DotNet 4.8.1 build of DotNetBar
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268
PROMS/DotNetBar Source Code/TreeGX/ColumnHeader.cs
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268
PROMS/DotNetBar Source Code/TreeGX/ColumnHeader.cs
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using System;
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using System.ComponentModel;
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using System.Drawing;
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namespace DevComponents.Tree
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{
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/// <summary>Represents the node or tree ColumnHeader.</summary>
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[ToolboxItem(false)]
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public class ColumnHeader:Component
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{
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#region Private Variables
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private string m_Text="";
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private ColumnWidth m_Width=null;
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private string m_StyleNormal="";
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private string m_StyleMouseDown="";
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private string m_StyleMouseOver="";
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private string m_ColumnName="";
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private bool m_Visible=true;
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private Rectangle m_Bounds=Rectangle.Empty;
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private bool m_SizeChanged=true;
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private string m_Name="";
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internal event EventHandler HeaderSizeChanged;
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#endregion
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#region Constructor
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/// <summary>
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/// Creates new instance of the object.
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/// </summary>
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public ColumnHeader():this("")
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{
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}
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/// <summary>
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/// Creates new instance of the object and initalizes it with text.
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/// </summary>
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/// <param name="text">Text to initalize object with.</param>
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public ColumnHeader(string text)
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{
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m_Text=text;
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m_Width=new ColumnWidth();
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m_Width.WidthChanged+=new EventHandler(this.WidthChanged);
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}
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#endregion
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#region Methods
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/// <summary>
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/// Makes a copy of ColumnHeader object.
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/// </summary>
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/// <returns>Returns new instance of column header object.</returns>
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public virtual ColumnHeader Copy()
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{
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ColumnHeader c=new ColumnHeader();
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c.ColumnName=this.ColumnName;
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c.StyleMouseDown=this.StyleMouseDown;
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c.StyleMouseOver=this.StyleMouseOver;
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c.StyleNormal=this.StyleNormal;
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c.Text=this.Text;
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c.Visible=this.Visible;
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c.Width.Absolute=this.Width.Absolute;
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c.Width.Relative=this.Width.Relative;
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return c;
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}
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#endregion
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#region Properties
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/// <summary>
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/// Returns name of the column header that can be used to identify it from the code.
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/// </summary>
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[Browsable(false),Category("Design"),Description("Indicates the name used to identify column header.")]
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public string Name
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{
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get
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{
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if(this.Site!=null)
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m_Name=this.Site.Name;
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return m_Name;
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}
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set
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{
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if(this.Site!=null)
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this.Site.Name=value;
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if(value==null)
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m_Name="";
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else
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m_Name=value;
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}
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}
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/// <summary>
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/// Returns rectangle that this column occupies. If the layout has not been performed on the column the return value will be Rectangle.Empty.
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/// </summary>
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[Browsable(false)]
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public Rectangle Bounds
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{
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get {return m_Bounds;}
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}
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/// <summary>
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/// Sets the column bounds.
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/// </summary>
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internal void SetBounds(Rectangle bounds)
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{
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m_Bounds=bounds;
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}
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/// <summary>
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/// Gets the reference to the object that represents width of the column as either
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/// absolute or relative value.
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/// </summary>
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/// <remarks>
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/// Set Width using Absolute or Relative properties of ColumnWidth object.
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/// </remarks>
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/// <seealso cref="ColumnWidth.Absolute">Absolute Property (DevComponents.Tree.ColumnWidth)</seealso>
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/// <seealso cref="ColumnWidth.Relative">Relative Property (DevComponents.Tree.ColumnWidth)</seealso>
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[Browsable(true),Category("Layout"),Description("Gets or sets the width of the column."),DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
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public ColumnWidth Width
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{
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// TODO: Add Proper TypeConverter for ColumnWidth object and test design-time support
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get {return m_Width;}
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}
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/// <summary>
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/// Gets or sets the style class assigned to the column. Empty value indicates that
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/// default style is used as specified on cell's parent's control.
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/// </summary>
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/// <value>
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/// Name of the style assigned to the cell or an empty string indicating that default
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/// style setting from tree control is applied. Default is empty string.
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/// </value>
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/// <remarks>
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/// When property is set to an empty string the style setting from parent tree
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/// controls is used. ColumnStyleNormal on TreeGX control is a root style for a cell.
