IT博客-ChengKing-文章分类-C#之Control Study

Control Study -> 主表和子表数据同时在绑定控件显示

ZhengJian — Tue, 29 Nov 2005 15:25:00 GMT

(一).显示效果图

http://blog.csdn.net/ChengKing/archive/2005/11/27/538128.aspx

(二)代码

1.前台界面代码:

       <%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="数据绑定控件同时显示主表和子表数据.WebForm1" %>
<%@ Import Namespace="System.Data" %>

  WebForm1



  http://schemas.microsoft.com/intellisense/ie5">

















        <%# DataBinder.Eval(Container.DataItem,"TypeID") %>

        <%# DataBinder.Eval(Container.DataItem,"TypeName") %>













            <%# DataBinder.Eval(Container.DataItem,"[\"TypeID\"]") %>

            <%# DataBinder.Eval(Container.DataItem, "[\"TypeDetail\"]")%>

2. 后代代码

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace 数据绑定控件同时显示主表和子表数据
{
///

/// 数据绑定控件同时显示主表和子表数据
///

public class WebForm1 : System.Web.UI.Page
{
  protected System.Web.UI.WebControls.Repeater myRepeater;
  private void Page_Load(object sender, System.EventArgs e)
  {
   DataSet ds = new DataSet();

   //1.构造主表
   DataTable dtTypeParent=new DataTable();
   dtTypeParent.Columns.Add(new DataColumn("TypeID",typeof(int)));
   dtTypeParent.Columns.Add(new DataColumn("TypeName",typeof(string)));
   //给主表添加两条记录
   DataRow drParent1 = dtTypeParent.NewRow();
   drParent1["TypeID"] = 1;
   drParent1["TypeName"] = "水果";
   dtTypeParent.Rows.Add(drParent1);
   DataRow drParent2 = dtTypeParent.NewRow();
   drParent2["TypeID"] = 2;
   drParent2["TypeName"] = "玩具";
   dtTypeParent.Rows.Add(drParent2);
   dtTypeParent.TableName="TypeParent";
   dtTypeParent.PrimaryKey = new DataColumn[] {dtTypeParent.Columns["TypeID"]};
   ds.Tables.Add(dtTypeParent);

   //2.构造子表
   DataTable dtTypeChild=new DataTable();
   dtTypeChild.Columns.Add(new DataColumn("TypeID",typeof(int)));
   dtTypeChild.Columns.Add(new DataColumn("TypeDetail",typeof(string)));
   //给子表添加五条记录
   DataRow drChild1 = dtTypeChild.NewRow();
   drChild1["TypeID"] = 1;
   drChild1["TypeDetail"] = "苹果";
   dtTypeChild.Rows.Add(drChild1);
   DataRow drChild2 = dtTypeChild.NewRow();
   drChild2["TypeID"] = 1;
   drChild2["TypeDetail"] = "桔子";
   dtTypeChild.Rows.Add(drChild2);
   DataRow drChild3 = dtTypeChild.NewRow();
   drChild3["TypeID"] = 1;
   drChild3["TypeDetail"] = "香蕉";
   dtTypeChild.Rows.Add(drChild3);
   DataRow drChild4 = dtTypeChild.NewRow();
   drChild4["TypeID"] = 2;
   drChild4["TypeDetail"] = "机器人";
   dtTypeChild.Rows.Add(drChild4);
   DataRow drChild5 = dtTypeChild.NewRow();
   drChild5["TypeID"] = 2;
   drChild5["TypeDetail"] = "小汽车";
   dtTypeChild.Rows.Add(drChild5);
   dtTypeChild.TableName="TypeChild";
   ds.Tables.Add(dtTypeChild);

   ds.Relations.Add("TypeRelation",
    ds.Tables["TypeParent"].Columns["TypeID"],
    ds.Tables["TypeChild"].Columns["TypeID"]);

   myRepeater.DataSource = ds.Tables["TypeParent"];
   Page.DataBind();
  }

  #region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }

  ///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.Load += new System.EventHandler(this.Page_Load);
  }
  #endregion
}
}

(三).示例下载

http://www.cnblogs.com/Files/ChengKing/DataRalationDisplay.rar

ZhengJian 2005-11-29 23:25 发表评论

Control Study -> 自定义DataGrid翻页按钮

ZhengJian — Tue, 29 Nov 2005 15:23:00 GMT

(一).显示截图效果

http://blog.csdn.net/ChengKing/archive/2005/11/20/533551.aspx

(二).代码

1. *.aspx文件代码

         <%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="New_DataGrid自定义分页按钮.WebForm1" %>

  WebForm1



  http://schemas.microsoft.com/intellisense/ie5">

2. *.cs代码文件

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace New_DataGrid自定义分页按钮
{
///

/// DataGrid自定义分页按钮
///

public class WebForm1 : System.Web.UI.Page
{
  protected System.Web.UI.WebControls.DataGrid DataGrid1;


  private void Page_Load(object sender, System.EventArgs e)
  {
   if(!Page.IsPostBack)
   {
    GetData();        // 生成数据
    this.BindData(); // 绑定数据到DataGrid
   }
  }

///

/// 生成数据
///

  private void GetData()
  {
   DataTable table = new DataTable();
   DataColumnCollection columns = table.Columns;

   //定义结构
   columns.Add("学号",typeof(System.Int32));
   columns.Add("分数",typeof(System.Int32));

   Random myRandom = new Random();
   int intScore = 0;
   for(int i = 1;i < 101; i++)
   {
    intScore = myRandom.Next(100);
    DataRow drNew = table.NewRow();
    drNew[0] = i.ToString();
    drNew[1] = intScore.ToString();
    table.Rows.Add(drNew);
   }
   this.ViewState.Add("table",table);
  }

