自動啟動多媒體光盤技術應用十分廣泛，現在的光盤大多應用這些技術，減少用戶單擊進入的時間。
027 自動啟動的多媒體光盤程序
實現光盤的自動運行非常簡單，當用戶打開自動運行的光盤時，會發現光盤中有幾個特殊的文件，分別為 "autorun.exe"、"run.ico" 和 "autorun.inf"，其中 "autorun.exe" 是光盤自動播放時執行的可執行文件，"run.ico" 是光盤的圖標，"autorun.inf" 是一個 INI 文件。只要光盤中包含這些文件，那麼在將光盤放入光驅時，就會自動運行。
1.創建一個項目，默認窗體為 Form1，向 Form1 窗體中添加 Button 控件。
2.運行程序，將可執行文件命名為 "autorun.exe"，該文件就是光盤自動播放時打開的文件。
3.選擇一個圖標，命名為 "run.ico"，該圖標將在光驅讀盤時顯示。
4.在刻錄光盤時，同時將上面的 "autorun.exe"、"run.ico" 和 "autorun.inf" 3個文件刻錄到光盤中。
namespace _027_AutoRun
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//定義一個以一種特定的編碼向流中寫入字符的對象
StreamWriter sw = new StreamWriter("AutoRun.inf", false);
sw.WriteLine("[autorun]");
sw.WriteLine("OPEN=AUTORUN.EXE");
sw.WriteLine("ICON=run.ICO");
sw.Close(); //關閉當前的StreamWrite對象和基礎流
}
}
}
028 為觸摸屏程序添加虛擬鍵盤
本例中用到 Lable 控件的透明屬性和字符串截取技術，主要使用 Substring 方法。
1.創建一個項目，默認窗體為 Form1，向 Form1 窗體中添加兩個 Panel 控件、一個 TextBox 控件和多個 Label 控件，每個 Label 控件對應背景圖片上的一個按鈕。
2.為 Panel 控件添加背景圖片，並將 Label 控件的 BackColor 屬性設置為透明，AutoSize 屬性設置為 False。
namespace _028_TouchKey
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
//處理Label的不包含事件數據的事件方法
lbl_0.Click += new EventHandler(lbl_Click);
lbl_1.Click += new EventHandler(lbl_Click);
lbl_2.Click += new EventHandler(lbl_Click);
lbl_3.Click += new EventHandler(lbl_Click);
lbl_4.Click += new EventHandler(lbl_Click);
lbl_5.Click += new EventHandler(lbl_Click);
lbl_6.Click += new EventHandler(lbl_Click);
lbl_7.Click += new EventHandler(lbl_Click);
lbl_8.Click += new EventHandler(lbl_Click);
lbl_9.Click += new EventHandler(lbl_Click);
lbl_Q.Click += new EventHandler(lbl_Click);
lbl_W.Click += new EventHandler(lbl_Click);
lbl_R.Click += new EventHandler(lbl_Click);
lbl_E.Click += new EventHandler(lbl_Click);
lbl_T.Click += new EventHandler(lbl_Click);
lbl_Y.Click += new EventHandler(lbl_Click);
lbl_U.Click += new EventHandler(lbl_Click);
lbl_I.Click += new EventHandler(lbl_Click);
lbl_O.Click += new EventHandler(lbl_Click);
lbl_P.Click += new EventHandler(lbl_Click);
lbl_A.Click += new EventHandler(lbl_Click);
lbl_S.Click += new EventHandler(lbl_Click);
lbl_D.Click += new EventHandler(lbl_Click);
lbl_F.Click += new EventHandler(lbl_Click);
lbl_G.Click += new EventHandler(lbl_Click);
lbl_H.Click += new EventHandler(lbl_Click);
lbl_J.Click += new EventHandler(lbl_Click);
lbl_K.Click += new EventHandler(lbl_Click);
lbl_L.Click += new EventHandler(lbl_Click);
lbl_Z.Click += new EventHandler(lbl_Click);
lbl_X.Click += new EventHandler(lbl_Click);
lbl_C.Click += new EventHandler(lbl_Click);
lbl_V.Click += new EventHandler(lbl_Click);
lbl_B.Click += new EventHandler(lbl_Click);
lbl_N.Click += new EventHandler(lbl_Click);
lbl_M.Click += new EventHandler(lbl_Click);
label44.Click += new EventHandler(label44_Click);
}
private void label44_Click(object sender, EventArgs e)
{
if (textBox1.Text.Length > 0)
{
Label l = (Label)sender;
textBox1.Text = textBox1.Text.Substring(0, textBox1.Text.Length - 1);
textBox1.SelectionStart = textBox1.Text.Length;
}
}
void lbl_Click(object sender, EventArgs e)
{
Label l = (Label)sender; //定義一個Label型的變量l
textBox1.Text += l.Name.Substring(4, 1); //為textBox1賦值
textBox1.SelectionStart = textBox1.Text.Length; //設置文本框中選定文本的起始點
}
private void label1_Click(object sender, EventArgs e)
{
Close();
}
}
}
