为什么richtextbox没有正确显示此表？

Question

显然,Microsoft提供的RichTextBox并不完全支持RTF规范.出于某种原因,它不允许多行行,而是破坏格式.

例如,以下是生成表格的RTF代码:

\par
\trowd\trgaph108\trleft36\trqc\trrh280\trpaddl108\trpaddr108\trpaddfl3\trpaddfr3
\cellx2000\cellx4000\cellx6000\cellx6500\cellx8500\cellx9000\cellx11000
\pard\intbl Length of Time until Replayment\cell\cell Flate Fee Percentage\cell\cell Broker and Application Fees\cell\cell Total lien on case\cell\row
\trowd\trgaph108\trleft36\trqc\trrh280\trpaddl108\trpaddr108\trpaddfl3\trpaddfr3
\cellx2000\cellx4000\cellx6000\cellx6500\cellx8500\cellx9000\cellx11000
\pard\intbl 0-6 \cell Months \cell 40% \cell\cell 310 \cell\cell\{#TOTALLIEN0-6#\}\cell\row
\trowd\trgaph108\trleft36\trqc\trrh280\trpaddl108\trpaddr108\trpaddfl3\trpaddfr3
\cellx2000\cellx4000\cellx6000\cellx6500\cellx8500\cellx9000\cellx11000
\pard\intbl 7-12 \cell Months \cell 60% \cell\cell 310 \cell\cell\{#TOTALLIEN7-12#\} \cell\row
\trowd\trgaph108\trleft36\trqc\trrh280\trpaddl108\trpaddr108\trpaddfl3\trpaddfr3
\cellx2000\cellx4000\cellx6000\cellx6500\cellx8500\cellx9000\cellx11000
\pard\intbl 13-18 \cell Months \cell 100% \cell\cell 310 \cell\cell\{#TOTALLIEN13-18#\} \cell\row
\trowd\trgaph108\trleft36\trqc\trrh280\trpaddl108\trpaddr108\trpaddfl3\trpaddfr3
\cellx2000\cellx4000\cellx6000\cellx6500\cellx8500\cellx9000\cellx11000
\pard\intbl 19-24 \cell Months \cell 150% \cell\cell 310 \cell\cell\{#TOTALLIEN19-24#\} \cell\row
\trowd\trgaph108\trleft36\trqc\trrh280\trpaddl108\trpaddr108\trpaddfl3\trpaddfr3
\cellx2000\cellx4000\cellx6000\cellx6500\cellx8500\cellx9000\cellx11000
\pard\intbl 25-36 \cell Months \cell 200% \cell\cell 310 \cell\cell\{#TOTALLIEN25-36#\} \cell
\row\trowd\trgaph108\trleft36\trqc\trrh280\trpaddl108\trpaddr108\trpaddfl3\trpaddfr3
\cellx2000\cellx4000\cellx6000\cellx6500\cellx8500\cellx9000\cellx11000
\pard\intbl 37+ \cell Months \cell 300% \cell\cell 310 \cell\cell\{#TOTALLIEN37#\} \cell

如果单词和wordpad都可以正常工作.文本太长的顶行会分成多个行,但是在Richtext框中它会做一些古怪的事情.

写字板看起来像这样: wordpad RTF表http://img231.imageshack.us/img231/2720/wordpadrtf.jpg

Richtext框如下所示:richtextbox table http://img262.imageshack.us/img262/9756/richtextboxrtf.jpg

如何使richtextbox正常工作？

Answer 1

我找到了解决方案.显然,每个系统上都有多个RichEdit库,默认为旧版本(我认为是4.0).5.0修复了RTF解释的大部分问题.要获得使用它的RichtextBox,必须使RichTextBox惰性化,并重载CreateParams属性.

我是这样做的:

public partial class FullRichtextBox : RichTextBox {
    public FullRichtextBox() :base() {
        InitializeComponent();
    }
    [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
    static extern IntPtr LoadLibrary(string lpFileName);

    protected override CreateParams CreateParams {
        get {
            CreateParams param = base.CreateParams;
            if (LoadLibrary("msftedit.dll") != IntPtr.Zero) {
                param.ClassName = "RICHEDIT50W";
            }
            return param;
        }
    }
}