///

/// 绑定DataGrid
///

  private void BindData()
  {
   DataTable table = (DataTable)this.ViewState["table"];
   this.DataGrid1.DataSource = table;
   this.DataGrid1.DataBind();
  }

  #region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
   //
   // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
   //
   InitializeComponent();
   base.OnInit(e);
  }

  ///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
   this.Load += new System.EventHandler(this.Page_Load);
   this.DataGrid1.ItemCreated +=new DataGridItemEventHandler(DataGrid1_ItemCreated);

}
#endregion

  private void DataGrid1_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
  {
   try
   {
    this.DataGrid1.CurrentPageIndex = e.NewPageIndex;
   }
   catch
   {
    this.DataGrid1.CurrentPageIndex = 0;
   }
   this.BindData();
  }

  private void DataGrid1_ItemCreated(object sender, DataGridItemEventArgs e)
  {
   System.Web.UI.WebControls.ListItemType elemType = e.Item.ItemType;
   if (elemType == System.Web.UI.WebControls.ListItemType.Pager)
   {
    TableCell pager = (TableCell) e.Item.Controls[0];
    for (int i=0; i    {
     Object o = pager.Controls[i];
     if (o is LinkButton)
     {
      LinkButton h = (LinkButton) o;
      h.Text = " " + h.Text + " ";
     }
     else
     {
      Label l = (Label) o;
      l.Text = String.Format("[第{0}页]", l.Text);
     }
    }
   }
  }
}

}

(三).源代码下载(创建虚拟目录后就可以直接运行)

http://www.cnblogs.com/Files/ChengKing/自定义分页example.rar

ZhengJian 2005-11-29 23:23 发表评论

Control Study->自定义DataGrid翻页控件

ZhengJian — Tue, 29 Nov 2005 15:22:00 GMT

(一)说明

一般情况下,使用DataGrid自带的翻页按钮就能够实现所有翻页操作了，但有时候想定制自己的翻页样式

或美化其显示效果，这时可以自已写个翻页用户控件.

(二).显示效果载图

http://blog.csdn.net/ChengKing/archive/2005/11/20/533539.aspx

(三)代码

1.*.aspx代码文件:

    <%@ Page language="c#" Codebehind="DGCustomerPagination.aspx.cs" AutoEventWireup="false" Inherits="New_DataGrid自定义分页事件.WebForm1" %>

  WebForm1



  http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">

2.*.aspx.cs代码文件

namespace New_DataGrid自定义分页事件
{
///

/// DataGrid自定义分页
///

public class WebForm1 : System.Web.UI.Page
{
  protected System.Web.UI.WebControls.DataGrid DataGrid1;
  protected System.Web.UI.WebControls.LinkButton lbLastPage;
  protected System.Web.UI.WebControls.LinkButton lbNextPage;
  protected System.Web.UI.WebControls.LinkButton lbPrevPage;
  protected System.Web.UI.WebControls.LinkButton lbFirstPage;
  protected System.Web.UI.WebControls.Label lblDisplayPosition;
  protected System.Web.UI.WebControls.Button btnSelectPage;
  protected System.Web.UI.WebControls.TextBox txtSelectPage;
  protected System.Web.UI.WebControls.Label lblError;
  protected System.Web.UI.WebControls.Button Button1;

  protected System.Web.UI.WebControls.Label lbTotal; //显示记录总数
  private static int intRecord = 0;   //显示总记录数

  private void Page_Load(object sender, System.EventArgs e)
  {
   this.lblError.Text = "";
   if(!Page.IsPostBack)
   {
    GetData(); // 生成数据
    this.BindData(); //绑定数据到DataGrid
    DisPlayStats();   //显示这样的表示: 2/100 意思是:共100页，当前为第二页
   }
  }

///

/// 生成数据
///

  private void GetData()
  {
   DataTable table = new DataTable();
   DataColumnCollection columns = table.Columns;

   intRecord = table.Rows.Count;
   this.lbTotal.Text = "总共:"+intRecord.ToString()+"条记录";
  }

///

/// 绑定DataGrid
///

  private void BindData()
  {
   DataTable table = (DataTable)this.ViewState["table"];
   this.DataGrid1.DataSource = table;
   this.DataGrid1.DataBind();

}

///

/// 自定义控件按钮事件
///

  ///
  ///
  public void ChangePageClick(object sender, EventArgs e)
  {
   string CommandName = ((LinkButton)sender).CommandArgument.ToString();
   switch(CommandName)
   {
    case "next":
     if (DataGrid1.CurrentPageIndex < DataGrid1.PageCount - 1 )
     {
      DataGrid1.CurrentPageIndex += 1;
     }
     break;
    case "prev":
     if (DataGrid1.CurrentPageIndex > 0)
     {
      DataGrid1.CurrentPageIndex -= 1;
     }
     break;
    case "last":
     DataGrid1.CurrentPageIndex = (DataGrid1.PageCount - 1);
     break;
    default:
     DataGrid1.CurrentPageIndex = 0;
     break;
   }
   DisPlayStats();
  }

  public void DisPlayStats()
  {
   this.lblDisplayPosition.Text = (DataGrid1.CurrentPageIndex + 1).ToString() + "/";
   this.lblDisplayPosition.Text += DataGrid1.PageCount.ToString();
   this.txtSelectPage.Text = (DataGrid1.CurrentPageIndex + 1).ToString();
  }

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_PageIndexChanged);
   this.btnSelectPage.Click += new System.EventHandler(this.btnSelectPage_Click);
   this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

  private void btnSelectPage_Click(object sender, System.EventArgs e)
  {
   int intPage = 0;
   try
   {
    intPage = int.Parse(this.txtSelectPage.Text);
   }
   catch
   {
    this.lblError.Text = "只能输入数字!";
    return;
   }

   try
   {
    this.DataGrid1.CurrentPageIndex = intPage-1;
    this.BindData();
   }
   catch
   {
    this.DataGrid1.CurrentPageIndex = 0;
    this.BindData();
                this.lblError.Text = "超出页码范围!";
   }

   DisPlayStats();
  }
}
}

(四).示例源代码下载(可以直接运行)

http://www.cnblogs.com/Files/ChengKing/自定义分页example.rar

ZhengJian 2005-11-29 23:22 发表评论

用IFormatter实现>存储容器(功能:实现游戏保存和读取).

