DrawListViewColumnHeaderEventArgs クラス
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)


ListView.DrawColumnHeader イベントを利用して、詳細ビューにおける ListView コントロールの外観をカスタマイズ (またはオーナー描画) できます。
ListView コントロールの ListView.OwnerDraw プロパティが true に設定され、View プロパティが Details に設定されると、ListView.DrawColumnHeader イベントが発生します。イベント ハンドラに渡される DrawListViewColumnHeaderEventArgs には、描画する ColumnHeader に関する情報が格納されます。さらに、ヘッダーの描画に役立つメソッドも提供します。
描画する列ヘッダーに関する情報を取得するには、Header プロパティを使用します。Graphics プロパティを使用して、Bounds プロパティで指定される領域内で実際に描画を行います。カスタマイズを必要としない標準の ListView 要素を描画するには、DrawBackground メソッドと DrawText メソッドを使用します。
サブ項目をオペレーティング システムによって描画する場合には、DrawDefault プロパティを使用します。これは特定のヘッダーだけをカスタマイズする場合に便利です。
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オーナー描画の際にグラフィックがちらつく問題を回避するには、ListView コントロールをオーバーライドし、DoubleBuffered プロパティを true に設定します。この機能は、Windows XP および Windows Server 2003 ファミリでアプリケーションから Application.EnableVisualStyles メソッドを呼び出す場合にのみ使用できます。 |

