CefSharp.WinForms "Dock =DockStyle.Fill" 没效果，黑边。如何让ChromiumWebBrowser填充TBForm？

Question

public partial class TBForm : Form
{
    private readonly ChromiumWebBrowser browser;

    public TBForm()
    {
        InitializeComponent();

        browser = new ChromiumWebBrowser("www.baidu.com")
        {
            Dock = DockStyle.Fill,
        };

        this.Controls.Add(browser);
    }
}

i got this result

CefSharp.WinForms "Dock =DockStyle.Fill" no effect, black edge.

how to make the ChromiumWebBrowser fill the TBForm?

Answer 1

Do you tried disable the GPU engine using CefCommandLineArgs?

When you declare:

CefSettings settings = new CefSettings();

before initializations:

Cef.Initialize(settings);

Try to add the nex line of code:

settings.CefCommandLineArgs.Add("disable-gpu", "1");

Answer 2

My experience was this was caused from using higher DPI settings. I used the recommended helper method at the entry point of my application:

Cef.EnableHighDPISupport()

See here for more details: https://github.com/cefsharp/CefSharp/wiki/General-Usage#high-dpi-displayssupport

Answer 3

Your windows screen resolution is not set to 100%. See the image below:

This is because CefSharp is using GPU to render and will depend on your screen resolution setting.

using this will fix the rendering to host display highest resolution:

Cef.EnableHighDPISupport();

And this will disable GPU rendering:

var settings = new CefSettings();
settings.CefCommandLineArgs.Add("disable-gpu", "1");
Cef.Initialize(settings);