在C＃中使用的DrawString文本两端 [英] Justifying text using DrawString in C#

问题描述

我画一个 System.Drawing.Graphics 对象上的文字。我使用了的DrawString 法，文本字符串时，字体，一个刷，一个包围的RectangleF 和的StringFormat 作为参数。<​​/ p>

展望的StringFormat ，我发现我可以将其设置的对齐属性到附近，中心或远东。但是我还没有找到一种方法将其设置为合理的。我怎样才能做到这一点？

感谢您的帮助！

解决方案

有没有内置的方式来做到这一点。一些变通都在这个线程提到的：

的 http://social.msdn.microsoft.com/Forums/zh/winforms/thread/aebc7ac3-4732-4175-a95e-623fda65140e

他们建议使用覆盖的RichTextBox ，覆盖 SelectionAlignment 财产（见此页如何），并将其设置为对齐

覆盖的胆量围绕此的PInvoke呼叫：

  PARAFORMAT FMT =新PARAFORMAT（）; 
 fmt.cbSize = Marshal.SizeOf（FMT）; 
 fmt.dwMask = PFM_ALIGNMENT; 
 fmt.wAlignment =（短期）的价值; 
 
的SendMessage（新HandleRef（这一点，手柄），//这在RichTextBox 
 EM_SETPARAFORMAT，
 SCF_SELECTION，楼盘FMT）; 
  

不知道如何好这个可以集成到现有的模型（因为我假设你吸引更多的除了文本），但它可能是你唯一的选择。

I'm drawing text on a System.Drawing.Graphics object. I'm using the DrawString method, with the text string, a Font, a Brush, a bounding RectangleF, and a StringFormat as arguments.

Looking into StringFormat, I've found that I can set it's Alignment property to Near, Center or Far. However I haven't found a way to set it to Justified. How can I achieve this?

Thank you for your help!

解决方案

There is no built-in way to do it. Some work-arounds are mentioned on this thread:

http://social.msdn.microsoft.com/Forums/zh/winforms/thread/aebc7ac3-4732-4175-a95e-623fda65140e

They suggest using an overridden RichTextBox, overriding the SelectionAlignment property (see this page for how) and setting it to Justify.

The guts of the override revolve around this pInvoke call:

PARAFORMAT fmt = new PARAFORMAT();
fmt.cbSize = Marshal.SizeOf(fmt);
fmt.dwMask = PFM_ALIGNMENT;
fmt.wAlignment = (short)value;

SendMessage(new HandleRef(this, Handle), // "this" is the RichTextBox
    EM_SETPARAFORMAT,
    SCF_SELECTION, ref fmt);

Not sure how well this can be integrated into your existing model (since I assume you're drawing more than text), but it might be your only option.

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