ListView コントロールのカスタム描画を提供する方法を示すコード例を次に示します。例の中の ListView コントロールには、グラデーションの背景が使用されています。負の値を持つサブ項目は、赤の前景色と黒の背景色で表されます。
ListView.DrawItem イベントのハンドラはすべての項目の背景を描画します。ListView.DrawSubItem イベントのハンドラは、テキスト値を描画し、負の値を持つサブ項目についてはテキストと背景の両方を描画します。DrawColumnHeader イベントのハンドラは、各列ヘッダーを描画します。
ContextMenu コンポーネントは、詳細ビューとリスト ビューの切り替えを行う手段を提供します。リスト ビューでは、ListView.DrawItem イベントのみが発生します。この場合、ListView.DrawItem イベント ハンドラでテキストと背景の両方が描画されます。
Imports System Imports System.Drawing Imports System.Drawing.Drawing2D Imports System.Globalization Imports System.Windows.Forms Public Class ListViewOwnerDraw Inherits Form Private WithEvents listView1 As New ListView() Private WithEvents contextMenu1 As New ContextMenu() Private WithEvents listMenuItem As New MenuItem("List") Private WithEvents detailsMenuItem As New MenuItem("Details") Public Sub New() ' Initialize the shortcut menu. contextMenu1.MenuItems.AddRange(New MenuItem() _ {Me.listMenuItem, Me.detailsMenuItem}) ' Initialize the ListView control. With Me.listView1 .BackColor = Color.Black .ForeColor = Color.White .Dock = DockStyle.Fill .View = View.Details .FullRowSelect = True .OwnerDraw = True .ContextMenu = Me.contextMenu1 End With ' Add columns to the ListView control. With Me.listView1.Columns .Add("Name", 72, HorizontalAlignment.Center) .Add("First", 72, HorizontalAlignment.Center) .Add("Second", 72, HorizontalAlignment.Center) .Add("Third", 72, HorizontalAlignment.Center) End With ' Create items and add them to the ListView control. Dim listViewItem1 As New ListViewItem(New String() _ {"One", "20", "30", "-40"}, -1) Dim listViewItem2 As New ListViewItem(New String() _ {"Two", "-250", "145", "37"}, -1) Dim listViewItem3 As New ListViewItem(New String() _ {"Three", "200", "800", "-1,001"}, -1) Dim listViewItem4 As New ListViewItem(New String() _ {"Four", "not available", "-2", "100"}, -1) Me.listView1.Items.AddRange(New ListViewItem() _ {listViewItem1, listViewItem2, listViewItem3, listViewItem4}) ' Initialize the form and add the ListView control to it. With Me .ClientSize = New Size(292, 79) .FormBorderStyle = FormBorderStyle.FixedSingle .MaximizeBox = False .Text = "ListView OwnerDraw Example" .Controls.Add(Me.listView1) End With End Sub ' Clean up any resources being used. Protected Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then contextMenu1.Dispose() End If MyBase.Dispose(disposing) End Sub <STAThread()> _ Shared Sub Main() Application.Run(New ListViewOwnerDraw()) End Sub ' Sets the ListView control to the List view. Private Sub menuItemList_Click(ByVal sender As Object, _ ByVal e As EventArgs) _ Handles listMenuItem.Click Me.listView1.View = View.List End Sub ' Sets the ListView control to the Details view. Private Sub menuItemDetails_Click(ByVal sender As Object, _ ByVal e As EventArgs) _ Handles detailsMenuItem.Click Me.listView1.View = View.Details ' Reset the tag on each item to re-enable the workaround ' in the MouseMove event handler. For Each item As ListViewItem In listView1.Items item.Tag = Nothing Next End Sub ' Selects and focuses an item when it is clicked anywhere along ' its width. The click must normally be on the parent item text. Private Sub listView1_MouseUp(ByVal sender As Object, _ ByVal e As MouseEventArgs) _ Handles listView1.MouseUp Dim clickedItem As ListViewItem = Me.listView1.GetItemAt(5, e.Y) If Not (clickedItem Is Nothing) Then clickedItem.Selected = True clickedItem.Focused = True End If End Sub ' Draws the backgrounds for entire ListView items. Private Sub listView1_DrawItem(ByVal sender As Object, _ ByVal e As DrawListViewItemEventArgs) _ Handles listView1.DrawItem If Not (e.State And ListViewItemStates.Selected) = 0 Then ' Draw the background for a selected item. e.Graphics.FillRectangle(Brushes.Maroon, e.Bounds) e.DrawFocusRectangle() Else ' Draw the background for an unselected item. Dim brush As New LinearGradientBrush(e.Bounds, Color.Orange, _ Color.Maroon, LinearGradientMode.Horizontal) Try e.Graphics.FillRectangle(brush, e.Bounds) Finally brush.Dispose() End Try End If ' Draw the item text for views other than the Details view. If Not Me.listView1.View = View.Details Then e.DrawText() End If End Sub ' Draws subitem text and applies content-based formatting. Private Sub listView1_DrawSubItem(ByVal sender As Object, _ ByVal e As DrawListViewSubItemEventArgs) _ Handles listView1.DrawSubItem Dim flags As TextFormatFlags = TextFormatFlags.Left Dim sf As New StringFormat() Try ' Store the column text alignment, letting it default ' to Left if it has not been set to Center or Right. Select Case e.Header.TextAlign Case HorizontalAlignment.Center sf.Alignment = StringAlignment.Center flags = TextFormatFlags.HorizontalCenter Case HorizontalAlignment.Right sf.Alignment = StringAlignment.Far flags = TextFormatFlags.Right End Select ' Draw the text and background for a subitem with a ' negative value. Dim subItemValue As Double If e.ColumnIndex > 0 AndAlso _ Double.TryParse(e.SubItem.Text, NumberStyles.Currency, _ NumberFormatInfo.CurrentInfo, subItemValue) AndAlso _ subItemValue < 0 Then ' Unless the item is selected, draw the standard ' background to make it stand out from the gradient. If (e.ItemState And ListViewItemStates.Selected) = 0 Then e.DrawBackground() End If ' Draw the subitem text in red to highlight it. e.Graphics.DrawString(e.SubItem.Text, _ Me.listView1.Font, Brushes.Red, e.Bounds, sf) Return End If ' Draw normal text for a subitem