C# SharpDX、DirectWrite和Windows窗体

可以在WinForm应用程序中使用DirectWrite将文本渲染到PictureBox吗

我正在使用SharpDX，并且已经阅读了DirectWrite示例，试图构建最简单的工作案例

我创建了一个表单，只添加了一个pictureBox。然后输入以下代码。表单将显示，但在PictureBox中看不到任何内容

任何指导都将不胜感激

谢谢

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
//using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using SharpDX.Direct2D1;
using SharpDX.DXGI;
using SharpDX;
using SharpDX.DirectWrite;

using AlphaMode = SharpDX.Direct2D1.AlphaMode;
using Factory = SharpDX.Direct2D1.Factory;

namespace d2dwTextEdit
{
public partial class Form1 : Form
{
    public Factory Factory2D { get; private set; }
    public SharpDX.DirectWrite.Factory FactoryDWrite { get; private set; }
    public WindowRenderTarget RenderTarget2D { get; private set; }
    public SolidColorBrush SceneColorBrush { get; private set; }
    public TextFormat TextFormat { get; private set; }
    public SharpDX.RectangleF ClientRectangle { get; private set; }


    public Form1()
    {
        InitializeComponent();
        Initialize();
        Render();
    }

    protected void Initialize()
    {
        Factory2D = new SharpDX.Direct2D1.Factory();
        FactoryDWrite = new SharpDX.DirectWrite.Factory();

        HwndRenderTargetProperties properties = new HwndRenderTargetProperties();
        properties.Hwnd = pictureBox1.Handle;
        properties.PixelSize = new System.Drawing.Size(pictureBox1.Width, pictureBox1.Height);
        properties.PresentOptions = PresentOptions.None;

        TextFormat = new TextFormat(FactoryDWrite, "Calibri", 30) { TextAlignment = TextAlignment.Center, ParagraphAlignment = ParagraphAlignment.Center };

        RenderTarget2D = new WindowRenderTarget(Factory2D, new RenderTargetProperties(new PixelFormat(Format.Unknown, AlphaMode.Premultiplied)), properties);
        RenderTarget2D.AntialiasMode = AntialiasMode.PerPrimitive;
        RenderTarget2D.TextAntialiasMode = TextAntialiasMode.Cleartype;

        ClientRectangle = new RectangleF(0, 0, pictureBox1.Width, pictureBox1.Height);

        SceneColorBrush = new SolidColorBrush(RenderTarget2D, Colors.White);
        SceneColorBrush.Color = Colors.Black;               


    }

    private void Render()
    {
        RenderTarget2D.Clear(Colors.White);
        RenderTarget2D.DrawText("Hello Marshall", TextFormat, ClientRectangle, SceneColorBrush);
    }

}
}

---

实际上，您不希望使用HwnRenderTarget渲染“到PictureBox”。实际上，您希望渲染到PictureBox负责渲染的位图中。您可以通过创建一个“共享位图”（我不太熟悉SharpDX，但底层方法是ID2D1RenderTarget:：CreateSharedBitmap（））来实现这一点，将其渲染为该位图，然后在调用EndDraw（）后使PictureBox无效.

嗨，我有点像你的问题示例，但我最终设法解决了这个问题，因为我想独立开始编写游戏，所有的绘制方法都必须在

RenderTarget

类的

beginDraw

和

endDraw

方法中。您还需要实现

RenderLoop

类，这将为您提供回调循环委托。抱歉我的代码太粗糙了

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using SharpDX.Direct3D;
using SharpDX.Direct2D1;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using SharpDX.DXGI;
using SharpDX;
using SharpDX.Windows;
using System.Globalization;


using SharpDX.DirectWrite;

namespace dx11
{


    public partial class Form1 : Form
    {
        private SharpDX.Direct3D10.Device _mDevice = null;
        WindowRenderTarget wndRender = null;
        SharpDX.Direct2D1.Factory fact = new SharpDX.Direct2D1.Factory(SharpDX.Direct2D1.FactoryType.SingleThreaded);
        SolidColorBrush scenebrush;
        RenderTargetProperties rndTargProperties;
        HwndRenderTargetProperties hwndProperties;
        SharpDX.Windows.RenderForm form = new RenderForm();
        RenderLoop.RenderCallback callback;

        public Form1()
        {
            InitializeComponent();

            SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint, true);

            form.Width = 600;
            form.Height = 600;
            test();
            callback = new RenderLoop.RenderCallback(Render);

            RenderLoop.Run(form, callback);                            
        }

        private void test()
        {
                rndTargProperties = new RenderTargetProperties(new PixelFormat(Format.B8G8R8A8_UNorm, AlphaMode.Premultiplied));

                hwndProperties = new HwndRenderTargetProperties();
                hwndProperties.Hwnd = form.Handle;
                hwndProperties.PixelSize = new SharpDX.DrawingSize(form.ClientSize.Width, form.ClientSize.Height);
                hwndProperties.PresentOptions = PresentOptions.None;
                wndRender = new WindowRenderTarget(fact, rndTargProperties, hwndProperties);
                scenebrush = new SolidColorBrush(wndRender, Colors.Red);
               // scenebrush.Color = Colors.Cornsilk;
                form.Show();
        }

        public void Render()
        {    

            wndRender.BeginDraw();
            wndRender.Clear(Colors.DarkBlue);
            wndRender.DrawRectangle(new SharpDX.RectangleF(10, 10, 50, 50), scenebrush, 2.00F);
            wndRender.Flush();
               wndRender.EndDraw();
        }

    }
}

---

这将创建一个在左上角带有红方块的蓝色窗体。

在窗口可见之前渲染任何内容都不会起作用。显示的事件是第一个引发以指示窗口可见的事件。改用绘画活动。谢谢你的帮助，汉斯。不幸的是。。。没有快乐。我在pictureBox和表单本身的绘制处理程序中调用Render（），没有任何更改。