cefsharp

CefSharp with Chromium Renders text to small after Upgrade v119.4.30

The application worked as expected up to version v107+. However, after upgrading from v108 to v119, the application did not work as expected. CefSharp with Chromium rendered the text too small.

Prior to Chromium v108:

Text displayed correctly within the application. Text size matched user expectations and system settings. After upgrading to Chromium v108 and later versions (up to v119):

Text rendered significantly smaller than expected. Text appears unreadable or difficult to read due to the reduced size.

Chromium rendered the text - responsive

Solution

  • To define a method or a variable, you need to follow this syntax:

    Declare a method that takes an IntPtr parameter and returns a bool value

    public static extern bool SetProcessDpiAwarenessContext(IntPtr dpiAwarenessContext);

    Declare a variable that holds an int constant with the value -1

    private const int DPI_AWARENESS_CONTEXT_UNAWARE = -1;

    Before initializing, call this method:

    if (!Cef.IsInitialized)
    {
        var r = SetProcessDpiAwarenessContext((System.IntPtr)DPI_AWARENESS_CONTEXT_UNAWARE);
        if (!r)
        {
            var error = Marshal.GetLastWin32Error();
            Trace.TraceWarning($@"Error settings DPI awareness: {error}.");
        }
        Cef.Initialize(settings, performDependencyCheck: true, browserProcessHandler: null);
    }

    Reference Link:

    https://github.com/cefsharp/CefSharp/issues/4410#issuecomment-1542363136