TabControl.HotTrack プロパティとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

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TabControl.HotTrack プロパティ

コントロールのタブの上にマウスを置いたときに、タブの外観が変化するかどうかを示す値を取得または設定します。

名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文

Visual Basic (宣言)

Public Property HotTrack As
 Boolean

Visual Basic (使用法)

Dim instance As TabControl
Dim value As Boolean

value = instance.HotTrack

instance.HotTrack = value

public bool HotTrack { get;
 set; }

C++

public:
property bool HotTrack {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_HotTrack ()

/** @property */
public void set_HotTrack (boolean value)

JScript

public function get HotTrack
 () : boolean

public function set HotTrack
 (value : boolean)

プロパティ値
タブの上にマウスを置くと、タブの外観が変化する場合は true。それ以外の場合は false。既定値は false です。

解説

タブの上にマウスを置いたときに、タブがどの色に変わるかは、ローカルコンピュータのシステムカラーによって決まります。システムカラーを変更するには、[コントロールパネル] を使用します。

使用例

2 つの TabPage オブジェクトのある TabControl を作成する例を次に示します。HotTrack プロパティは true に設定され、マウスをタブの上に置いたときに、タブ Text である myTabPage1 または myTabPage2 が強調表示されます。

この例では、System.Drawing 名前空間と System.Windows.Forms 名前空間を使用します。

Visual Basic

Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits Form
    Private tabControl1 As TabControl
    Private tabPage1 As TabPage
    Private tabPage2 As TabPage

    Private Sub MyTabs()
        Me.tabControl1 = New TabControl()
        Me.tabPage1 = New TabPage()
        Me.tabPage2 = New TabPage()

        Me.tabControl1.Controls.AddRange(New
 Control() {Me.tabPage1, Me.tabPage2})
        Me.tabControl1.Padding = New Point(15,
 10)
        Me.tabControl1.Location = New Point(35,
 25)
        Me.tabControl1.Size = New Size(220,
 220)

        ' Highlights TabPage.Text when the mouse passes over tabs.
        Me.tabControl1.HotTrack = True

        Me.tabPage1.Text = "myTabPage1"
        Me.tabPage2.Text = "myTabPage2"

        Me.Size = New Size(300, 300)
        Me.Controls.AddRange(New Control()
 {Me.tabControl1})
    End Sub

    Public Sub New()
        MyTabs()
    End Sub

    Shared Sub Main()
        Application.Run(New Form1())
    End Sub
End Class

using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    private TabControl tabControl1;
    private TabPage tabPage1;
    private TabPage tabPage2;

    private void MyTabs()
    {
        this.tabControl1 = new TabControl();
        this.tabPage1 = new TabPage();
        this.tabPage2 = new TabPage();

        this.tabControl1.Controls.AddRange(new
 Control[] {
            this.tabPage1,
            this.tabPage2});
        this.tabControl1.Padding = new Point(15,
 10);
        this.tabControl1.Location = new Point(35,
 25);
        this.tabControl1.Size = new Size(220,
 220);

        // Highlights TabPage.Text when the mouse passes over tabs.
        this.tabControl1.HotTrack = true;
    
        this.tabPage1.Text = "myTabPage1";
        this.tabPage2.Text = "myTabPage2";

        this.Size = new Size(300, 300);
        this.Controls.AddRange(new Control[]
 {
            this.tabControl1});
    }
    
    public Form1()
    {
        MyTabs();
    }

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

C++

using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public
 Form
{
private:
   TabControl^ tabControl1;
   TabPage^ tabPage1;
   TabPage^ tabPage2;
   void MyTabs()
   {
      this->tabControl1 = gcnew TabControl;
      this->tabPage1 = gcnew TabPage;
      this->tabPage2 = gcnew TabPage;
      array<Control^>^tabControls = {this->tabPage1,this->tabPage2};
      this->tabControl1->Controls->AddRange( tabControls
 );
      this->tabControl1->Padding = Point(15,10);
      this->tabControl1->Location = Point(35,25);
      this->tabControl1->Size = System::Drawing::Size( 220,
 220 );
      
      // Highlights TabPage::Text when the mouse passes over tabs.
      this->tabControl1->HotTrack = true;
      this->tabPage1->Text = "myTabPage1";
      this->tabPage2->Text = "myTabPage2";
      this->Size = System::Drawing::Size( 300, 300 );
      array<Control^>^formControls = {this->tabControl1};
      this->Controls->AddRange( formControls );
   }


public:
   Form1()
   {
      MyTabs();
   }

};

int main()
{
   Application::Run( gcnew Form1 );
}

import System.Drawing.*;
import System.Windows.Forms.*;

public class Form1 extends Form
{
    private TabControl tabControl1;
    private TabPage tabPage1;
    private TabPage tabPage2;

    private void MyTabs()
    {
        this.tabControl1 = new TabControl();
        this.tabPage1 = new TabPage();
        this.tabPage2 = new TabPage();
        this.tabControl1.get_Controls().AddRange(new
 Control[] {
            this.tabPage1, this.tabPage2 });
        this.tabControl1.set_Padding(new Point(15,
 10));
        this.tabControl1.set_Location(new Point(35,
 25));
        this.tabControl1.set_Size(new Size(220,
 220));

        // Highlights TabPage.Text when the mouse passes over tabs.
        this.tabControl1.set_HotTrack(true);
        this.tabPage1.set_Text("myTabPage1");
        this.tabPage2.set_Text("myTabPage2");
        this.set_Size(new Size(300, 300));
        this.get_Controls().AddRange(new Control[]
 { this.tabControl1 });
    } //MyTabs

    public Form1()
    {
        MyTabs();
    } //Form1

    public static void main(String[]
 args)
    {
        Application.Run(new Form1());
    } //main
} //Form1