半角全角转换

 1 class controlIme
 2     {
 3         //声明一些API函数
 4         [DllImport("imm32.dll")]
 5         public static extern IntPtr ImmGetContext(IntPtr Hwnd);
 6         [DllImport("imm32.dll")]
 7         public static extern bool ImmGetOpenStatus(IntPtr Himc);
 8         [DllImport("imm32.dll")]
 9         public static extern bool ImmSetOpenStatus(IntPtr Himc, bool b1);
10         [DllImport("imm32.dll")]
11         public static extern bool ImmGetConversionStatus(IntPtr Himc, ref int lp, ref int lp2);
12         [DllImport("imm32.dll")]
13         public static extern int ImmSimulateHotKey(IntPtr Hwnd, int lnHotkey);
14         public const int IME_CMODE_FULLSHAPE = 0x8;
15         public const int IME_CHOTKEY_SHAPE_TOGGLE = 0x11;
16 
17         public static void SetIme(Control ctl)
18         {
19             ChangeControl(ctl);
20         }
21 
22         private static void ChangeControl(Control ctl)
23         {
24             //在控件的Click事件中触发来调整输入法状态
25             ctl.Click += new EventHandler(ctl_Click);
26         }
27 
28         //控件的Click处理程序
29         public static void ctl_Click(object sender, EventArgs e)
30         {
31             ChangeControlIState(sender);
32         }
33         private static void ChangeControlIState(object sender)
34         {
35             Control ctl = (Control)sender;
36             ChangeControlIState(ctl.Handle);
37         }
38 
39         //检查输入法的全角半角状态
40         public static void ChangeControlIState(IntPtr h)
41         {
42             IntPtr HIme = ImmGetContext(h);
43             if (ImmGetOpenStatus(HIme))  //如果输入法处于打开状态
44             {
45                 int iMode = 0;
46                 int iSentence = 0;
47                 bool bSuccess = ImmGetConversionStatus(HIme, ref iMode, ref iSentence);  //检索输入法信息
48                 if (bSuccess)
49                 {
50                     if ((iMode & IME_CMODE_FULLSHAPE) > 0)   //如果是全角
51                     {
52                         iMode &= (~IME_CMODE_FULLSHAPE);
53                         ImmSimulateHotKey(h, IME_CHOTKEY_SHAPE_TOGGLE);    //转换成半角
54                     }
55                     else
56                     {
57                         ImmSimulateHotKey(h, IME_CHOTKEY_SHAPE_TOGGLE);    //转换成全角
58                     }
59                 }
60             }
61         }
62     }

下面是窗体代码：

 1  public partial class Form1 : Form
 2     {
 3         public Form1()
 4         {
 5             InitializeComponent();
 6         }
 7         #region 加载窗体时，焦点默认处于TextBox1上
 8         private void Form1_Load(object sender, EventArgs e)
 9         {
10             textBox1.Focus();
11         }
12         #endregion
13 
14         #region 全角与半角互相切换
15         private void button1_Click(object sender, EventArgs e)
16         {
17             bool flag = false;
18             textBox1.Focus();
19             controlIme.SetIme(textBox1);
20             controlIme.ctl_Click(textBox1, e);
21             textBox1.Focus();
22             if (button1.Text == "半角")
23             {
24                 button1.Text = "全角";
25                 flag = true;
26             }
27             if (flag == false)
28             {
29                 if (button1.Text == "全角")
30                 {
31                     button1.Text = "半角";
32                 }
33             }
34         }
35         #endregion
36     }

效果图：

转载于:https://www.cnblogs.com/ziranquliu/p/4722661.html