用c#实现热键、Enter文本间切换、文本输入限制等功能实例

//窗体控制器
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Text.RegularExpressions;
namespace com.filamm.gui.Default
{    

class clsCtl_frmForm1    
{        

#region 变量        
//窗体句柄        
frmForm1 m_objViewer;        
#endregion

#region 构造函数        
/// <summary>        
/// 无参构造        
/// </summary>        
public clsCtl_frmForm1()        
{                    }        
/// <summary>        
/// 有参构造        
/// </summary>        
/// <param name="p_frmForm1"></param>        
public clsCtl_frmForm1(frmForm1 p_frmForm1)        
{            

this.m_objViewer = p_frmForm1;        

}      
#endregion

#region 获取或设置窗体句柄        
/// <summary>         /// 获取或设置窗体句柄        
/// </summary>        
public frmForm1 m_ObjViewer        
{            

get { return this.m_objViewer; }            
set { this.m_objViewer = value; }        

}        
#endregion

#region 初始化        
/// <summary>        
/// 初始化        
/// </summary>        
public void m_mthFrmInit()        
{            

m_mthSubscriable();        

}        
#endregion

#region 事件订阅        
/// <summary>        
/// 事件订阅        
/// </summary>        
private void m_mthSubscriable()        
{            

this.m_objViewer.txtBox1.KeyPress += new KeyPressEventHandler(m_mthNumericable);            
this.m_objViewer.Activated += new EventHandler(m_mthFrmActived);            
this.m_objViewer.Leave += new EventHandler(m_mthFrmLeave);        

}        
#endregion

#region 只能输入数字        
/// <summary>        
/// 只能输入数字        
/// </summary>        
/// <param name="sender"></param>        
/// <param name="p_eKeyPress"></param>        
public void m_mthNumericable(Object sender, System.Windows.Forms.KeyPressEventArgs p_eKeyPress)        
{            

string regPattern = @"^[0-9]*$";            

if(!Regex.IsMatch(p_eKeyPress.KeyChar.ToString(), regPattern))            
{                

p_eKeyPress.Handled = true;            

}        

}        
#endregion

#region 只能输入字母        
/// <summary>        
/// 只能输入英文字母        
/// </summary>        
/// <param name="sender"></param>        
/// <param name="p_eKeyPress"></param>        
public void m_mthEnglishable(Object sender, System.Windows.Forms.KeyPressEventArgs p_eKeyPress)        
{            

string regPattern = @"^[A-Za-z]+$";            
if (!Regex.IsMatch(p_eKeyPress.KeyChar.ToString(), regPattern))            
{                

p_eKeyPress.Handled = true;            

}        

}        
#endregion

#region 只能输入数字与字母        
/// <summary>        
/// 只能输入英文字母        
/// </summary>        
/// <param name="sender"></param>        
/// <param name="p_eKeyPress"></param>        
public void m_mthNumEngable(Object sender, System.Windows.Forms.KeyPressEventArgs p_eKeyPress)        
{            

string regPattern = @"^[A-Za-z0-9]+$";            
if (!Regex.IsMatch(p_eKeyPress.KeyChar.ToString(), regPattern))            
{                

p_eKeyPress.Handled = true;            

}        

}        
#endregion

#region 只能输入汉字        
/// <summary>        
/// 只能输入汉字        
/// </summary>        
/// <param name="sender"></param>        
/// <param name="p_eKeyPress"></param>        
public void m_mthChieseable(Object sender, System.Windows.Forms.KeyPressEventArgs p_eKeyPress)        
{            

string regPattern = @"^[\u4e00-\u9fa5]{0,}$";            
if (!Regex.IsMatch(p_eKeyPress.KeyChar.ToString(), regPattern))            
{                

p_eKeyPress.Handled = true;            

}        

}        
#endregion

#region 注册热键        
/// <summary>        
/// 注册热键        
/// </summary>        
private void m_mthFrmActived(object sender, EventArgs e)        
{            

clsHotKey.RegisterHotKey(this.m_objViewer.Handle, 100, clsHotKey.KeyModifiers.Ctrl, Keys.O);            
clsHotKey.RegisterHotKey(this.m_objViewer.Handle, 200, clsHotKey.KeyModifiers.None, Keys.Enter);        

}        
#endregion

#region 撤销热键        
/// <summary>        
/// 撤销热键        
/// </summary>        
private void m_mthFrmLeave(object sender, EventArgs e)        
{            

clsHotKey.UnregisterHotKey(this.m_objViewer.Handle, 100);      
clsHotKey.UnregisterHotKey(this.m_objViewer.Handle, 200);        

}        
#endregion

       
public void m_mthBtnValidate()        
{            

if (MessageBox.Show("确定") != DialogResult.OK)            
{                

return;            

}        

}

#region 热键事件处理        
/// <summary>        
/// 热键事件处理        
/// </summary>        
/// <param name="m"></param>        
public void m_mthWndProc(ref Message m)        
{            

const int WM_HOTKEY = 0x0312;            
switch(m.Msg)            
{                

case WM_HOTKEY:                    

switch (m.WParam.ToInt32())                    
{

case 100:                            

m_mthBtnValidate();                            
break;                        

case 200:                            

if (this.m_objViewer.ActiveControl.Parent.Equals(this.m_objViewer.panel1))                             {                                

if (this.m_ObjViewer.ActiveControl is TextBox)                                

{

if (this.m_ObjViewer.ActiveControl.Name == "textBox5")                                     {                                        

m_mthBtnValidate();                                    

}                                    

else                                    

{                                        

SendKeys.Send("{TAB}");                                    

}

}                                

} 

break;                                                         

}                            

break;                        

}    

}    
#endregion    

}

}

//clsHotKey.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace com.filamm.gui.Default
{    

class clsHotKey    
{        

#region 热键注册        
/// <summary>        
/// 热键注册        
/// </summary>        
/// <param name="hWnd"></param>        
/// <param name="id"></param>        
/// <param name="fsModifiers"></param>        
/// <param name="vk"></param>        
[DllImport("user32.dll")]        
public static extern void RegisterHotKey(IntPtr hWnd, int id, KeyModifiers fsModifiers, Keys vk);        
#endregion

#region 热键撤销        
/// <summary>        
/// 热键撤销,        
/// 如果函数执行成功，返回值不为0。        
/// 如果函数执行失败，返回值为0。要得到扩展错误信息，调用GetLastError        
/// </summary>        
/// <param name="hWnd"></param>        
/// <param name="id"></param>        
[DllImport("user32.dll")]        
public static extern void UnregisterHotKey(IntPtr hWnd, int id);        
#endregion

#region 定义辅助键        
/// <summary>        
/// 定义辅助键        
/// 定义了辅助键的名称(将数字转变为字符以便于记忆，也可去除此枚举而直接使用数值)        
/// </summary>        
[Flags()]        
public enum KeyModifiers        
{            

None = 0,            
Alt = 1,            
Ctrl = 2,            
Shift = 4,            
WindowsKey = 8        

}        
#endregion    

}

}