ZhengJian — Sun, 06 Nov 2005 04:44:00 GMT

(一)引言

    用using System.Runtime.Serialization命名空间中的:IFormatter实现存储容器.
    用堆栈的实现原理. 可以存储几乎.Net所有的对象.
   本实现实现用它存储Form窗体中的所有对象,包括Label/TextBox/任意类等状态值.

保存到文件中,并从文件中读取数据.

(二)代码

说明: 下面代码实现的是存储象棋游戏棋盘上的所有对象,比如: 用于保存某一时刻棋盘的位置,以及各种控件的状态值等. 读者可以用此方法来保存一些应用程序中的状态值等.

为了便于理解,把整个文件都显示出来了.主要包括两个方法: 保存(序列化)和读取(反序列)

using System;
using System.IO;
using System.Drawing;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;

namespace 智能象棋游戏
{
///

/// 功能:实现游戏保存和读取

/// 特点:不但能够恢复断点,而且还能够在相应的断点执行退旗等操作
///

public class Class6
{
     public string openFileName="..\\..\\save\\SAVA.bin";   //存储文件名
     public string saveFileName="..\\..\\save\\SAVA.bin";   //存储文件名

  public Class6()
  {

  }

  public void Save(Form2 form2)
  {
      //******序列化Form2中的数组和变量和类*******//
      IFormatter formatter=new BinaryFormatter();   //定义类,主要用此类中的两个方法来实现功能
      Stream stream=new FileStream     (this.saveFileName,FileMode.Create,FileAccess.Write,FileShare.None);

      //序列化Form2 中pictureBoxStatus数组
      formatter.Serialize(stream,form2.pictureBoxsStatus);

   //存储象棋的当前残局,各个棋子的位置等,以及各方的分数,下棋用时等
      formatter.Serialize(stream,form2.battle);
      formatter.Serialize(stream,form2.soldiers);
      formatter.Serialize(stream,form2.tempPoint);
      formatter.Serialize(stream,form2.whetherSelected);
      formatter.Serialize(stream,form2.letDown);
  formatter.Serialize(stream,form2.signRight);
      formatter.Serialize(stream,form2.start);
      formatter.Serialize(stream,form2.wrongString);
      formatter.Serialize(stream,form2.startTime);
      formatter.Serialize(stream,form2.displaystartTime);
      formatter.Serialize(stream,form2.pause);
      formatter.Serialize(stream,form2.whichFangQianZou);
      formatter.Serialize(stream,form2.pauseCount);
      formatter.Serialize(stream,form2.label3_ShanShuo);
      formatter.Serialize(stream,form2.add_Or_Not);
      formatter.Serialize(stream,form2.shanShuoVarialbe);
      formatter.Serialize(stream,form2.whoGoString);

      //序列化Form2中类Class2 a中的变量和数组;
      formatter.Serialize(stream,form2.a.GenEatGen); formatter.Serialize (stream,form2.a.have); formatter.Serialize(stream,form2.a.who); formatter.Serialize(stream,form2.a.str); formatter.Serialize(stream,form2.a.allPoint); formatter.Serialize(stream,form2.a.partPoint); formatter.Serialize(stream,form2.a.whichPicture); formatter.Serialize(stream,form2.a.rednum); formatter.Serialize(stream,form2.a.bluenum); formatter.Serialize(stream,form2.a.width); formatter.Serialize(stream,form2.a.height); formatter.Serialize(stream,form2.a.first_X); formatter.Serialize(stream,form2.a.first_Y); formatter.Serialize(stream,form2.a.blueNumTotal); formatter.Serialize(stream,form2.a.redNumTotal);


   //序列化Form2中类Class5 keyBoard中的变量
   formatter.Serialize(stream,form2.keyBoard.KeyBoardOperating);
   formatter.Serialize(stream,form2.keyBoard.MouseOperating);


   stream.Close();
  }

  public void Read(ref Form2 form2)
  {
     IFormatter formatter=new BinaryFormatter();
     Stream stream=new FileStream(this.openFileName,FileMode.Open,FileAccess.Read,FileShare.Read);

     //Form2 a=new Form2();
     Form2 a=form2;

     //反序列化Form2 中pictureBoxStatus数组
    a.pictureBoxsStatus=(bool[])formatter.Deserialize(stream);

   a.battle=(string)formatter.Deserialize(stream);
    a.soldiers=(string[])formatter.Deserialize(stream);
   a.tempPoint=(Point[])formatter.Deserialize(stream);
    a.whetherSelected=(bool)formatter.Deserialize(stream);
   a.letDown=(bool)formatter.Deserialize(stream);
   a.signRight=(int)formatter.Deserialize(stream);
   a.start=(bool)formatter.Deserialize(stream);
            a.wrongString=(string)formatter.Deserialize(stream);
   a.startTime=(DateTime)formatter.Deserialize(stream);
    a.displaystartTime=(bool)formatter.Deserialize(stream);
     a.pause=(bool)formatter.Deserialize(stream);
     a.whichFangQianZou=(bool)formatter.Deserialize(stream);
     a.pauseCount=(int)formatter.Deserialize(stream);
     a.label3_ShanShuo=(bool)formatter.Deserialize(stream);
     a.add_Or_Not=(bool)formatter.Deserialize(stream);
     a.shanShuoVarialbe=(int)formatter.Deserialize(stream);
     a.whoGoString=(string)formatter.Deserialize(stream);

     //反序列化Form2中类Class5 keyBoard中的变量
     a.keyBoard.KeyBoardOperating=(bool)formatter.Deserialize(stream);
     a.keyBoard.MouseOperating=(bool)formatter.Deserialize(stream);

   stream.Close();
}
}
}

需要注意的一点时，在往容器里存储和从容器里读取时，要按照椎栈的原理进行存储和读取.

