// 南京千里独行 2005-3-17
///
1<summary>
2 /// 进度信息处理委托
3 /// </summary>
///
1<param name="CompletedStep" type="int"/>
已经完成的步骤数 ///
1<param name="TotalStep" type="int"/>
总的步骤数 public delegate void ProgressHandler( int CompletedStep , int TotalStep );
///
1<summary>
2 /// 通用函数集合
3 /// </summary>
public class YYFCommon { ///
1<summary>
2 /// 向指定URL使用POST方法发送数据的例程,本函数不进行错误处理
3 /// </summary>
///
1<param name="strURL"/>
URL字符串 ///
1<param name="bytSend"/>
要发送的二进制数据 ///
1<param name="SendProgress"/>
发送数据时的进度处理 ///
1<param name="AcceptProgress"/>
接受数据时的进度处理 ///
1<returns>接受到的二进制数据</returns>
public static byte[] HttpPostData( string strURL , byte[] bytSend , ProgressHandler SendProgress , ProgressHandler AcceptProgress ) { // 发送数据 System.Net.HttpWebRequest myReq =(System.Net.HttpWebRequest) System.Net.WebRequest.Create( strURL ); myReq.Method = "POST" ; System.IO.Stream myStream = myReq.GetRequestStream(); int iCount = 0 ; if( SendProgress != null) SendProgress( 0 , bytSend.Length ); while( iCount < bytSend.Length ) { if( iCount + 1024 > bytSend.Length) { myStream.Write(bytSend, iCount , bytSend.Length - iCount ); iCount = bytSend.Length ; } else { myStream.Write(bytSend , iCount , 1024); iCount += 1024; } if( SendProgress != null) SendProgress( iCount , bytSend.Length ); }//while if( SendProgress != null) SendProgress( bytSend.Length , bytSend.Length ); myStream.Close();
// 接受数据
System.Net.HttpWebResponse myRes = null;
myRes = myReq.GetResponse() as System.Net.HttpWebResponse ;
myStream = myRes.GetResponseStream();
System.IO.MemoryStream myBuf = new System.IO.MemoryStream(1024);
byte[] bytBuf = new byte[1024];
int ContentLength = (int)myRes.ContentLength ;
int AcceptLength = 0 ;
if( AcceptProgress != null)
AcceptProgress(0 , ContentLength );
while(true)
{
int iLen = myStream.Read(bytBuf,0,1024);
if(iLen ==0)
break;
myBuf.Write(bytBuf,0,iLen);
AcceptLength += iLen ;
if( AcceptLength > ContentLength )
ContentLength = AcceptLength ;
if( AcceptProgress != null)
AcceptProgress( AcceptLength , ContentLength );
}//while
if( AcceptProgress != null)
AcceptProgress( AcceptLength , ContentLength );
myStream.Close();
myRes.Close();
myReq.Abort();
byte[] bytReturn = myBuf.ToArray();
myBuf.Close();
return bytReturn ;
}// public static byte[] HttpPostData()
///
1<summary>
2 /// 根据保存在一个列表中的数据源参数修正字符串
3 /// </summary>
///
1<param name="strText"/>
供处理的原始字符串 ///
1<param name="strHead"/>
标记的头字符串 ///
1<param name="strEnd"/>
标记尾字符串 ///
1<param name="myKeys"/>
保存所有参数的列表 ///
1<returns>处理后的字符串</returns>
public static string fixVariableString ( string strText, string strHead, string strEnd, System.Collections.Hashtable myKeys ) { // 若原始字符串无效或者没有任何可用的参数则退出函数 if( strText == null || strHead == null || strEnd == null || strHead.Length == 0 || strEnd.Length == 0 || strText.Length == 0 || myKeys == null || myKeys.Count == 0 ) return strText ;
int index = strText.IndexOf( strHead );
// 若原始字符串没有变量标记则退出函数
if(index < 0 )
return strText ;
string strKey ;
int index2 ;
int LastIndex = 0 ;
System.Text.StringBuilder myStr = new System.Text.StringBuilder();
do
{
// 查找有 "[内容]" 样式的子字符串
// 若没有找到 "[" 和 "]"的字符对则退出循环
index2 = strText.IndexOf( strEnd , index + 1 );
if(index2 > index)
{
// 若 "[" 符号后面出现 "]"符号则存在 "[]"字符对
// 修正查找结果以保证 "[]"字符对中不出现字符 "["
int index3 = index ;
do
{
index = index3 ;
index3 = strText.IndexOf(strHead, index3 + 1 );
}while( index3 > index && index3 < index2 ) ;
// 获得字符对夹着的子字符串,该子字符串为参数名