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/// </remarks>
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/// <seealso cref="StyleMouseDown">StyleMouseDown Property</seealso>
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/// <seealso cref="StyleMouseOver">StyleMouseOver Property</seealso>
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[Browsable(true),DefaultValue(""),Category("Style"),Description("Indicates the style class assigned to the column.")]
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public string StyleNormal
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{
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get {return m_StyleNormal;}
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set
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{
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m_StyleNormal=value;
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this.OnSizeChanged();
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}
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}
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/// <summary>
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/// Gets or sets the style class assigned to the column which is applied when mouse
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/// button is pressed over the header. Empty value indicates that default
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/// style is used as specified on column's parent.
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/// </summary>
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/// <value>
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/// Name of the style assigned to the column or an empty string indicating that default
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/// style setting from tree control is applied. Default is empty string.
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/// </value>
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/// <remarks>
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/// When property is set to an empty string the style setting from parent tree
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/// controls is used. ColumnStyleMouseDown on TreeGX control is a root style for a
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/// cell.
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/// </remarks>
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/// <seealso cref="StyleNormal">StyleNormal Property</seealso>
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/// <seealso cref="StyleMouseOver">StyleMouseOver Property</seealso>
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[Browsable(true),DefaultValue(""),Category("Style"),Description("Indicates the style class assigned to the column when mouse is down.")]
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public string StyleMouseDown
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{
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get {return m_StyleMouseDown;}
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set
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{
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m_StyleMouseDown=value;
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this.OnSizeChanged();
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}
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}
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/// <summary>
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/// Gets or sets the style class assigned to the column which is applied when mouse is
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/// over the column. Empty value indicates that default style is used as specified on column's
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/// parent control.
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/// </summary>
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/// <value>
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/// Name of the style assigned to the column or an empty string indicating that default
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/// style setting from tree control is applied. Default is empty string.
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/// </value>
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/// <remarks>
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/// When property is set to an empty string the style setting from parent tree
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/// controls is used. ColumnStyleMouseOver on TreeGX control is a root style for a
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/// cell.
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/// </remarks>
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/// <seealso cref="StyleNormal">StyleNormal Property</seealso>
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/// <seealso cref="StyleMouseDown">StyleMouseDown Property</seealso>
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[Browsable(true),DefaultValue(""),Category("Style"),Description("Indicates the style class assigned to the cell when mouse is over the column.")]
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public string StyleMouseOver
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{
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get {return m_StyleMouseOver;}
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set
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{
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m_StyleMouseOver=value;
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this.OnSizeChanged();
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}
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}
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/// <summary>
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/// Gets or sets the name of the column in the ColumnHeaderCollection.
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/// </summary>
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[Browsable(true),DefaultValue(""),Category("Data"),Description("Indicates the name of the column in the ColumnHeaderCollection.")]
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public string ColumnName
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{
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get {return m_ColumnName;}
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set
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{
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m_ColumnName=value;
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}
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}
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/// <summary>
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/// Gets or sets the column caption.
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/// </summary>
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[Browsable(true),DefaultValue(""),Category("Appearance"),Description("Indicates column caption.")]
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public string Text
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{
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get {return m_Text;}
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set
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{
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m_Text=value;
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}
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}
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/// <summary>
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/// Gets or sets whether column is visible. Hidding the header column will also hide coresponding data column.
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/// </summary>
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[Browsable(true),DefaultValue(true),Category("Behavior"),Description("Indicates whether column is visible.")]
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public bool Visible
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{
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get {return m_Visible;}
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set
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{
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if(m_Visible!=value)
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{
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m_Visible=value;
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}
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}
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}
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#endregion
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#region Internal Implementation
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/// <summary>
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/// Gets or sets whether column size has changed and it's layout needs to be recalculated.
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/// </summary>
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internal bool SizeChanged
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{
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get {return m_SizeChanged;}
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set {m_SizeChanged=value;}
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}
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private void OnSizeChanged()
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{
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m_SizeChanged=true;
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if(HeaderSizeChanged!=null)
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HeaderSizeChanged(this,new EventArgs());
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}
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private void WidthChanged(object sender, EventArgs e)
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{
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this.OnSizeChanged();
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}
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#endregion
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}
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}
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