with a nonnegative ' or nonnumerical value. e.DrawText(flags) Finally sf.Dispose() End Try End Sub ' Draws column headers. Private Sub listView1_DrawColumnHeader(ByVal sender As Object, _ ByVal e As DrawListViewColumnHeaderEventArgs) _ Handles listView1.DrawColumnHeader Dim sf As New StringFormat() Try ' Store the column text alignment, letting it default ' to Left if it has not been set to Center or Right. Select Case e.Header.TextAlign Case HorizontalAlignment.Center sf.Alignment = StringAlignment.Center Case HorizontalAlignment.Right sf.Alignment = StringAlignment.Far End Select ' Draw the standard header background. e.DrawBackground() ' Draw the header text. Dim headerFont As New Font("Helvetica", 10, FontStyle.Bold) Try e.Graphics.DrawString(e.Header.Text, headerFont, _ Brushes.Black, e.Bounds, sf) Finally headerFont.Dispose() End Try Finally sf.Dispose() End Try End Sub ' Forces each row to repaint itself the first time the mouse moves over ' it, compensating for an extra DrawItem event sent by the wrapped ' Win32 control. Private Sub listView1_MouseMove(ByVal sender As Object, _ ByVal e As MouseEventArgs) _ Handles listView1.MouseMove Dim item As ListViewItem = listView1.GetItemAt(e.X, e.Y) If Not item Is Nothing AndAlso item.Tag Is Nothing Then listView1.Invalidate(item.Bounds) item.Tag = "tagged" End If End Sub End Class
using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Globalization; using System.Windows.Forms; public class ListViewOwnerDraw : Form { private ListView listView1 = new ListView(); private ContextMenu contextMenu1 = new ContextMenu(); public ListViewOwnerDraw() { // Initialize the ListView control. listView1.BackColor = Color.Black; listView1.ForeColor = Color.White; listView1.Dock = DockStyle.Fill; listView1.View = View.Details; listView1.FullRowSelect = true; // Add columns to the ListView control. listView1.Columns.Add("Name", 72, HorizontalAlignment.Center); listView1.Columns.Add("First", 72, HorizontalAlignment.Center); listView1.Columns.Add("Second", 72, HorizontalAlignment.Center); listView1.Columns.Add("Third", 72, HorizontalAlignment.Center); // Create items and add them to the ListView control. ListViewItem listViewItem1 = new ListViewItem(new string[] { "One", "20", "30", "-40" }, -1); ListViewItem listViewItem2 = new ListViewItem(new string[] { "Two", "-250", "145", "37" }, -1); ListViewItem listViewItem3 = new ListViewItem(new string[] { "Three", "200", "800", "-1,001" }, -1); ListViewItem listViewItem4 = new ListViewItem(new string[] { "Four", "not available", "-2", "100" }, -1); listView1.Items.AddRange(new ListViewItem[] { listViewItem1, listViewItem2, listViewItem3, listViewItem4 }); // Initialize the shortcut menu and // assign it to the ListView control. contextMenu1.MenuItems.Add("List", new EventHandler(menuItemList_Click)); contextMenu1.MenuItems.Add("Details", new EventHandler(menuItemDetails_Click)); listView1.ContextMenu = contextMenu1; // Configure the ListView control for owner-draw and add // handlers for the owner-draw events. listView1.OwnerDraw = true; listView1.DrawItem += new DrawListViewItemEventHandler(listView1_DrawItem); listView1.DrawSubItem += new DrawListViewSubItemEventHandler(listView1_DrawSubItem); listView1.DrawColumnHeader += new DrawListViewColumnHeaderEventHandler(listView1_DrawColumnHeader); // Add a handler for the MouseMove event to compensate for an // extra DrawItem event that occurs the first time the mouse // moves over each row. listView1.MouseMove += new MouseEventHandler(listView1_MouseMove); // Add a handler for the MouseUp event so an item can be // selected by clicking anywhere along its width. listView1.MouseUp += new MouseEventHandler(listView1_MouseUp); // Initialize the form and add the ListView control to it. this.ClientSize = new Size(292, 79); this.FormBorderStyle = FormBorderStyle.FixedSingle; this.MaximizeBox = false; this.Text = "ListView OwnerDraw Example"; this.Controls.Add(listView1); } // Clean up any resources being used. protected override void Dispose(bool disposing) { if (disposing) { contextMenu1.Dispose(); } base.Dispose(disposing); } [STAThread] static void Main() { Application.EnableVisualStyles(); Application.Run(new ListViewOwnerDraw()); } // Sets the ListView control to the List view. private void menuItemList_Click(object sender, EventArgs e) { listView1.View = View.List; listView1.Invalidate(); } // Sets the ListView control to the Details view. private void menuItemDetails_Click(object sender, EventArgs e) { listView1.View = View.Details; // Reset the tag on each item to re-enable the workaround in // the MouseMove event handler. foreach (ListViewItem item in listView1.Items) { item.Tag = null; } } // Selects and focuses an item when it is clicked anywhere along // its width. The click must normally be on the parent item text. private void listView1_MouseUp(object sender, MouseEventArgs e) { ListViewItem clickedItem = listView1.GetItemAt(5, e.Y); if (clickedItem != null) { clickedItem.Selected = true; clickedItem.Focused = true; } } // Draws the backgrounds for entire ListView items. private void listView1_DrawItem(object sender, DrawListViewItemEventArgs e) { if ((e.State & ListViewItemStates.Selected) != 0) { // Draw the background and focus rectangle for a selected item. e.Graphics.FillRectangle(Brushes.Maroon, e.Bounds); e.DrawFocusRectangle(); } else { // Draw the background for an unselected