遵守“先进后出，后进先出原则”。

即先放到容器里的对象，在读取时到最后才能读取出来.最后存储的对象，在读取时第一个被读取出来.

ZhengJian 2005-11-06 12:44 发表评论

Control Study -> 用Process调用其它应用程序

ZhengJian — Sun, 06 Nov 2005 04:38:00 GMT

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Diagnostics;

namespace WindowsApplication3
{
///

/// Form1 的摘要说明。
///

public class Form1 : System.Windows.Forms.Form
{
private System.ComponentModel.IContainer components;

  private System.Diagnostics.Process process;
  private System.Windows.Forms.Button button1;
  //Form2 a;
  //Graphics g=pictureBox1.CreateGraphics();
  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

///

/// 清理所有正在使用的资源。
///

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

#region Windows 窗体设计器生成的代码
///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.button1 = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(136, 144);
   this.button1.Name = "button1";
   this.button1.TabIndex = 0;
   this.button1.Text = "button1";
   this.button1.Click += new System.EventHandler(this.button1_Click_1);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(344, 302);
   this.Controls.Add(this.button1);
   this.HelpButton = true;
   this.Name = "Form1";
   this.Text = "Form1";
   this.HelpRequested += new System.Windows.Forms.HelpEventHandler(this.Form1_HelpRequested);
   this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
   this.ResumeLayout(false);

}
#endregion

///

/// 应用程序的主入口点。
///

  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }

  private void Form1_HelpRequested(object sender, System.Windows.Forms.HelpEventArgs hlpevent)
  {

  }

private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{

}

  private void button1_Click_1(object sender, System.EventArgs e)
  {
   process=new Process();
   process.StartInfo.FileName="skate.exe";
   //process.StartInfo.FileName=@"F:\c#\拼图游戏2\bin\Release\拼图游戏2.exe";
   this.process.Start();
  }

  private void pictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
  {

  }
}
}

ZhengJian 2005-11-06 12:38 发表评论

Control study -> Drag拖放事件示例

ZhengJian — Sun, 06 Nov 2005 04:38:00 GMT

(一).功能描述

涉及到DragEnter DragDrop DragLeave DragOver QueryContinueDrag事件用法的一个例子

(二).代码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace 拖放数据操作_按键事件_
{
///

/// Form1 的摘要说明。
///

public class Form1 : System.Windows.Forms.Form
{
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.TextBox textBox1;
  ///

/// 必需的设计器变量。
///

private System.ComponentModel.Container components = null;

  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

///

/// 清理所有正在使用的资源。
///

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

#region Windows 窗体设计器生成的代码
///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.button1 = new System.Windows.Forms.Button();
   this.textBox1 = new System.Windows.Forms.TextBox();
   this.SuspendLayout();
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(112, 72);
   this.button1.Name = "button1";
   this.button1.TabIndex = 0;
   this.button1.Text = "button1";
   this.button1.QueryContinueDrag += new System.Windows.Forms.QueryContinueDragEventHandler(this.button1_QueryContinueDrag);
   this.button1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.button1_MouseDown);
   //
   // textBox1
   //
   this.textBox1.AccessibleDescription = "aaaaa";
   this.textBox1.AccessibleName = "bbbbbb";
   this.textBox1.AllowDrop = true;
   this.textBox1.Location = new System.Drawing.Point(64, 160);
   this.textBox1.Multiline = true;
   this.textBox1.Name = "textBox1";
   this.textBox1.Size = new System.Drawing.Size(168, 48);
   this.textBox1.TabIndex = 1;
   this.textBox1.Text = "";
   this.textBox1.DragOver += new System.Windows.Forms.DragEventHandler(this.textBox1_DragOver);
   this.textBox1.DragDrop += new System.Windows.Forms.DragEventHandler(this.textBox1_DragDrop);
   this.textBox1.DragEnter += new System.Windows.Forms.DragEventHandler(this.textBox1_DragEnter);
   this.textBox1.DragLeave += new System.EventHandler(this.textBox1_DragLeave);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(292, 266);
   this.Controls.Add(this.textBox1);
   this.Controls.Add(this.button1);
   this.Name = "Form1";
   this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
   this.Text = "Form1";
   this.ResumeLayout(false);

}
#endregion

///

/// 应用程序的主入口点。
///

  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }

  private void button1_QueryContinueDrag(object sender, System.Windows.Forms.QueryContinueDragEventArgs e)
  {
   if(e.EscapePressed)
    e.Action=DragAction.Cancel;
  }

  private void button1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   button1.DoDragDrop(button1.Text,DragDropEffects.Copy|DragDropEffects.Move);
  }

  private void textBox1_DragEnter(object sender, System.Windows.Forms.DragEventArgs e)
  {
   if(e.Data.GetDataPresent(DataFormats.Text))
    e.Effect=DragDropEffects.Copy;
   else
    e.Effect=DragDropEffects.None;
  }

  private void textBox1_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
  {
   //使用KeyState属性
   if((e.KeyState&(1<<3))!=0)
   {
    if((e.AllowedEffect&DragDropEffects.Copy)!=0)
    {
     e.Effect=DragDropEffects.Copy;
     textBox1.Text=e.Data.GetData(DataFormats.Text).ToString();
    }
   }
   else
   {
    e.Effect=DragDropEffects.Move;
    textBox1.Text=e.Data.GetData(DataFormats.Text).ToString();
   }
  }

  private void textBox1_DragLeave(object sender, System.EventArgs e)
  {
   textBox1.Text="执行 DragLeave";
  }

  private void textBox1_DragOver(object sender, System.Windows.Forms.DragEventArgs e)
  {
   textBox1.Text="执行 DragOver";
  }
}
}

ZhengJian 2005-11-06 12:38 发表评论

Control Study -> 实现:用鼠标拖动图片

ZhengJian — Sun, 06 Nov 2005 04:37:00 GMT

(一).说明

功能:用鼠标实现拖动图片.
用法:将鼠标指向一图片,按住鼠标左键拖动. 图片会随鼠标一起移动.

