Text justification using DrawString in C #

Question

I draw text on an object System.Drawing.Graphics. I use the DrawStringtext string method ,, Fonta Brush, bounding RectangleFand a StringFormatas arguments.

Looking at StringFormat, I found that I can set the property Alignmentto Near, Centeror Far. However, I did not find a way to install it in Reasonable. How can i achieve this?

Thank you for your help!

Answer 1

There is no built-in way to do this. Some workarounds are mentioned in this thread:

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

RichTextBox, SelectionAlignment (. ) Justify.

pInvoke:

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);

, ( , , ), .

Answer 2

:)

http://csharphelper.com/blog/2014/10/fully-justify-a-line-of-text-in-c/

- , :

float extra_space = rect.Width - total_width; // where total_width is the sum of all measured width for each word
int num_spaces = words.Length - 1; // where words is the array of all words in a line
if (words.Length > 1) extra_space /= num_spaces; // now extra_space has width (in px) for each space between words

:

float x = rect.Left;
float y = rect.Top;
for (int i = 0; i < words.Length; i++)
{
    gr.DrawString(words[i], font, brush, x, y);

    x += word_width[i] + extra_space; // move right to draw the next word.
}