item. using (LinearGradientBrush brush = new LinearGradientBrush(e.Bounds, Color.Orange , Color.Maroon, LinearGradientMode.Horizontal)) { e.Graphics.FillRectangle(brush, e.Bounds); } } // Draw the item text for views other than the Details view. if (listView1.View != View.Details) { e.DrawText(); } } // Draws subitem text and applies content-based formatting. private void listView1_DrawSubItem(object sender, DrawListViewSubItemEventArgs e) { TextFormatFlags flags = TextFormatFlags.Left; using (StringFormat sf = new StringFormat()) { // Store the column text alignment, letting it default // to Left if it has not been set to Center or Right. switch (e.Header.TextAlign) { case HorizontalAlignment.Center: sf.Alignment = StringAlignment.Center; flags = TextFormatFlags.HorizontalCenter; break; case HorizontalAlignment.Right: sf.Alignment = StringAlignment.Far; flags = TextFormatFlags.Right; break; } // Draw the text and background for a subitem with a // negative value. double subItemValue; if (e.ColumnIndex > 0 && Double.TryParse( e.SubItem.Text, NumberStyles.Currency, NumberFormatInfo.CurrentInfo, out subItemValue) && subItemValue < 0) { // Unless the item is selected, draw the standard // background to make it stand out from the gradient. if ((e.ItemState & ListViewItemStates.Selected) == 0) { e.DrawBackground(); } // Draw the subitem text in red to highlight it. e.Graphics.DrawString(e.SubItem.Text, listView1.Font, Brushes.Red, e.Bounds, sf); return; } // Draw normal text for a subitem with a nonnegative // or nonnumerical value. e.DrawText(flags); } } // Draws column headers. private void listView1_DrawColumnHeader(object sender, DrawListViewColumnHeaderEventArgs e) { using (StringFormat sf = new StringFormat()) { // Store the column text alignment, letting it default // to Left if it has not been set to Center or Right. switch (e.Header.TextAlign) { case HorizontalAlignment.Center: sf.Alignment = StringAlignment.Center; break; case HorizontalAlignment.Right: sf.Alignment = StringAlignment.Far; break; } // Draw the standard header background. e.DrawBackground(); // Draw the header text. using (Font headerFont = new Font("Helvetica", 10, FontStyle.Bold)) { e.Graphics.DrawString(e.Header.Text, headerFont, Brushes.Black, e.Bounds, sf); } } return; } // Forces each row to repaint itself the first time the mouse moves over // it, compensating for an extra DrawItem event sent by the wrapped // Win32 control. private void listView1_MouseMove(object sender, MouseEventArgs e) { ListViewItem item = listView1.GetItemAt(e.X, e.Y); if (item != null && item.Tag == null) { listView1.Invalidate(item.Bounds); item.Tag = "tagged"; } } }
#using <System.dll> #using <System.Drawing.dll> #using <System.Windows.Forms.dll> using namespace System; using namespace System::Drawing; using namespace System::Drawing::Drawing2D; using namespace System::Globalization; using namespace System::Windows::Forms; public ref class ListViewOwnerDraw: public Form { private: ListView^ listView1; System::Windows::Forms::ContextMenu^ contextMenu1; public: ListViewOwnerDraw() { listView1 = gcnew ListView; contextMenu1 = gcnew System::Windows::Forms::ContextMenu; // Initialize the ListView control. listView1->BackColor = Color::Black; listView1->ForeColor = Color::White; listView1->Dock = DockStyle::Fill; listView1->View = View::Details; listView1->FullRowSelect = true; // Add columns to the ListView control. listView1->Columns->Add( "Name", 72, HorizontalAlignment::Center ); listView1->Columns->Add( "First", 72, HorizontalAlignment::Center ); listView1->Columns->Add( "Second", 72, HorizontalAlignment::Center ); listView1->Columns->Add( "Third", 72, HorizontalAlignment::Center ); // Create items and add them to the ListView control. array<String^>^temp0 = {"One","20","30" ,"-40"}; ListViewItem^ listViewItem1 = gcnew ListViewItem( temp0,-1 ); array<String^>^temp1 = {"Two","-250","145" ,"37"}; ListViewItem^ listViewItem2 = gcnew ListViewItem( temp1,-1 ); array<String^>^temp2 = {"Three","200","800" ,"-1,001"}; ListViewItem^ listViewItem3 = gcnew ListViewItem( temp2,-1 ); array<String^>^temp3 = {"Four","not available","-2" ,"100"}; ListViewItem^ listViewItem4 = gcnew ListViewItem( temp3,-1 ); array<ListViewItem^>^temp4 = {listViewItem1,listViewItem2,listViewItem3 ,listViewItem4}; listView1->Items->AddRange( temp4 ); // Initialize the shortcut menu and // assign it to the ListView control. contextMenu1->MenuItems->Add( "List", gcnew EventHandler( this, &ListViewOwnerDraw::menuItemList_Click ) ); contextMenu1->MenuItems->Add( "Details", gcnew EventHandler( this, &ListViewOwnerDraw::menuItemDetails_Click ) ); listView1->ContextMenu = contextMenu1; // Configure the ListView control for owner-draw and add // handlers for the owner-draw events. listView1->OwnerDraw = true; listView1->DrawItem += gcnew DrawListViewItemEventHandler( this, &ListViewOwnerDraw::listView1_DrawItem ); listView1->DrawSubItem += gcnew DrawListViewSubItemEventHandler( this, &ListViewOwnerDraw::listView1_DrawSubItem ); listView1->DrawColumnHeader += gcnew DrawListViewColumnHeaderEventHandler( this, &ListViewOwnerDraw::listView1_DrawColumnHeader ); //listView1.MouseMove += gcnew MouseEventHandler(&ListViewOwnerDraw::listView1_MouseMove); // Add a handler for the MouseUp event so an item can be // selected by clicking anywhere along its width. listView1->MouseUp += gcnew MouseEventHandler( this, &ListViewOwnerDraw::listView1_MouseUp ); // Initialize the form and add the ListView control to it. this->ClientSize = System::Drawing::Size( 292, 79 ); this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::FixedSingle; this->MaximizeBox = false; this->Text = "ListView OwnerDraw Example"; this->Controls->Add( listView1 ); } // Clean up any resources being used. public: ~ListViewOwnerDraw() { if ( contextMenu1 != nullptr ) { delete contextMenu1; } } private: // Sets the ListView control to the List view. void menuItemList_Click( Object^ /*sender*/, EventArgs^ /*e*/ ) { listView1->View = View::List; } // Sets the ListView control to the Details view. void menuItemDetails_Click( Object^ /*sender*/, EventArgs^ /*e*/ ) { listView1->View = View::Details; } // Selects and focuses an item when it is clicked anywhere along // its width. The click must normally be on the parent item text. void listView1_MouseUp( Object^ /*sender*/, MouseEventArgs^ e ) { ListViewItem^ clickedItem = listView1->GetItemAt( 5, e->Y ); if ( clickedItem != nullptr ) { clickedItem->Selected = true; clickedItem->Focused = true; } } // Draws the backgrounds for entire ListView items. private: void listView1_DrawItem( Object^ /*sender*/, DrawListViewItemEventArgs^ e ) { if ( (e->State & ListViewItemStates::Selected) != (ListViewItemStates)0 ) { // Draw the background for a selected item. e->Graphics->FillRectangle( Brushes::Maroon, e->Bounds ); e->DrawFocusRectangle(); } else { // Draw the background for an unselected item. LinearGradientBrush^ myBrush = gcnew LinearGradientBrush( e->Bounds,Color::Orange,Color::Maroon,LinearGradientMode::Horizontal ); try { e->Graphics->FillRectangle( myBrush, e->Bounds ); } finally { if ( myBrush ) delete (IDisposable^)myBrush; } } if ( listView1->View != View::Details ) { e->DrawText(); } } // Draws subitem text and applies content-based formatting. private: void listView1_DrawSubItem( Object^ /*sender*/, DrawListViewSubItemEventArgs^ e ) { TextFormatFlags flags = TextFormatFlags::Left; StringFormat^ sf = gcnew StringFormat; try { // Store the column text alignment, letting it default // to Left if it has not been set to Center or Right. switch ( e->Header->TextAlign ) { case HorizontalAlignment::Center: sf->Alignment = StringAlignment::Center; flags = TextFormatFlags::HorizontalCenter; break; case HorizontalAlignment::Right: sf->Alignment = StringAlignment::Far; flags = TextFormatFlags::Right; break; } // Draw the text and background for a subitem with a // negative value. double subItemValue; if ( e->ColumnIndex > 0 && Double::TryParse( e->SubItem->Text, NumberStyles::Currency, NumberFormatInfo::CurrentInfo, subItemValue ) && subItemValue < 0 ) { // Unless the item is selected, draw the standard // background to make it stand out from the gradient. if ( (e->ItemState & ListViewItemStates::Selected) == (ListViewItemStates)0 ) { e->DrawBackground(); } // Draw the subitem text in red to highlight it. e->Graphics->DrawString( e->SubItem->Text, listView1->Font, Brushes::Red, e->Bounds, sf ); return; } // Draw normal text for a subitem with a nonnegative // or nonnumerical value. e->DrawText( flags ); } finally { if ( sf ) delete (IDisposable^)sf; } } // Draws column headers. private: void listView1_DrawColumnHeader( Object^ /*sender*/, DrawListViewColumnHeaderEventArgs^ e ) { StringFormat^ sf = gcnew StringFormat; try { // Store the column text alignment, letting it default // to Left if it has not been set to Center or Right. switch ( e->Header->TextAlign ) { case HorizontalAlignment::Center: sf->Alignment = StringAlignment::Center; break; case HorizontalAlignment::Right: sf->Alignment = StringAlignment::Far; break; } // Draw the standard header background. e->DrawBackground(); // Draw the header text. System::Drawing::Font^ headerFont = gcnew System::Drawing::Font( "Helvetica",10,FontStyle::Bold ); try { e->Graphics->DrawString( e->Header->Text, headerFont, Brushes::Black, e->Bounds, sf ); } finally { if ( headerFont ) delete (IDisposable^)headerFont; } } finally { if ( sf ) delete (IDisposable^)sf; } return; } // Forces the row the mouse is on to repaint itself. void listView1_MouseMove( Object^ /*sender*/, MouseEventArgs^ e ) { ListViewItem^ item = listView1->GetItemAt( e->X, e->Y ); if ( item != nullptr ) { listView1->Invalidate( item->Bounds ); } } }; [STAThread] int main() { Application::Run( gcnew ListViewOwnerDraw ); }
import System.*; import System.Drawing.*; import System.Drawing.Drawing2D.*; import System.Globalization.*; import System.Windows.Forms.*; public class ListViewOwnerDraw extends Form { private ListView myListView; private ContextMenu myContextMenu; public ListViewOwnerDraw() { // Create and initialize the ListView control. myListView = new ListView(); myListView.set_BackColor(Color.get_Black()); myListView.set_ForeColor(Color.get_White()); myListView.set_Dock(DockStyle.Fill); myListView.set_View(View.Details); // Add columns to the ListView control. myListView.get_Columns().Add("Name", 72, HorizontalAlignment.Center); myListView.get_Columns().Add("First", 72, HorizontalAlignment.Center); myListView.get_Columns().Add("Second", 72, HorizontalAlignment.Center); myListView.get_Columns().Add("Third", 72, HorizontalAlignment.Center); // Create items and add them to the ListView control. ListViewItem listViewItem1 = new ListViewItem(new String[] { "One", "20", "30", "-40" }, -1); ListViewItem listViewItem2 = new