(二).代码

(说明: 此功能我用的用途是将象棋游戏之棋子拖动效果)

读者可以将此功能用作其它用途,也可以用作设计其它的游戏.

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;

namespace 拖动图片
{
///

/// Form1 的摘要说明。
///

public class Form1 : System.Windows.Forms.Form
{
  public System.Windows.Forms.PictureBox[] pictureBox=new PictureBox[2];
  //private System.Windows.Forms.PictureBox pictureBox2;
  ///

/// 必需的设计器变量。
///

private System.ComponentModel.Container components = null;

  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();
   for(int i=0;i<2;i++)
   {
    this.pictureBox[i].MouseUp += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseUp);
    this.pictureBox[i].MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseMove);
    this.pictureBox[i].MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDown);
   }

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

///

/// 清理所有正在使用的资源。
///

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

#region Windows Form Designer generated code
///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
   this.SuspendLayout();
   this.pictureBox[0] = new System.Windows.Forms.PictureBox();
   this.pictureBox[1] = new System.Windows.Forms.PictureBox();

   //
   // pictureBox1
   //
   this.pictureBox[0].BackColor = System.Drawing.Color.Transparent;
   this.pictureBox[0].Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));
   this.pictureBox[0].Location = new System.Drawing.Point(200, 192);
   this.pictureBox[0].Name = "pictureBox1";
   this.pictureBox[0].Size = new System.Drawing.Size(88, 72);
   this.pictureBox[0].SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
   this.pictureBox[0].TabIndex = 0;
   this.pictureBox[0].TabStop = false;
   /*this.pictureBox[1].MouseUp += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseUp);
   this.pictureBox[1].MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseMove);
   this.pictureBox[1].MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDown);*/
   //
   // pictureBox2
   //
   //this.Opacity=0.8;
   this.pictureBox[1].BackColor = System.Drawing.Color.DodgerBlue;
   this.pictureBox[1].Image = ((System.Drawing.Image)(resources.GetObject("pictureBox2.Image")));
   this.pictureBox[1].Location = new System.Drawing.Point(200, 72);
   this.pictureBox[1].Name = "pictureBox2";
   this.pictureBox[1].Size = new System.Drawing.Size(88, 64);
   this.pictureBox[1].SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
   this.pictureBox[1].TabIndex = 1;
   this.pictureBox[1].TabStop = false;
   /*this.pictureBox[2].MouseUp += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseUp);
   this.pictureBox[2].MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseMove);
   this.pictureBox[2].MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDown);
   */

   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(432, 348);
   this.Controls.Add(this.pictureBox[0]);
   this.Controls.Add(this.pictureBox[1]);
   this.Name = "Form1";
   this.Text = "Form1";
   this.ResumeLayout(false);

}
#endregion

///

/// 应用程序的主入口点。
///

  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }

bool whetherSelected=false;
Point p=new Point();

  #region 事件代码
  private void pictureBox1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
  {
                        whetherSelected=true;
   p.X=Cursor.Position.X;
   p.Y=Cursor.Position.Y;
  }

  private void pictureBox1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   whetherSelected=false;
  }

  private void pictureBox1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   if(whetherSelected==true)
   {
    //加入一个函数,得到是哪个pictureBox
    int index=-1;
    for(int i=0;i<2;i++)
     if(this.pictureBox[i].Capture)
      index=i;
    this.pictureBox[index].Left=this.pictureBox[index].Left+(Cursor.Position.X-p.X);
    this.pictureBox[index].Top=this.pictureBox[index].Top+(Cursor.Position.Y-p.Y);

                this.pictureBox[1-index].SendToBack();

    p.X=Cursor.Position.X;
    p.Y=Cursor.Position.Y;
   }
  }

#endregion

}
}

ZhengJian 2005-11-06 12:37 发表评论

Control study -> 图像格式转换如:将.jpg -> .gif进行转换

ZhengJian — Sun, 06 Nov 2005 04:36:00 GMT

(一).功能

一个演示图像格式转换的示例程序.
支持格式: bmp jpeg gif tiff png wmf 等之间的相互转换

(二).代码(整个后台代码)

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Drawing.Imaging;
namespace 图像格式转换
{
///

/// Form1 的摘要说明。
///

public class FormMain : System.Windows.Forms.Form
{
  private System.Windows.Forms.Panel panel1;
  private System.Windows.Forms.Splitter splitter1;
  private System.Windows.Forms.Panel panel2;
  private System.Windows.Forms.Button buttonOpen;
  private System.Windows.Forms.Button buttonConvert;
  private System.Windows.Forms.ComboBox comboBox;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.Label label2;
  ///

