TabRenderer クラス
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文
解説
TabRenderer クラスには、オペレーティング システムの現在の visual スタイルを使用してタブ コントロールをレンダリングするために使用できる一連の static メソッドが用意されています。コントロールのレンダリングとは、コントロールのユーザー インターフェイスを描画することです。現在の visual スタイルの外観を持つカスタム コントロールを描画する場合に有用です。タブ コントロールを描画するには、DrawTabPage メソッドを使用してページを描画し、DrawTabItem メソッドを使用して各タブを描画します。
オペレーティング システムで visual スタイルが有効にされており、visual スタイルがアプリケーション ウィンドウのクライアント領域に適用されている場合、このクラスのメソッドは現在の visual スタイルを使用してタブ コントロールを描画します。それ以外の場合は、このクラスのメソッドとプロパティは InvalidOperationException をスローします。このクラスのメンバを使用できるかどうかを確認するには、IsSupported プロパティの値をチェックします。
このクラスは、System.Windows.Forms.VisualStyles.VisualStyleElement.Tab クラスが公開する要素のいずれかに設定された System.Windows.Forms.VisualStyles.VisualStyleRenderer の機能をラップします。詳細については、「visual スタイルが使用されているコントロールのレンダリング」を参照してください。
Windows XP Home Edition, Windows XP Professional x64 Edition, Windows Server 2003 プラットフォームメモ : visual スタイルは、これらのプラットフォームでのみサポートされます。
DrawTabPage メソッドおよび DrawTabItem メソッドを使用して、2 つのタブがある基本的なタブ コントロールを描画するカスタム コントロールを作成する方法を次のコード例に示します。
Imports System Imports System.Drawing Imports System.Windows.Forms Imports System.Windows.Forms.VisualStyles Namespace TabRendererSample Class Form1 Inherits Form Public Sub New() Dim Tab1 As New CustomTabControl() Controls.Add(Tab1) Me.Size = New Size(500, 500) End Sub <STAThread()> _ Shared Sub Main() ' The call to EnableVisualStyles below does not affect whether ' TabRenderer.IsSupported is true; as long as visual styles ' are enabled by the operating system, IsSupported is true. Application.EnableVisualStyles() Application.Run(New Form1()) End Sub End Class Public Class CustomTabControl Inherits Control Private tabPageRectangle As Rectangle Private tabItemRectangle1 As Rectangle Private tabItemRectangle2 As Rectangle Private tabHeight As Integer = 30 Private tabWidth As Integer = 100 Private tab1State As TabItemState = TabItemState.Selected Private tab2State As TabItemState = TabItemState.Normal Private tab1Text As String = "Tab 1" Private tab2Text As String = "Tab 2" Private tab1Focused As Boolean = True Private tab2Focused As Boolean = False Public Sub New() With Me .Size = New Size(300, 300) .Location = New Point(10, 10) .Font = SystemFonts.IconTitleFont .Text = "TabRenderer" .DoubleBuffered = True End With tabPageRectangle = New Rectangle(ClientRectangle.X, _ ClientRectangle.Y + tabHeight, _ ClientRectangle.Width, _ ClientRectangle.Height - tabHeight) ' Extend the first tab rectangle down by 2 pixels, because ' it is selected by default. tabItemRectangle1 = New Rectangle(ClientRectangle.X, _ ClientRectangle.Y, tabWidth, tabHeight + 2) tabItemRectangle2 = New Rectangle(ClientRectangle.Location.X + _ tabWidth, ClientRectangle.Location.Y, tabWidth, tabHeight) End Sub ' Draw the tab page and the tab items. Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs) MyBase.OnPaint(e) If Not TabRenderer.IsSupported Then Me.Parent.Text = "CustomTabControl Disabled" Return End If TabRenderer.DrawTabPage(e.Graphics, tabPageRectangle) TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle1, _ tab1Text, Me.Font, tab1Focused, tab1State) TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle2, _ tab2Text, Me.Font, tab2Focused, tab2State) Me.Parent.Text = "CustomTabControl Enabled" End Sub ' Draw the selected tab item. Protected Overrides Sub OnMouseDown(ByVal e As MouseEventArgs) MyBase.OnMouseDown(e) If Not TabRenderer.IsSupported Then Return End If ' The first tab is clicked. Note that the height of the ' selected tab rectangle is raised by 2, so that it draws ' over the border of the tab page. If tabItemRectangle1.Contains(e.Location) Then tab1State = TabItemState.Selected tab2State = TabItemState.Normal tabItemRectangle1.Height += 2 tabItemRectangle2.Height -= 2 tab1Focused = True tab2Focused = False End If ' The second tab is clicked. If tabItemRectangle2.Contains(e.Location) Then tab2State = TabItemState.Selected tab1State = TabItemState.Normal tabItemRectangle2.Height += 2 tabItemRectangle1.Height -= 2 tab2Focused = True tab1Focused = False End If Invalidate() End Sub End Class End Namespace
using System; using System.Drawing; using System.Windows.Forms; using System.Windows.Forms.VisualStyles; namespace TabRendererSample { class Form1 : Form { public Form1() : base() { CustomTabControl Tab1 = new CustomTabControl(); Controls.Add(Tab1); this.Size = new Size(500, 500); } [STAThread] static void Main() { // The call to EnableVisualStyles below does not affect whether // TabRenderer.IsSupported is true; as long as visual styles // are enabled by the operating system, IsSupported is true. Application.EnableVisualStyles(); Application.Run(new Form1()); } } public class CustomTabControl : Control { private Rectangle tabPageRectangle; private Rectangle tabItemRectangle1; private Rectangle tabItemRectangle2; private int tabHeight = 30; private int tabWidth = 100; private TabItemState tab1State = TabItemState.Selected; private TabItemState tab2State = TabItemState.Normal; private string tab1Text = "Tab 1"; private string tab2Text = "Tab 2"; private bool tab1Focused = true; private bool tab2Focused = false; public CustomTabControl() : base() { this.Size = new Size(300, 300); this.Location = new Point(10, 10); this.Font = SystemFonts.IconTitleFont; this.Text = "TabRenderer"; this.DoubleBuffered = true; tabPageRectangle = new Rectangle(ClientRectangle.X , ClientRectangle.Y + tabHeight, ClientRectangle.Width, ClientRectangle.Height - tabHeight); // Extend the first tab rectangle down by 2 pixels, // because it is selected by default. tabItemRectangle1 = new Rectangle(ClientRectangle.X , ClientRectangle.Y, tabWidth, tabHeight + 2); tabItemRectangle2 = new Rectangle(ClientRectangle.Location.X + tabWidth, ClientRectangle.Location.Y, tabWidth, tabHeight); } // Draw the tab page and the tab items. protected override void OnPaint(PaintEventArgs e) { base.OnPaint(e); if (!TabRenderer.IsSupported) { this.Parent.Text = "CustomTabControl Disabled"; return; } TabRenderer.DrawTabPage(e.Graphics, tabPageRectangle); TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle1, tab1Text, this.Font, tab1Focused, tab1State); TabRenderer.DrawTabItem(e.Graphics, tabItemRectangle2, tab2Text, this.Font, tab2Focused, tab2State); this.Parent.Text = "CustomTabControl Enabled"; } // Draw the selected tab item. protected override void OnMouseDown(MouseEventArgs e) { base.OnMouseDown(e); if (!TabRenderer.IsSupported) return; // The first tab is clicked. Note that the height of the // selected tab rectangle is raised by 2, so that it draws // over the border of the tab page. if (tabItemRectangle1.Contains(e.Location)) { tab1State = TabItemState.Selected; tab2State = TabItemState.Normal; tabItemRectangle1.Height += 2; tabItemRectangle2.Height -= 2; tab1Focused = true; tab2Focused = false; } // The second tab is clicked. if (tabItemRectangle2.Contains(e.Location)) { tab2State = TabItemState.Selected; tab1State = TabItemState.Normal; tabItemRectangle2.Height += 2; tabItemRectangle1.Height -= 2; tab2Focused = true; tab1Focused = false; } Invalidate(); } } }