// 若该参数名有效则向输出结果输出参数值
// 否则不进行额外的处理
strKey = strText.Substring(index + strHead.Length , index2 - index - strHead.Length );
if( myKeys.ContainsKey( strKey ))
{
if(LastIndex < index)
{
myStr.Append( strText.Substring(LastIndex, index - LastIndex ));
}
myStr.Append( myKeys[strKey] as string );
index = index2 + strEnd.Length ;
LastIndex = index ;
}
else
index = index2 + strEnd.Length ;
}
else
{
break;
}
}while( index >=0 && index < strText.Length );
// 添加处理过后剩余的字符串
if(LastIndex < strText.Length )
myStr.Append( strText.Substring(LastIndex));
return myStr.ToString();
}// End of function : fixVariableString
///
1<summary>
2 /// 计算指定矩形的拖拽控制矩形
3 /// </summary>
///
1<param name="myRect"/>
主矩形区域 ///
1<param name="DragRectSize"/>
拖拽矩形的大小 ///
1<param name="InnerDragRect"/>
拖拽矩形是否在主矩形内部,若为false则拖拽矩形外翻 ///
1<remarks>
2 /// 拖拽矩形主要用于有用户参与的图形化用户界面,在一个矩形区域的的4个顶点和边框中间点共有8个控制点
3 /// 用户使用鼠标拖拽操作来拖动这8个控制点可以用于改变矩形区域的位置和大小,这些控制点可以在区域区域的内部,
4 /// 也可在矩形区域的外部,拖拽矩形有8个,分别编号从0至7
5 /// <pre>
6 /// 内拖拽矩形
7 /// ┌─────────────────┐
8 /// │■0 1■ 2■│
9 /// │ │
10 /// │ │
11 /// │ │
12 /// │ │
13 /// │■7 3■│
14 /// │ │
15 /// │ │
16 /// │ │
17 /// │ │
18 /// │■6 5■ 4■│
19 /// └─────────────────┘
20 ///
21 /// 外拖拽矩形
22 ///
23 /// ■ ■ ■
24 /// ┌────────────────┐
25 /// │0 1 2│
26 /// │ │
27 /// │ │
28 /// │ │
29 /// │ │
30 /// ■│7 3│■
31 /// │ │
32 /// │ │
33 /// │ │
34 /// │ │
35 /// │6 5 4 │
36 /// └────────────────┘
37 /// ■ ■ ■
38 /// </pre>
39 /// </remarks>
///
1<returns>拖拽矩形的数组,有8个元素</returns>
public static System.Drawing.Rectangle[] GetDragRects(System.Drawing.Rectangle myRect , int DragRectSize , bool InnerDragRect) { System.Drawing.Rectangle[] DragRects = new System.Drawing.Rectangle[8]; if( InnerDragRect) { DragRects[0] = new System.Drawing.Rectangle( myRect.X , myRect.Y , DragRectSize , DragRectSize ); DragRects[1] = new System.Drawing.Rectangle( myRect.X + (int)((myRect.Width - DragRectSize)/2) , myRect.Y , DragRectSize , DragRectSize ); DragRects[2] = new System.Drawing.Rectangle( myRect.Right - DragRectSize , myRect.Y , DragRectSize , DragRectSize ); DragRects[3] = new System.Drawing.Rectangle( myRect.Right - DragRectSize , myRect.Y + (int)(( myRect.Height - DragRectSize)/2) , DragRectSize , DragRectSize ); DragRects[4] = new System.Drawing.Rectangle( myRect.Right - DragRectSize , myRect.Bottom - DragRectSize , DragRectSize , DragRectSize ); DragRects[5] = new System.Drawing.Rectangle( myRect.X + (int)((myRect.Width - DragRectSize)/2) , myRect.Bottom - DragRectSize , DragRectSize , DragRectSize ); DragRects[6] = new System.Drawing.Rectangle( myRect.X , myRect.Bottom - DragRectSize , DragRectSize , DragRectSize ); DragRects[7] = new System.Drawing.Rectangle( myRect.X , myRect.Y + (int)(( myRect.Height - DragRectSize)/2 ) , DragRectSize , DragRectSize ); } else { DragRects[0] = new System.Drawing.Rectangle( myRect.X - DragRectSize , myRect.Y - DragRectSize , DragRectSize , DragRectSize ); DragRects[1] = new System.Drawing.Rectangle( myRect.X + (int)((myRect.Width - DragRectSize)/2) , myRect.Y - DragRectSize , DragRectSize , DragRectSize ); DragRects[2] = new System.Drawing.Rectangle( myRect.Right , myRect.Y - DragRectSize , DragRectSize , DragRectSize ); DragRects[3] = new System.Drawing.Rectangle( myRect.Right , myRect.Y + (int)(( myRect.Height - DragRectSize)/2) , DragRectSize , DragRectSize ); DragRects[4] = new System.Drawing.Rectangle( myRect.Right , myRect.Bottom , DragRectSize , DragRectSize ); DragRects[5] = new System.Drawing.Rectangle( myRect.X + (int)((myRect.Width - DragRectSize)/2) , myRect.Bottom , DragRectSize , DragRectSize ); DragRects[6] = new System.Drawing.Rectangle( myRect.X - DragRectSize , myRect.Bottom , DragRectSize , DragRectSize ); DragRects[7] = new System.Drawing.Rectangle( myRect.X - DragRectSize , myRect.Y + (int)(( myRect.Height - DragRectSize)/2 ) , DragRectSize , DragRectSize ); } return DragRects ; }