/// 必需的设计器变量。
///

  private System.ComponentModel.Container components = null;
  private System.Windows.Forms.PictureBox pictureBox;
  private System.Drawing.Bitmap bitmap;

  public FormMain()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
   bitmap=null;
   pictureBox.Width=panel2.Width;
   pictureBox.Height=panel2.Height;
   pictureBox.Top=panel1.Top;
   pictureBox.Left=panel1.Left;
   panel2.Resize+=new System.EventHandler(panel2_Resize);
   //buttonOpen.Click+=new System.EventHandler(buttonOpen_Click);
   comboBox.Items.AddRange(new object[]{
                                                    "*.jpg",
                                                    "*.bmp",
                                        "*.gif",
                                        "*.png",
                                        "*.tif",
                                        "*.wmf"
            });

  }

///

/// 清理所有正在使用的资源。
///

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

#region Windows Form Designer generated code
///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.panel1 = new System.Windows.Forms.Panel();
   this.buttonConvert = new System.Windows.Forms.Button();
   this.buttonOpen = new System.Windows.Forms.Button();
   this.comboBox = new System.Windows.Forms.ComboBox();
   this.label1 = new System.Windows.Forms.Label();
   this.label2 = new System.Windows.Forms.Label();
   this.splitter1 = new System.Windows.Forms.Splitter();
   this.panel2 = new System.Windows.Forms.Panel();
   this.pictureBox = new System.Windows.Forms.PictureBox();
   this.panel1.SuspendLayout();
   this.panel2.SuspendLayout();
   this.SuspendLayout();
   //
   // panel1
   //
   this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
   this.panel1.Controls.AddRange(new System.Windows.Forms.Control[] {
                     this.buttonConvert,
                     this.buttonOpen,
                     this.comboBox,
                     this.label1,
                     this.label2});
   this.panel1.Dock = System.Windows.Forms.DockStyle.Left;
   this.panel1.Name = "panel1";
   this.panel1.Size = new System.Drawing.Size(128, 365);
   this.panel1.TabIndex = 0;
   //
   // buttonConvert
   //
   this.buttonConvert.Location = new System.Drawing.Point(40, 264);
   this.buttonConvert.Name = "buttonConvert";
   this.buttonConvert.Size = new System.Drawing.Size(56, 24);
   this.buttonConvert.TabIndex = 1;
   this.buttonConvert.Text = "转换";
   buttonConvert.Click+=new System.EventHandler(buttonConvert_Click);
   //
   // buttonOpen
   //
   this.buttonOpen.Location = new System.Drawing.Point(32, 56);
   this.buttonOpen.Name = "buttonOpen";
   this.buttonOpen.Size = new System.Drawing.Size(64, 24);
   this.buttonOpen.TabIndex = 0;
   this.buttonOpen.Text = "打开文件";
   this.buttonOpen.Click += new System.EventHandler(this.buttonOpen_Click);
   //
   // comboBox
   //
   this.comboBox.Location = new System.Drawing.Point(64, 224);
   this.comboBox.Name = "comboBox";
   this.comboBox.Size = new System.Drawing.Size(48, 20);
   this.comboBox.TabIndex = 0;
   this.comboBox.Text = "comboBox1";
   //
   // label1
   //
   this.label1.Location = new System.Drawing.Point(24, 104);
   this.label1.Name = "label1";
   this.label1.Size = new System.Drawing.Size(80, 40);
   this.label1.TabIndex = 0;
   this.label1.Text = "label1";
   //
   // label2
   //
   this.label2.Location = new System.Drawing.Point(8, 224);
   this.label2.Name = "label2";
   this.label2.Size = new System.Drawing.Size(48, 16);
   this.label2.TabIndex = 0;
   this.label2.Text = "转换为";
   //
   // splitter1
   //
   this.splitter1.Location = new System.Drawing.Point(128, 0);
   this.splitter1.Name = "splitter1";
   this.splitter1.Size = new System.Drawing.Size(3, 365);
   this.splitter1.TabIndex = 1;
   this.splitter1.TabStop = false;
   //
   // panel2
   //
   this.panel2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
   this.panel2.Controls.AddRange(new System.Windows.Forms.Control[] {
                     this.pictureBox});
   this.panel2.Dock = System.Windows.Forms.DockStyle.Fill;
   this.panel2.Location = new System.Drawing.Point(131, 0);
   this.panel2.Name = "panel2";
   this.panel2.Size = new System.Drawing.Size(373, 365);
   this.panel2.TabIndex = 2;
   //
   // pictureBox
   //
   this.pictureBox.Dock = System.Windows.Forms.DockStyle.Fill;
   this.pictureBox.Name = "pictureBox";
   this.pictureBox.Size = new System.Drawing.Size(369, 361);
   this.pictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
   this.pictureBox.TabIndex = 0;
   this.pictureBox.TabStop = false;
   //
   // FormMain
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(504, 365);
   this.Controls.AddRange(new System.Windows.Forms.Control[] {
                    this.panel2,
                    this.splitter1,
                    this.panel1});
   this.Name = "FormMain";
   this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
   this.Text = "FormMain";
   this.panel1.ResumeLayout(false);
   this.panel2.ResumeLayout(false);
   this.ResumeLayout(false);