ListViewItem(new String[] { "Two", "-250", "145", "37" }, -1); ListViewItem listViewItem3 = new ListViewItem(new String[] { "Three", "200", "800", "-1,001" }, -1); ListViewItem listViewItem4 = new ListViewItem(new String[] { "Four", "not available", "-2", "100" }, -1); myListView.get_Items().AddRange(new ListViewItem[] { listViewItem1, listViewItem2, listViewItem3, listViewItem4 }); // Create a shortcut menu for changing views and // assign it to the ListView control. myContextMenu = new ContextMenu(); myContextMenu.get_MenuItems().Add("List", new EventHandler(menuItemList_Click)); myContextMenu.get_MenuItems().Add("Details", new EventHandler(menuItemDetails_Click)); myListView.set_ContextMenu(myContextMenu); // Configure the ListView control for owner-draw and add // handlers for the owner-draw events. myListView.set_OwnerDraw(true); myListView.add_DrawItem(new DrawListViewItemEventHandler( myListView_DrawItem)); myListView.add_DrawSubItem(new DrawListViewSubItemEventHandler( myListView_DrawSubItem)); // Add a handler for the MouseUp event so an item can be // selected by clicking anywhere along its width. myListView.add_MouseUp(new MouseEventHandler(myListView_MouseUp)); // Initialize the form and add the ListView control to it. this.set_ClientSize(new Size(292, 79)); this.set_FormBorderStyle(get_FormBorderStyle().FixedSingle); this.set_MaximizeBox(false); this.set_Text("ListView OwnerDraw Example"); this.get_Controls().Add(myListView); } //ListViewOwnerDraw // Clean up any resources being used. protected void Dispose(boolean disposing) { if (disposing) { myContextMenu.Dispose(); } super.Dispose(disposing); } //Dispose /** @attribute STAThread() */ public static void main(String[] args) { Application.Run(new ListViewOwnerDraw()); } //main // Sets the ListView control to the List view. private void menuItemList_Click(Object sender, EventArgs e) { myListView.set_View(View.List); } //menuItemList_Click // Sets the ListView control to the Details view. private void menuItemDetails_Click(Object sender, EventArgs e) { myListView.set_View(View.Details); } //menuItemDetails_Click // Selects and focuses an item when it is clicked anywhere along // its width. The click must normally be on the parent item text. private void myListView_MouseUp(Object sender, MouseEventArgs e) { ListViewItem clickedItem = myListView.GetItemAt(5, e.get_Y()); if (clickedItem != null) { clickedItem.set_Selected(true); clickedItem.set_Focused(true); } } //myListView_MouseUp // Draws the backgrounds for the column header row and for entire // ListView items. private void myListView_DrawItem(Object sender, DrawListViewItemEventArgs e) { // Draw the background for the column header row. if (e.get_ItemIndex() == -1) { e.get_Item().set_BackColor(Color.get_Black()); e.DrawBackground(); } // Draw the background for a selected item. else { if (Convert.ToInt32((e.get_State() & ListViewItemStates.Selected)) != 0) { e.get_Graphics().FillRectangle(Brushes.get_Maroon(), e.get_Bounds()); e.DrawFocusRectangle(); } // Draw the background for an unselected item. else { LinearGradientBrush myBrush = new LinearGradientBrush( e.get_Bounds(), Color.get_Orange(), Color.get_Maroon(), LinearGradientMode.Horizontal); try { e.get_Graphics().FillRectangle(myBrush, e.get_Bounds()); } finally { myBrush.Dispose(); } } } // Draw the item text for views other than the Details view. if (!(((ListView)sender).get_View().Equals(View.Details))) { e.DrawText(); } } //myListView_DrawItem // Draws subitem text and applies content-based formatting. private void myListView_DrawSubItem(Object sender, DrawListViewSubItemEventArgs e) { TextFormatFlags flags = TextFormatFlags.Left; StringFormat sf = new StringFormat(); try { // Store the column text alignment, letting it default // to Left if it has not been set to Center or Right. if (e.get_Header().get_TextAlign(). Equals(HorizontalAlignment.Center)) { sf.set_Alignment(StringAlignment.Center); flags = TextFormatFlags.HorizontalCenter; } else { if (e.get_Header().get_TextAlign(). Equals(HorizontalAlignment.Right)) { sf.set_Alignment(StringAlignment.Far); flags = TextFormatFlags.Right; } } // Draw the text for a column header. if (e.get_ItemIndex() == -1) { Font myFont = new Font("Helvetica", 12, FontStyle.Bold); try { e.get_Graphics().DrawString(e.get_Item().get_Text(), myFont, Brushes.get_White(), new PointF((float)e.get_Bounds().get_X(), (float)e.get_Bounds().get_Y()), sf); } finally { myFont.Dispose(); } return; } // Draw the text and background for a subitem with a // negative value. double subItemValue = 0; if (e.get_ColumnIndex() > 0 && System.Double.TryParse( e.get_Item().get_SubItems().get_Item(e.get_ColumnIndex()). get_Text(), NumberStyles.Currency, NumberFormatInfo.get_CurrentInfo(), subItemValue) && subItemValue < 0) { // Unless the item is selected, draw the standard // background to make it stand out from the gradient. if (Convert.ToInt32(e.get_ItemState() & ListViewItemStates.Selected) == 0) { e.DrawBackground(); } // Draw the subitem text in red to highlight it. e.get_Graphics().DrawString(e.get_Item().get_SubItems(). get_Item(e.get_ColumnIndex()).get_Text(), ((ListView)sender).get_Font(), Brushes.get_Red(), RectangleF.op_Implicit(e.get_Bounds()), sf); return; } // Draw normal text for a subitem with a nonnegative // or nonnumerical value. e.DrawText(flags); } finally { sf.Dispose(); } } //myListView_DrawSubItem } //ListViewOwnerDraw