///
1<summary>
2 /// 计算拖拉矩形上的鼠标光标位置
3 /// </summary>
///
1<remarks>
2 /// 鼠标设置如下
3 /// 西北-东南 南北 东北-西南
4 /// ■ ■ ■
5 /// ┌────────────────┐
6 /// │0 1 2│
7 /// │ │
8 /// │ │
9 /// │ │
10 /// │ │
11 /// ■│7 西-南 3│■ 西-南
12 /// │ │
13 /// │ │
14 /// │ │
15 /// │ │
16 /// │6 5 4 │
17 /// └────────────────┘
18 /// ■ ■ ■
19 /// 东北-西南 南北 西北-东南
20 /// </remarks>
///
1<param name="index"/>
拖拽矩形的序号,从0至7 ///
1<returns>鼠标光标对象,若序号小于0或大于7则返回空引用</returns>
public static System.Windows.Forms.Cursor GetDragRectCursor( int index ) { switch(index) { case 0: return System.Windows.Forms.Cursors.SizeNWSE ; case 1: return System.Windows.Forms.Cursors.SizeNS ; case 2: return System.Windows.Forms.Cursors.SizeNESW ; case 3: return System.Windows.Forms.Cursors.SizeWE ; case 4: return System.Windows.Forms.Cursors.SizeNWSE ; case 5: return System.Windows.Forms.Cursors.SizeNS ; case 6: return System.Windows.Forms.Cursors.SizeNESW ; case 7: return System.Windows.Forms.Cursors.SizeWE ; } return null; } }
///
1<summary>
2 /// 操作系统剪切板处理模块,提供的方法为静态函数
3 /// </summary>
///
1<example>
2 /// C#语言中使用该类的例子,从操作系统剪切板获得纯文本数据
3 /// // 判断操作系统剪切板是否保存了纯文本数据
4 /// if( ClipboardHandler.CanGetText())
5 /// {
6 /// // 返回获得的纯文本数据
7 /// return ClipboardHandler.GetTextFromClipboard();
8 /// }
9 ///
10 /// 向操作系统剪切板设置纯文本数据
11 /// string strText = "要设置的纯文本数据";
12 /// ClipboardHandler.SetTextToClipboard( strText );
13 /// </example>
public class ClipboardHandler {
///
1<summary>
2 /// 是否可以从操作系统剪切板获得文本
3 /// </summary>
///
1<returns>true 可以从操作系统剪切板获得文本,false 不可以</returns>
public static bool CanGetText() { // Clipboard.GetDataObject may throw an exception... try { System.Windows.Forms.IDataObject data = System.Windows.Forms.Clipboard.GetDataObject(); return data != null && data.GetDataPresent(System.Windows.Forms.DataFormats.Text); } catch (Exception e) { return false; } } // // ///
1<summary>
2 // /// 是否可以向操作系统剪切板设置文本
3 // /// </summary>
// ///
1<returns></returns>
// public static bool CanSetText() // { // return true; // }
///
1<summary>
2 /// 向操作系统剪切板设置文本数据
3 /// </summary>
///
1<param name="strText"/>
文本数据 ///
1<returns>操作是否成功</returns>
public static bool SetTextToClipboard(string strText) { if ( strText != null && strText.Length > 0 ) { try { System.Windows.Forms.DataObject dataObject = new System.Windows.Forms.DataObject(); dataObject.SetData(System.Windows.Forms.DataFormats.UnicodeText , true, strText ); System.Windows.Forms.Clipboard.SetDataObject(dataObject, true); return true; } catch {
}
}
return false;
}
///
1<summary>
2 /// 从操作系统剪切板获得文本
3 /// </summary>
///
1<returns>获得的文本,若操作失败则返回空对象</returns>
public static string GetTextFromClipboard() { try { System.Windows.Forms.IDataObject data = System.Windows.Forms.Clipboard.GetDataObject(); if( data.GetDataPresent(System.Windows.Forms.DataFormats.UnicodeText)) { string strText = ( string) data.GetData( System.Windows.Forms.DataFormats.UnicodeText); return strText; } } catch {} return null; } }