}
#endregion

///

/// 应用程序的主入口点。
///

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

  private void buttonOpen_Click(object sender, System.EventArgs e)
  {
   OpenFileDialog openFileDialog=new OpenFileDialog();
   openFileDialog.Filter="*.jpg,*.jpeg,*.bmp,*.gif,*.ico,*.png,*.tif,*.wmf|*.jpg;*.jpeg;*.bmp;*.gif;*.ico;*.png;*.tif;*.wmf";
   openFileDialog.Title="打开图像文件";
   openFileDialog.Multiselect=false;
   if(openFileDialog.ShowDialog()==DialogResult.OK)
   {
    if(bitmap!=null)
    {
     bitmap.Dispose();
    }
    string fileName=openFileDialog.FileName;
    bitmap=new Bitmap(fileName);
    if(bitmap.Width>bitmap.Width)
    {
     pictureBox.Width=panel2.Width;
     pictureBox.Height=(int)((double)bitmap.Height*panel2.Width/bitmap.Width);
    }
    else
    {
     pictureBox.Height=panel2.Height;
                    pictureBox.Width=(int)((double)bitmap.Width*panel2.Height/bitmap.Height);
    }
    pictureBox.Image=bitmap;
    FileInfo f=new FileInfo(fileName);
    this.Text="图象转换:"+f.Name;
    this.label1.Text=f.Name;
    buttonConvert.Enabled=true;
   }
  }
  private void panel2_Resize(object sender, System.EventArgs e)
  {
   pictureBox.Top=panel1.Top;
   pictureBox.Left=panel1.Left;
   if(bitmap!=null)
   {
    if(bitmap.Width>bitmap.Height)
    {
     pictureBox.Width=panel2.Width;
     pictureBox.Height=(int)((double) bitmap.Height*panel2.Width/bitmap.Width);
    }
    else
    {
     pictureBox.Height=panel2.Height;
     pictureBox.Width=(int)((double)bitmap.Width*panel2.Height/bitmap.Height);
    }
   }
   else
   {
    pictureBox.Width=panel2.Width;
    pictureBox.Height=panel2.Height;
   }
   pictureBox.Refresh();
  }
  private void buttonConvert_Click(object sender, System.EventArgs e)
  {
   if(comboBox.SelectedItem==null)
   {
    return;
   }
   else
   {
    SaveFileDialog saveFileDialog=new SaveFileDialog();
    saveFileDialog.Title="转化为:";
    saveFileDialog.OverwritePrompt=true;
       saveFileDialog.CheckPathExists=true;
    saveFileDialog.Filter=comboBox.Text+"|"+comboBox.Text;
    if(saveFileDialog.ShowDialog()==DialogResult.OK)
    {
     string fileName=saveFileDialog.FileName;
     switch(comboBox.Text)
     {
      case "*.bmp":
       bitmap.Save(fileName,ImageFormat.Bmp);
       break;
                        case "*.jpg":
       bitmap.Save(fileName,ImageFormat.Jpeg);
       break;
                        case "*.gif":
       bitmap.Save(fileName,ImageFormat.Gif);
       break;
                        case "*.tif":
       bitmap.Save(fileName,ImageFormat.Tiff);
       break;
                        case "*.png":
       bitmap.Save(fileName,ImageFormat.Png);
       break;
                        case "*.wmf":
       bitmap.Save(fileName,ImageFormat.Wmf);
       break;

     }
     FileInfo f=new FileInfo(fileName);
     this.Text="图像转换:"+f.Name;
     label1.Text=f.Name;
    }
   }
  }
}
}

ZhengJian 2005-11-06 12:36 发表评论

Control Study -> 模拟鼠标

ZhengJian — Sun, 06 Nov 2005 04:31:00 GMT

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace 模拟鼠标
{
///

/// Form1 的摘要说明。
///

public class Form1 : System.Windows.Forms.Form
{
///

/// 必需的设计器变量。
///

private System.ComponentModel.Container components = null;

  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

///

/// 清理所有正在使用的资源。
///

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

#region Windows 窗体设计器生成的代码
///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   this.pictureBox1 = new System.Windows.Forms.PictureBox();
   this.label1 = new System.Windows.Forms.Label();
   this.SuspendLayout();
   //
   // pictureBox1
   //
   this.pictureBox1.BackColor = System.Drawing.SystemColors.ActiveCaption;
   this.pictureBox1.Location = new System.Drawing.Point(88, 120);
   this.pictureBox1.Name = "pictureBox1";
   this.pictureBox1.TabIndex = 0;
   this.pictureBox1.TabStop = false;
   this.pictureBox1.KeyDown += new System.Windows.Forms.KeyEventHandler(this.pictureBox1_KeyDown);
   this.pictureBox1.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDown);
   //
   // label1
   //
   this.label1.BackColor = System.Drawing.Color.DarkOliveGreen;
   this.label1.FlatStyle = System.Windows.Forms.FlatStyle.System;
   this.label1.Location = new System.Drawing.Point(48, 208);
   this.label1.Name = "label1";
   this.label1.TabIndex = 1;
   this.label1.Text = "label1";
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(292, 266);
   this.Controls.Add(this.label1);
   this.Controls.Add(this.pictureBox1);
   this.Name = "Form1";
   this.Text = "Form1";
   this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyDown);
   this.Load += new System.EventHandler(this.Form1_Load);
   this.KeyUp += new System.Windows.Forms.KeyEventHandler(this.Form1_KeyUp);
   this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
   this.ResumeLayout(false);

}
#endregion

///

/// 应用程序的主入口点。
///

  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }
  [System.Runtime.InteropServices.DllImport("user32")]
     private static extern int mouse_event(int dwFlags,int dx,int dy,int cButtons,int dwExtraInfo);
  const int MOUSEEVENTF_MOVE=0x0001;
  const int MOUSEEVENTF_LEFTDOWN=0X0002;
  const int MOUSEEVENTF_LEFTUP=0X0004;
  const int MOUSEEVENTF_RIGHTDOWN=0X0008;
  const int MOUSEEVENTF_RIGHTUP=0X0010;
  const int MOUSEEVENTF_MIDDLEDOWN=0X0020;
  const int MOUSEEVENTF_MIDDLEUP=0X0040;
  private System.Windows.Forms.PictureBox pictureBox1;
  private System.Windows.Forms.Label label1;
  const int MOUSEEVENTF_ABSOLUTE=0X8000;

  private void Form1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   //mouse_event(MOUSEEVENTF_MOVE,-10,-10,0,0);
  }

