Font Constructor(Font,Single)

In This Topic

Initializes a new Font object from the specified Font object and special style

Syntax

Visual Basic
C#

'Declaration
 
Public Function New( _
   ByVal font As Font, _
   ByVal size As Single _
)

public Font( 
   Font font,
   float size
)

Parameters

font: Special Font from which is used to create new font
size: The size of the new Font object.

Remarks

this is used to create a new Font from template font which is given by parameter Font, the parameter size show you a chance to redefine the Font.Size.

if you want to zoom Font.Size, you can get the size from your template font, and multiply it with the zoom factor you expected, which a new size you will got, for example named new size variable newSize, then use this constructor to create new Font: Font newFont = new Font(templateFont, newSize);

This is a simple WinForm program which draw two line text on special position of form. The first line, a string was drawed with winForm default font: Microsoft Sans Serif, 8.25pt, The second line, a sting was drawed with Font whic size is as twice as fiest line

public class TestForm : Form { protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); IntPtr hDc = e.Graphics.GetHdc(); // create a font from default Form.Font (Microsoft Sans Serif, 8.25pt), size = 8.25 Gdi.Font font = new Gdi.Font(this.Font); IntPtr oldFont = SelectObject(hDc, font.Handle); string test1 = "1. This is drawing by GDI with GdiFont"; TextOut(hDc, 50, 50, test1, test1.Length); SelectObject(hDc, oldFont); // here I want to a font which size is as twice as current's Drawing.Gdi.Font font2 = new Drawing.Gdi.Font(font, 2 * font.Size); oldFont = SelectObject(hDc, font2.Handle); string test2 = "2. This is drawing by GDI with GdiFont"; TextOut(hDc, 50, 100, test2, test2.Length); font.Dispose(); font2.Dispose(); SelectObject(hDc, oldFont); e.Graphics.ReleaseHdc(hDc); } [DllImport("gdi32.dll", EntryPoint = "SelectObject")] public static extern IntPtr SelectObject( IntPtr hdc, IntPtr hObject ); [DllImport("gdi32.dll", EntryPoint = "TextOut")] public static extern int TextOut( IntPtr hdc, int x, int y, string lpString, int nCount ); }

Example

public class TestForm : Form 
{
   protected override void OnPaint(PaintEventArgs e)
   {
     base.OnPaint(e);
            
     IntPtr hDc = e.Graphics.GetHdc();
     // create a font from default Form.Font (Microsoft Sans Serif, 8.25pt), size = 8.25
     Gdi.Font font = new Gdi.Font(this.Font);
     IntPtr oldFont = SelectObject(hDc, font.Handle);
     string test1 = "1. This is drawing by GDI with GdiFont";
     TextOut(hDc, 50, 50, test1, test1.Length);
     SelectObject(hDc, oldFont);
            
     // here I want to a font which size is as twice as current's
     Drawing.Gdi.Font font2 = new Drawing.Gdi.Font(font, 2 * font.Size);
     oldFont = SelectObject(hDc, font2.Handle);
     string test2 = "2. This is drawing by GDI with GdiFont";
     TextOut(hDc, 50, 100, test2, test2.Length);
     font.Dispose();
     font2.Dispose();
     SelectObject(hDc, oldFont);
     e.Graphics.ReleaseHdc(hDc);
   }
             
   [DllImport("gdi32.dll", EntryPoint = "SelectObject")]
   public static extern IntPtr SelectObject(
        IntPtr hdc,
        IntPtr hObject
        );
            
   [DllImport("gdi32.dll", EntryPoint = "TextOut")]
   public static extern int TextOut(
        IntPtr hdc,
        int x,
        int y,
        string lpString,
        int nCount
    );
}

Reference

Font Class
Font Members
Overload List