System.EventArgs
System.Windows.Forms.DrawListViewColumnHeaderEventArgs


Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


DrawListViewColumnHeaderEventArgs コンストラクタ
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)

Public Sub New ( _ graphics As Graphics, _ bounds As Rectangle, _ columnIndex As Integer, _ header As ColumnHeader, _ state As ListViewItemStates, _ foreColor As Color, _ backColor As Color, _ font As Font _ )
Dim graphics As Graphics Dim bounds As Rectangle Dim columnIndex As Integer Dim header As ColumnHeader Dim state As ListViewItemStates Dim foreColor As Color Dim backColor As Color Dim font As Font Dim instance As New DrawListViewColumnHeaderEventArgs(graphics, bounds, columnIndex, header, state, foreColor, backColor, font)
public DrawListViewColumnHeaderEventArgs ( Graphics graphics, Rectangle bounds, int columnIndex, ColumnHeader header, ListViewItemStates state, Color foreColor, Color backColor, Font font )
public: DrawListViewColumnHeaderEventArgs ( Graphics^ graphics, Rectangle bounds, int columnIndex, ColumnHeader^ header, ListViewItemStates state, Color foreColor, Color backColor, Font^ font )
public DrawListViewColumnHeaderEventArgs ( Graphics graphics, Rectangle bounds, int columnIndex, ColumnHeader header, ListViewItemStates state, Color foreColor, Color backColor, Font font )
public function DrawListViewColumnHeaderEventArgs ( graphics : Graphics, bounds : Rectangle, columnIndex : int, header : ColumnHeader, state : ListViewItemStates, foreColor : Color, backColor : Color, font : Font )

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


DrawListViewColumnHeaderEventArgs クラス
DrawListViewColumnHeaderEventArgs メンバ
System.Windows.Forms 名前空間
DrawListViewColumnHeaderEventArgs プロパティ