  private void Form1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
  {
   if(e.KeyCode==Keys.Down)
    mouse_event(MOUSEEVENTF_MOVE,0,20,0,0);
   if(e.KeyCode==Keys.Up)
    mouse_event(MOUSEEVENTF_MOVE,0,-20,0,0);
   if(e.KeyCode==Keys.Left)
    mouse_event(MOUSEEVENTF_MOVE,-20,0,0,0);
   if(e.KeyCode==Keys.Right)
    mouse_event(MOUSEEVENTF_MOVE,20,0,0,0);
  }

  public void pictureBox1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
  {
   /*if(e.KeyCode==Keys.Down)
    mouse_event(MOUSEEVENTF_MOVE,0,20,0,0);
   if(e.KeyCode==Keys.Up)
    mouse_event(MOUSEEVENTF_MOVE,0,-20,0,0);
   if(e.KeyCode==Keys.Left)
    mouse_event(MOUSEEVENTF_MOVE,-20,0,0,0);
   if(e.KeyCode==Keys.Right)
    mouse_event(MOUSEEVENTF_MOVE,20,0,0,0);
    */
  }
  private void Form1_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
  {

  }

  private void pictureBox1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   if(e.Button==MouseButtons.Right)
    mouse_event(MOUSEEVENTF_MOVE,0,20,0,0);
   else
    mouse_event(MOUSEEVENTF_MOVE,0,-20,0,0);
  }

  private void Form1_Load(object sender, System.EventArgs e)
  {

  }

}
}

ZhengJian 2005-11-06 12:31 发表评论

Control Study -> 放大图像区域

ZhengJian — Sun, 06 Nov 2005 04:30:00 GMT

(一).说明

将鼠标指向一幅图片的一块区域,此区域会放大显示,变清晰.
用类: Graphics 实现.

(二).代码

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;

namespace 放大图像区域
{
///

/// Form1 的摘要说明。
///

public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.PictureBox pictureBox1;
///

/// 必需的设计器变量。
///

  private System.ComponentModel.Container components = null;
  private System.Windows.Forms.Button button1;
  //private Cursor myCursor;
  Cursor myCursor=new Cursor("..\\..\\MAGNIFY.cur"); //自定义鼠标
  Graphics g;
  Image myImage;

  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();

   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }

///

/// 清理所有正在使用的资源。
///

  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

#region Windows 窗体设计器生成的代码
///

  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  ///

  private void InitializeComponent()
  {
   System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
   this.pictureBox1 = new System.Windows.Forms.PictureBox();
   this.button1 = new System.Windows.Forms.Button();
   this.SuspendLayout();
   //
   // pictureBox1
   //
   this.pictureBox1.BackColor = System.Drawing.SystemColors.ControlText;
   this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image")));
   this.pictureBox1.Location = new System.Drawing.Point(24, 16);
   this.pictureBox1.Name = "pictureBox1";
   this.pictureBox1.Size = new System.Drawing.Size(440, 384);
   this.pictureBox1.TabIndex = 0;
   this.pictureBox1.TabStop = false;
   this.pictureBox1.MouseMove += new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseMove);
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(384, 96);
   this.button1.Name = "button1";
   this.button1.TabIndex = 1;
   this.button1.Text = "button1";
   this.button1.Click += new System.EventHandler(this.button1_Click);
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.BackColor = System.Drawing.SystemColors.InactiveCaptionText;
   this.ClientSize = new System.Drawing.Size(472, 406);
   this.Controls.Add(this.button1);
   this.Controls.Add(this.pictureBox1);
   this.Name = "Form1";
   this.Text = "Form1";
   this.Load += new System.EventHandler(this.Form1_Load);
   this.MouseMove += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseMove);
   this.ResumeLayout(false);

}
#endregion

///

/// 应用程序的主入口点。
///

  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }

  private void pictureBox1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   Cursor.Current=myCursor;
   Rectangle sourceRectangle=new Rectangle(e.X-10,e.Y-10,20,20);  //要放大的区域
   //Rectangle destRectangle=new Rectangle(e.X-20,e.Y-20,40,40);
   Rectangle destRectangle=new Rectangle(pictureBox1.Width-150,pictureBox1.Height-150,pictureBox1.Width,pictureBox1.Height);   //放大的比例
   g.DrawLine(myImage,destRectangle,sourceRectangle,GraphicsUnit.Pixel);
  }

  private void Form1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
  {
   Cursor.Current=Cursors.Default;
  }

  private void Form1_Load(object sender, System.EventArgs e)
  {
   g=this.pictureBox1.CreateGraphics();

   myImage=this.pictureBox1.Image;
  }

  private void button1_Click(object sender, System.EventArgs e)
  {
  //Graphics g=this.pictureBox1.CreateGraphics();
   Graphics g=pictureBox1.CreateGraphics();
   g.DrawLine(new Pen(Color.Red,5),20,20,50,50);
  }
}
}

ZhengJian 2005-11-06 12:30 发表评论

Control Study -> 用获取路径方法得到圆形窗体(如将: PictureBox变成圆形)

ZhengJian — Sun, 06 Nov 2005 04:30:00 GMT

(一).功能

有时候由于显示效果,需要将某个控件变一下形状.
本文举例将PictureBox[]数组变成圆形.

(二).代码

(这里说明一下,我个人将它变形是因为我用PictureBox表示象棋棋子,

由于PictureBox默认是方的, 所以得把它变成圆的)

大家可以将这个功能作为其它用途使用.

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

namespace 智能象棋游戏
{
///

/// 功能:将所有picturebox控件变为圆形
/// 特点:使旗子变圆形

///

IT博客-ChengKing-文章分类-C#之Control Study

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Control Study -> 放大图像区域

Control Study -> 用获取路径方法得到圆形窗体(如将: PictureBox变成圆形)

Control study -> 图像格式转换如:将.jpg -> .gif进行转换