如何使抽绳的字体大小更大？ [英] How do I make font size of drawstring bigger?

问题描述

我找到了一些在图像上写文字的来源。

但我对图形课没有任何了解。

所以有人可以帮助我得到更大的字体大小？

这是我的源代码

I've found some source to write an text on image.
But I don't have any knowladge about graphic class.
So can somebody help me to get the font size bigger?
Here is my source code

private void write_text_on_image(string image_path)
        {
            var bmp = Bitmap.FromFile(image_path);
            var newImage = new Bitmap(bmp.Width, bmp.Height + 50);

            var gr = Graphics.FromImage(newImage);
            gr.DrawImageUnscaled(bmp, 0, 0);

            gr.DrawString("This is added text", SystemFonts.DefaultFont, Brushes.Black,
           
                new RectangleF(0, bmp.Height-450, bmp.Width-300, 50));
            string new_img_path = image_path.Replace("_1", "_2");
            newImage.Save(new_img_path);
            newImage.Dispose();
            bmp.Dispose();
            delete_old_img(image_path);
        }

我的尝试：



使用SystemFonts.CaptionFont代替SystemFonts.DefaultFont

What I have tried:

Used "SystemFonts.CaptionFont" instead of SystemFonts.DefaultFont"

推荐答案

而不是DefaultFont创建一个您想要的族和大小的字体

Rather than DefaultFont create a Font of the family and size you want

Font f = new Font(new FontFamily("Verdana"), 10);

并在DrawString中使用该字体对象（f）而不是DefaultFont

And use that font object (f) in DrawString instead of DefaultFont

尝试创建自己的字体。请参阅字体类（System.Drawing） [ ^ ]



最好是你有一个私人成员r变量并在构造函数中创建对象。

Try to create your own font. See Font Class (System.Drawing)[^]

Preferably you have a private member variable and create the object in the constructor.

private Font myFont;

public MyClassName()
{
    myFont = new Font("Arial", 14.0F, FontStyle.Bold);
}

private void write_text_on_image(string image_path)
{
...
    gr.DrawString("This is added text", myFont, Brushes.Black, ...);
...
}

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