名前 | 説明 | |
---|---|---|
![]() | BackColor | ヘッダーの背景色を取得します。 |
![]() | Bounds | 描画する列ヘッダーのサイズと位置を取得します。 |
![]() | ColumnIndex | 描画するヘッダーを表す ColumnHeader のインデックスを取得します。 |
![]() | DrawDefault | オーナー描画ではなくオペレーティング システムによって列ヘッダーを描画するかどうかを示す値を取得または設定します。 |
![]() | Font | 列ヘッダーのテキストの描画に使用されるフォントを取得します。 |
![]() | ForeColor | ヘッダーの前景色を取得します。 |
![]() | Graphics | 列ヘッダーの描画に使用される Graphics を取得します。 |
![]() | Header | 描画する列ヘッダーを表す ColumnHeader を取得します。 |
![]() | State | 列ヘッダーの現在の状態を取得します。 |

関連項目
DrawListViewColumnHeaderEventArgs クラスSystem.Windows.Forms 名前空間
ListView
ListView.DrawColumnHeader
ListView.OwnerDraw
ListView.View
ColumnHeader クラス
View
DrawListViewColumnHeaderEventArgs メソッド

名前 | 説明 | |
---|---|---|
![]() | DrawBackground | 列ヘッダーの背景を描画します。 |
![]() | DrawText | オーバーロードされます。 列ヘッダーのテキストを描画します。 |
![]() | Equals | オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 ( Object から継承されます。) |
![]() | GetHashCode | 特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 ( Object から継承されます。) |
![]() | GetType | 現在のインスタンスの Type を取得します。 ( Object から継承されます。) |
![]() | ReferenceEquals | 指定した複数の Object インスタンスが同一かどうかを判断します。 ( Object から継承されます。) |
![]() | ToString | 現在の Object を表す String を返します。 ( Object から継承されます。) |

名前 | 説明 | |
---|---|---|
![]() | Finalize | Object がガベージ コレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 ( Object から継承されます。) |
![]() | MemberwiseClone | 現在の Object の簡易コピーを作成します。 ( Object から継承されます。) |

関連項目
DrawListViewColumnHeaderEventArgs クラスSystem.Windows.Forms 名前空間
ListView
ListView.DrawColumnHeader
ListView.OwnerDraw
ListView.View
ColumnHeader クラス
View
DrawListViewColumnHeaderEventArgs メンバ
ListView.DrawColumnHeader イベントのデータを提供します。
DrawListViewColumnHeaderEventArgs データ型で公開されるメンバを以下の表に示します。


名前 | 説明 | |
---|---|---|
![]() | BackColor | ヘッダーの背景色を取得します。 |
![]() | Bounds | 描画する列ヘッダーのサイズと位置を取得します。 |
![]() | ColumnIndex | 描画するヘッダーを表す ColumnHeader のインデックスを取得します。 |
![]() | DrawDefault | オーナー描画ではなくオペレーティング システムによって列ヘッダーを描画するかどうかを示す値を取得または設定します。 |
![]() | Font | 列ヘッダーのテキストの描画に使用されるフォントを取得します。 |
![]() | ForeColor | ヘッダーの前景色を取得します。 |
![]() | Graphics | 列ヘッダーの描画に使用される Graphics を取得します。 |
![]() | Header | 描画する列ヘッダーを表す ColumnHeader を取得します。 |
![]() | State | 列ヘッダーの現在の状態を取得します。 |

名前 | 説明 | |
---|---|---|
![]() | DrawBackground | 列ヘッダーの背景を描画します。 |
![]() | DrawText | オーバーロードされます。 列ヘッダーのテキストを描画します。 |
![]() | Equals | オーバーロードされます。 2 つの Object インスタンスが等しいかどうかを判断します。 (Object から継承されます。) |
![]() | GetHashCode | 特定の型のハッシュ関数として機能します。GetHashCode は、ハッシュ アルゴリズムや、ハッシュ テーブルのようなデータ構造での使用に適しています。 (Object から継承されます。) |
![]() | GetType | 現在のインスタンスの Type を取得します。 (Object から継承されます。) |
![]() | ReferenceEquals | 指定した複数の Object インスタンスが同一かどうかを判断します。 (Object から継承されます。) |
![]() | ToString | 現在の Object を表す String を返します。 (Object から継承されます。) |

名前 | 説明 | |
---|---|---|
![]() | Finalize | Object がガベージ コレクションにより収集される前に、その Object がリソースを解放し、その他のクリーンアップ操作を実行できるようにします。 (Object から継承されます。) |
![]() | MemberwiseClone | 現在の Object の簡易コピーを作成します。 (Object から継承されます。) |

関連項目
DrawListViewColumnHeaderEventArgs クラスSystem.Windows.Forms 名前空間
ListView
ListView.DrawColumnHeader
ListView.OwnerDraw
ListView.View
ColumnHeader クラス
View
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