如何在图像上绘制文字 [英] how to draw text on image

问题描述

我尝试制作类似油漆的程序，我想在图像中添加文字但是当我点击按钮时图像将替换为文字。

i try to make program like paint, i want to add text to an image but the image will replace with text when i click the button.

public partial class Form1 : Form
   {

       public Form1()
       {
           InitializeComponent();
       }
       private void DrawString()
       {
           FontDialog fndialog = new FontDialog();
           System.Drawing.Graphics formGraphics = this.CreateGraphics();
           string drawString = textBox2.Text;
           System.Drawing.Font drawFont = new System.Drawing.Font("Arial", 16);
           System.Drawing.SolidBrush drawBrush = new
               System.Drawing.SolidBrush(System.Drawing.Color.Black);
           float x = 13.300f;
           float y = 1.300f;
           formGraphics.DrawString(drawString, drawFont, drawBrush, x, y);
           drawFont.Dispose();
           drawBrush.Dispose();
           formGraphics.Dispose();
       }
       public void DrawText()
       {
           //fix yang ini.
           string abc = textBox1.Text;
           Graphics grf = pictureBox1.CreateGraphics();
           try
           {
               int x = Convert.ToInt32(textBox4.Text);
               int y =Convert.ToInt32(textBox5.Text);
               int size = Convert.ToInt32(textBox3.Text);
               string font = textBox2.Text;
               FontFamily fnfm = new FontFamily(font);
               FontDialog fndial = new FontDialog();
               grf.Clear(Color.White);
               using (Font myFont = new Font(fnfm , size))
               {
                   grf.DrawString(abc , myFont, Brushes.Green, new PointF(x, y));
               }
           }
           finally
           {
               grf.Dispose();
           }
       }


       private void button1_Click(object sender, EventArgs e)
       {
           DrawText();

       }


   }

i use以下代码。

i use the following code.

推荐答案

参见在图像上动态写入文本 [ ^ ]

和

将文本写入透明GIF [ ^ ]

和

另一个动态ASP.NET文本图像 [ ^ ]

See Dynamically Write Text On An Image[^]
and
Write text to transparent GIF[^]
and
Another Dynamic ASP.NET Text Image[^]

删除下面的l您的代码中的ine

remove below line from your code

//grf.Clear(Color.White);

你已经完成了:)



< b> 为什么！

清除方法清除图形的绘图表面并将背景颜色设置为白色，您将丢失原始图片已加载。

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