[原创]C#按比例缩放窗体控件及字体

按照比例缩放窗体控件及字体，如需等比例缩放，只需将x，y的比例设置成相同即可。

为了减小误差，建议使用原始尺寸来计算比例。

 private float X, Y;
 
         private bool b = false;
 
         public MainForm()
         {
             InitializeComponent();
 
             X = this.Width;
             Y = this.Height;
 
             SetTag(this);
 
             b = true;
         }
 
         protected override void OnSizeChanged(EventArgs e)
         {
             if (!b) return;
 
             float newx = (this.Width) / X;
             float newy = this.Height / Y;
             SetControls(newx, newx, this);
 
             base.OnSizeChanged(e);
         }
 
         /// <summary>
         /// 存储原始控件参数
         /// </summary>
         /// <param name="cons"></param>
         private void SetTag(Control cons)
         {
             foreach (Control con in cons.Controls)
             {
                 con.Tag = con.Width + ":" + con.Height + ":" + con.Left + ":" + con.Top + ":" + con.Font.Size;
                 if (con.Controls.Count > )
                     SetTag(con);
             }
         }
 
         /// <summary>
         /// 按照比例缩放控件大小及字体
         /// </summary>
         /// <param name="newx"></param>
         /// <param name="newy"></param>
         /// <param name="cons"></param>
         private void SetControls(float newx, float newy, Control cons)
         {
             foreach (Control con in cons.Controls)
             {
                 string[] mytag = con.Tag.ToString().Split(new char[] { ':' });
                 int width = (int)(Convert.ToSingle(mytag[]) * newx);
                 int height = (int)(Convert.ToSingle(mytag[]) * newy);
                 int x = (int)(Convert.ToSingle(mytag[]) * newx);
                 int y = (int)(Convert.ToSingle(mytag[]) * newy);
                 con.Location = new Point(x, y);
                 con.Size = new System.Drawing.Size(width, height);
                 Single currentSize = Convert.ToSingle(mytag[]) * newy;
                 con.Font = new Font(con.Font.Name, currentSize, con.Font.Style, con.Font.Unit);
 
                 if (con.Controls.Count > )
                 {
                     SetControls(newx, newy, con);
                 }
             }
         }

代码