#using <System.Drawing.dll> #using <System.Windows.Forms.dll> #using <System.dll> using namespace System; using namespace System::Drawing; using namespace System::Windows::Forms; using namespace System::Windows::Forms::VisualStyles; namespace TabRendererSample { public ref class CustomTabControl : public Control { private: Rectangle tabPageRectangle; Rectangle tabItemRectangle1; Rectangle tabItemRectangle2; int tabHeight; int tabWidth; TabItemState tab1State; TabItemState tab2State; String^ tab1Text; String^ tab2Text; bool tab1Focused; bool tab2Focused; public: CustomTabControl() { this->tabHeight = 30; this->tabWidth = 100; this->tab1State = TabItemState::Selected; this->tab2State = TabItemState::Normal; this->tab1Text = "Tab 1"; this->tab2Text = "Tab 2"; this->tab1Focused = true; this->tab2Focused = false; this->Size = System::Drawing::Size(300, 300); this->Location = Point(10, 10); this->Font = SystemFonts::IconTitleFont; this->Text = "TabRenderer"; this->DoubleBuffered = true; tabPageRectangle = Rectangle(ClientRectangle.X, ClientRectangle.Y + tabHeight, ClientRectangle.Width, ClientRectangle.Height - tabHeight); // Extend the first tab rectangle down by 2 pixels, // because it is selected by default. tabItemRectangle1 = Rectangle(ClientRectangle.X, ClientRectangle.Y, tabWidth, tabHeight + 2); tabItemRectangle2 = Rectangle(ClientRectangle.Location.X + tabWidth, ClientRectangle.Location.Y, tabWidth, tabHeight); } // Draw the tab page and the tab items. protected: virtual void OnPaint(PaintEventArgs^ e) override { __super::OnPaint(e); if (!TabRenderer::IsSupported) { this->Parent->Text = "CustomTabControl Disabled"; return; } TabRenderer::DrawTabPage(e->Graphics, tabPageRectangle); TabRenderer::DrawTabItem(e->Graphics, tabItemRectangle1, tab1Text, this->Font, tab1Focused, tab1State); TabRenderer::DrawTabItem(e->Graphics, tabItemRectangle2, tab2Text, this->Font, tab2Focused, tab2State); this->Parent->Text = "CustomTabControl Enabled"; } // Draw the selected tab item. protected: virtual void OnMouseDown(MouseEventArgs^ e) override { __super::OnMouseDown(e); if (!TabRenderer::IsSupported) { return; } // The first tab is clicked. Note that the height of the // selected tab rectangle is raised by 2, so that it draws // over the border of the tab page. if (tabItemRectangle1.Contains(e->Location)) { tab1State = TabItemState::Selected; tab2State = TabItemState::Normal; tabItemRectangle1.Height += 2; tabItemRectangle2.Height -= 2; tab1Focused = true; tab2Focused = false; } // The second tab is clicked. if (tabItemRectangle2.Contains(e->Location)) { tab2State = TabItemState::Selected; tab1State = TabItemState::Normal; tabItemRectangle2.Height += 2; tabItemRectangle1.Height -= 2; tab2Focused = true; tab1Focused = false; } Invalidate(); } }; public ref class Form1 : public Form { public: Form1() { CustomTabControl^ Tab1 = gcnew CustomTabControl(); Controls->Add(Tab1); this->Size = System::Drawing::Size(500, 500); } }; } [STAThread] int main() { // The call to EnableVisualStyles below does not affect whether // TabRenderer.IsSupported is true; as long as visual styles // are enabled by the operating system, IsSupported is true. Application::EnableVisualStyles(); Application::Run(gcnew TabRendererSample::Form1()); }
System.Windows.Forms.TabRenderer
プラットフォーム
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。
参照
TabRenderer メンバ
System.Windows.Forms 名前空間
System.Windows.Forms.VisualStyles.VisualStyleRenderer
System.Windows.Forms.VisualStyles.VisualStyleElement
- TabRenderer クラスのページへのリンク