C# SystemInformation.CaptionButtonSize属性代码示例

//引入命名空间
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Reflection;
using System.Windows.Forms;

namespace SystemInfoBrowser
{
    public class SystemInfoBrowserForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.ListBox listBox1;
        private System.Windows.Forms.TextBox textBox1;        
        
        public SystemInfoBrowserForm()
        {
            this.SuspendLayout();
            InitForm();
            
            // Add each property of the SystemInformation class to the list box.
            Type t = typeof(System.Windows.Forms.SystemInformation);            
            PropertyInfo[] pi = t.GetProperties();            
            for( int i=0; i<pi.Length; i++ )
                listBox1.Items.Add( pi[i].Name );            
            textBox1.Text = "The SystemInformation class has "+pi.Length.ToString()+" properties.\r\n";

            // Configure the list item selected handler for the list box to invoke a 
            // method that displays the value of each property.
            listBox1.SelectedIndexChanged += new EventHandler(listBox1_SelectedIndexChanged);
            this.ResumeLayout(false);
        }
        
        private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            // Return if no list item is selected.
            if( listBox1.SelectedIndex == -1 ) return;
            // Get the property name from the list item.
            string propname = listBox1.Text;
            
            if( propname == "PowerStatus" )
            {
                // Cycle and display the values of each property of the PowerStatus property.
                textBox1.Text += "\r\nThe value of the PowerStatus property is:";                                
                Type t = typeof(System.Windows.Forms.PowerStatus);
                PropertyInfo[] pi = t.GetProperties();            
                for( int i=0; i<pi.Length; i++ )
                {
                    object propval = pi[i].GetValue(SystemInformation.PowerStatus, null);            
                    textBox1.Text += "\r\n    PowerStatus."+pi[i].Name+" is: "+propval.ToString();
                }
            }
            else
            {
                // Display the value of the selected property of the SystemInformation type.
                Type t = typeof(System.Windows.Forms.SystemInformation);
                PropertyInfo[] pi = t.GetProperties();            
                PropertyInfo prop = null;
                for( int i=0; i<pi.Length; i++ )
                    if( pi[i].Name == propname )
                    {
                        prop = pi[i];
                        break;           
                    }
                object propval = prop.GetValue(null, null);            
                textBox1.Text += "\r\nThe value of the "+propname+" property is: "+propval.ToString();
            }
        }

        private void InitForm()
        {
            // Initialize the form settings
            this.listBox1 = new System.Windows.Forms.ListBox();
            this.textBox1 = new System.Windows.Forms.TextBox();            
            this.listBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
                | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right)));
            this.listBox1.Location = new System.Drawing.Point(8, 16);
            this.listBox1.Size = new System.Drawing.Size(172, 496);
            this.listBox1.TabIndex = 0;            
            this.textBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
                | System.Windows.Forms.AnchorStyles.Right)));
            this.textBox1.Location = new System.Drawing.Point(188, 16);
            this.textBox1.Multiline = true;
            this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;           
            this.textBox1.Size = new System.Drawing.Size(420, 496);
            this.textBox1.TabIndex = 1;            
            this.ClientSize = new System.Drawing.Size(616, 525);            
            this.Controls.Add(this.textBox1);
            this.Controls.Add(this.listBox1);            
            this.Text = "Select a SystemInformation property to get the value of";                   
        }

        [STAThread]
        static void Main() 
        {
            Application.Run(new SystemInfoBrowserForm());
        }
    }
}

//引入命名空间
using System;
using System.Drawing;
using System.Windows.Forms;
   
class BetterDialog: Form
{
     public static void Main()
     {
          Application.Run(new BetterDialog());
     }
     public BetterDialog()
     {
          Menu = new MainMenu();
          Menu.MenuItems.Add("&Dialog!", new EventHandler(MenuOnClick));
     }
     void MenuOnClick(object obj, EventArgs ea)
     {
          BetterDialogBox dlg = new BetterDialogBox();
          DialogResult    dr  = dlg.ShowDialog();
   
          Console.WriteLine(dr);
     }
}
class BetterDialogBox: Form
{
     public BetterDialogBox()
     {
          Text = "Better Dialog Box";
   
          FormBorderStyle = FormBorderStyle.FixedDialog;
          ControlBox      = false;
          MaximizeBox     = false;
          MinimizeBox     = false;
          ShowInTaskbar   = false;
          StartPosition   = FormStartPosition.Manual;
          Location        = ActiveForm.Location + 
                            SystemInformation.CaptionButtonSize +
                            SystemInformation.FrameBorderSize;
   
          Button btn = new Button();
          btn.Parent   = this;
          btn.Text     = "OK";
          btn.Location = new Point(50, 50);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.OK;
   
          AcceptButton = btn;
   
          btn = new Button();
          btn.Parent   = this;
          btn.Text     = "Cancel";
          btn.Location = new Point(50, 100);
          btn.Size     = new Size (10 * Font.Height, 2 * Font.Height);
          btn.DialogResult = DialogResult.Cancel;
   
          CancelButton = btn;
     }
}