse cursor
    ShowCursor(true);
}

Answer 1

从窗口更改为全屏时，您必须reset设备，反之亦然一些说明：

您必须在重置之前释放默认池（即非托管视频ram）中的所有内存，然后再重新分配。
我为窗口和全屏维护了两个不同的present parameters，因为功能可能会有所不同。
请注意，Reset和CreateDevice会更改您使用的当前参数，例如通过在窗口模式下设置后缓冲区大小。您可能需要复制原始参数，以便在以后的重置调用中使用。
重置为窗口模式不会保留原始窗口大小和位置;你必须单独存放它们。

如何在运行时从窗口到全屏无边界窗口设计更改显示模式？

1 个答案: