HelpProvider コンストラクタとは? わかりやすく解説

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HelpProvider コンストラクタ

HelpProvider クラス新しインスタンス初期化します。

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

public HelpProvider ()
public:
HelpProvider ()
public HelpProvider ()
public function HelpProvider ()
解説解説

HelpProvider クラスインスタンス作成したら、HelpNamespace プロパティ、SetHelpKeyword メソッド、および SetHelpNavigator メソッド使用してコントロールヘルプ トピック関連付けます。

使用例使用例

HelpProvider クラス使用して4 つアドレス フィールドを含むフォーム状況依存ヘルプ表示するコード例次に示します。この例では SetHelpString メソッド使用してヘルプツールヒント テキスト設定してます。状況依存ヘルプボタンクリックしてから、ヘルプ カーソルアドレス フィールド合わせてクリックすると、指定したテキストヘルプ ツールヒント表示されます。HelpNamespace プロパティmspaint.chm設定されているため、アドレス フィールドフォーカスがあるときに F1 キーを押すと、mspaint.chm ヘルプ ファイル表示されます。SetShowHelp メソッドは、各アドレス コントロールに対して呼び出されヘルプ内容存在するかどうか確認されます。

Imports System
Imports System.Drawing
Imports System.Windows.Forms

Public Class Form1
    Inherits System.Windows.Forms.Form
    Private addressTextBox As System.Windows.Forms.TextBox
    Private label2 As System.Windows.Forms.Label
    Private cityTextBox As System.Windows.Forms.TextBox
    Private label3 As System.Windows.Forms.Label
    Private stateTextBox As System.Windows.Forms.TextBox
    Private zipTextBox As System.Windows.Forms.TextBox
    Private helpProvider1 As System.Windows.Forms.HelpProvider
    Private helpLabel As System.Windows.Forms.Label

    <STAThread()>  _
    Shared Sub Main()
        Application.Run(New Form1())
    End Sub 'Main
    
    Public Sub New()
        Me.addressTextBox = New System.Windows.Forms.TextBox()
        Me.helpLabel = New System.Windows.Forms.Label()
        Me.label2 = New System.Windows.Forms.Label()
        Me.cityTextBox = New System.Windows.Forms.TextBox()
        Me.label3 = New System.Windows.Forms.Label()
        Me.stateTextBox = New System.Windows.Forms.TextBox()
        Me.zipTextBox = New System.Windows.Forms.TextBox()

        ' Help Label
        Me.helpLabel.Location = New System.Drawing.Point(8,
 80)
        Me.helpLabel.Size = New System.Drawing.Size(272,
 72)
        Me.helpLabel.TabIndex = 1
        Me.helpLabel.Text = "Click the Help
 button in the title bar, then click a control " & _
            "to see a Help tooltip for the control.  Click on
 a control and press F1 to invoke " & _
            "the Help system with a sample Help file."

        ' Address Label
        Me.label2.Location = New System.Drawing.Point(16,
 8)
        Me.label2.Size = New System.Drawing.Size(100,
 16)
        Me.label2.Text = "Address:"

        ' Comma Label
        Me.label3.Location = New System.Drawing.Point(136,
 56)
        Me.label3.Size = New System.Drawing.Size(16,
 16)
        Me.label3.Text = ","

        ' Creates the HelpProvider.
        Me.helpProvider1 = New System.Windows.Forms.HelpProvider()

        ' Tell the HelpProvider what controls to provide Help for, and
        ' what the Help string is.
        Me.helpProvider1.SetHelpString(Me.addressTextBox,
 "Enter the street address in this text box.")
        Me.helpProvider1.SetShowHelp(Me.addressTextBox,
 True)

        Me.helpProvider1.SetHelpString(Me.cityTextBox,
 "Enter the city here.")
        Me.helpProvider1.SetShowHelp(Me.cityTextBox,
 True)

        Me.helpProvider1.SetHelpString(Me.stateTextBox,
 "Enter the state in this text box.")
        Me.helpProvider1.SetShowHelp(Me.stateTextBox,
 True)

        Me.helpProvider1.SetHelpString(Me.zipTextBox,
 "Enter the zip code here.")
        Me.helpProvider1.SetShowHelp(Me.zipTextBox,
 True)

        ' Sets what the Help file will be for the HelpProvider.
        Me.helpProvider1.HelpNamespace = "mspaint.chm"

        ' Set properties for the different address fields.

        ' Address TextBox
        Me.addressTextBox.Location = New System.Drawing.Point(16,
 24)
        Me.addressTextBox.Size = New System.Drawing.Size(264,
 20)
        Me.addressTextBox.TabIndex = 0
        Me.addressTextBox.Text = ""


        ' City TextBox
        Me.cityTextBox.Location = New System.Drawing.Point(16,
 48)
        Me.cityTextBox.Size = New System.Drawing.Size(120,
 20)
        Me.cityTextBox.TabIndex = 3
        Me.cityTextBox.Text = ""

        ' State TextBox
        Me.stateTextBox.Location = New System.Drawing.Point(152,
 48)
        Me.stateTextBox.MaxLength = 2
        Me.stateTextBox.Size = New System.Drawing.Size(32,
 20)
        Me.stateTextBox.TabIndex = 5
        Me.stateTextBox.Text = ""

        ' Zip TextBox
        Me.zipTextBox.Location = New System.Drawing.Point(192,
 48)
        Me.zipTextBox.Size = New System.Drawing.Size(88,
 20)
        Me.zipTextBox.TabIndex = 6
        Me.zipTextBox.Text = ""

        ' Add the controls to the form.
        Me.Controls.AddRange(New System.Windows.Forms.Control()
 { Me.zipTextBox, _
                                       Me.stateTextBox, Me.label3,
 _
                                       Me.cityTextBox, Me.label2,
 _
                                       Me.helpLabel, Me.addressTextBox})

        ' Set the form to look like a dialog, and show the HelpButton.
    
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog
        Me.HelpButton = True
        Me.MaximizeBox = False
        Me.MinimizeBox = False
        Me.ClientSize = New System.Drawing.Size(292,
 160)
        Me.Text = "Help Provider Demonstration"

    End Sub 'New        
End Class 'Form1
using System;
using System.Drawing;
using System.Windows.Forms;

public class Form1 : System.Windows.Forms.Form
{
    private System.Windows.Forms.TextBox addressTextBox;
    private System.Windows.Forms.Label label2;
    private System.Windows.Forms.TextBox cityTextBox;
    private System.Windows.Forms.Label label3;
    private System.Windows.Forms.TextBox stateTextBox;
    private System.Windows.Forms.TextBox zipTextBox;
    private System.Windows.Forms.HelpProvider helpProvider1;
    private System.Windows.Forms.Label helpLabel;

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

    public Form1()
    {
        this.addressTextBox = new System.Windows.Forms.TextBox();
        this.helpLabel = new System.Windows.Forms.Label();
        this.label2 = new System.Windows.Forms.Label();
        this.cityTextBox = new System.Windows.Forms.TextBox();
        this.label3 = new System.Windows.Forms.Label();
        this.stateTextBox = new System.Windows.Forms.TextBox();
        this.zipTextBox = new System.Windows.Forms.TextBox();
        
        // Help Label
        this.helpLabel.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
        this.helpLabel.Location = new System.Drawing.Point(8,
 80);
        this.helpLabel.Size = new System.Drawing.Size(272,
 72);
        this.helpLabel.Text = "Click the Help button in
 the title bar, then click a control " + 
            "to see a Help tooltip for the control.  Click
 on a control and press F1 to invoke " +
            "the Help system with a sample Help file.";

        // Address Label
        this.label2.Location = new System.Drawing.Point(16,
 8);
        this.label2.Size = new System.Drawing.Size(100,
 16);
        this.label2.Text = "Address:";

        // Comma Label
        this.label3.Location = new System.Drawing.Point(136,
 56);
        this.label3.Size = new System.Drawing.Size(16,
 16);
        this.label3.Text = ",";

        // Create the HelpProvider.
        this.helpProvider1 = new System.Windows.Forms.HelpProvider();

        // Tell the HelpProvider what controls to provide help for,
 and
        // what the help string is.
        this.helpProvider1.SetShowHelp(this.addressTextBox,
 true);
        this.helpProvider1.SetHelpString(this.addressTextBox,
 "Enter the street address in this text
 box.");

        this.helpProvider1.SetShowHelp(this.cityTextBox,
 true);
        this.helpProvider1.SetHelpString(this.cityTextBox,
 "Enter the city here.");

        this.helpProvider1.SetShowHelp(this.stateTextBox,
 true);
        this.helpProvider1.SetHelpString(this.stateTextBox,
 "Enter the state in this text box.");

        this.helpProvider1.SetShowHelp(this.zipTextBox,
 true);
        this.helpProvider1.SetHelpString(this.zipTextBox,
 "Enter the zip code here.");

        // Set what the Help file will be for the HelpProvider.
        this.helpProvider1.HelpNamespace = "mspaint.chm";

        // Sets properties for the different address fields.

        // Address TextBox
        this.addressTextBox.Location = new
 System.Drawing.Point(16, 24);
        this.addressTextBox.Size = new System.Drawing.Size(264,
 20);
        this.addressTextBox.TabIndex = 0;
        this.addressTextBox.Text = "";

        // City TextBox
        this.cityTextBox.Location = new System.Drawing.Point(16,
 48);
        this.cityTextBox.Size = new System.Drawing.Size(120,
 20);
        this.cityTextBox.TabIndex = 3;
        this.cityTextBox.Text = "";

        // State TextBox
        this.stateTextBox.Location = new System.Drawing.Point(152,
 48);
        this.stateTextBox.MaxLength = 2;
        this.stateTextBox.Size = new System.Drawing.Size(32,
 20);
        this.stateTextBox.TabIndex = 5;
        this.stateTextBox.Text = "";

        // Zip TextBox
        this.zipTextBox.Location = new System.Drawing.Point(192,
 48);
        this.zipTextBox.Size = new System.Drawing.Size(88,
 20);
        this.zipTextBox.TabIndex = 6;
        this.zipTextBox.Text = "";

        // Add the controls to the form.
        this.Controls.AddRange(new System.Windows.Forms.Control[]
 {
                                    this.zipTextBox, this.stateTextBox
,
                                    this.label3, this.cityTextBox
,
                                    this.label2, this.helpLabel
,
                                    this.addressTextBox});

        // Set the form to look like a dialog, and show the HelpButton.
    
        this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
        this.HelpButton = true;
        this.MaximizeBox = false;
        this.MinimizeBox = false;
        this.ClientSize = new System.Drawing.Size(292,
 160);
        this.Text = "Help Provider Demonstration";

    }
}
#using <System.dll>
#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
public ref class Form1: public
 System::Windows::Forms::Form
{
private:
   System::Windows::Forms::TextBox^ addressTextBox;
   System::Windows::Forms::Label ^ label2;
   System::Windows::Forms::TextBox^ cityTextBox;
   System::Windows::Forms::Label ^ label3;
   System::Windows::Forms::TextBox^ stateTextBox;
   System::Windows::Forms::TextBox^ zipTextBox;
   System::Windows::Forms::HelpProvider^ helpProvider1;
   System::Windows::Forms::Label ^ helpLabel;

public:
   Form1()
   {
      this->addressTextBox = gcnew System::Windows::Forms::TextBox;
      this->helpLabel = gcnew System::Windows::Forms::Label;
      this->label2 = gcnew System::Windows::Forms::Label;
      this->cityTextBox = gcnew System::Windows::Forms::TextBox;
      this->label3 = gcnew System::Windows::Forms::Label;
      this->stateTextBox = gcnew System::Windows::Forms::TextBox;
      this->zipTextBox = gcnew System::Windows::Forms::TextBox;
      
      // Help Label
      this->helpLabel->BorderStyle = System::Windows::Forms::BorderStyle::Fixed3D;
      this->helpLabel->Location = System::Drawing::Point(
 8, 80 );
      this->helpLabel->Size = System::Drawing::Size( 272,
 72 );
      this->helpLabel->Text = "Click the Help button
 in the title bar, then click a control to see a Help tooltip
 for the control.  Click on a control and press F1 to invoke the Help system with a sample Help file.";
      
      // Address Label
      this->label2->Location = System::Drawing::Point( 16,
 8 );
      this->label2->Size = System::Drawing::Size( 100, 16
 );
      this->label2->Text = "Address:";
      
      // Comma Label
      this->label3->Location = System::Drawing::Point( 136,
 56 );
      this->label3->Size = System::Drawing::Size( 16, 16
 );
      this->label3->Text = ", ";
      
      // Create the HelpProvider.
      this->helpProvider1 = gcnew System::Windows::Forms::HelpProvider;
      
      // Tell the HelpProvider what controls to provide help for, and
      // what the help String* is.
      this->helpProvider1->SetShowHelp( this->addressTextBox,
 true );
      this->helpProvider1->SetHelpString( this->addressTextBox,
 "Enter the street address in this text
 box." );
      this->helpProvider1->SetShowHelp( this->cityTextBox,
 true );
      this->helpProvider1->SetHelpString( this->cityTextBox,
 "Enter the city here." );
      this->helpProvider1->SetShowHelp( this->stateTextBox,
 true );
      this->helpProvider1->SetHelpString( this->stateTextBox,
 "Enter the state in this text box."
 );
      this->helpProvider1->SetShowHelp( this->zipTextBox,
 true );
      this->helpProvider1->SetHelpString( this->zipTextBox,
 "Enter the zip code here." );
      
      // Set what the Help file will be for the HelpProvider.
      this->helpProvider1->HelpNamespace = "mspaint.chm";
      
      // Sets properties for the different address fields.
      // Address TextBox
      this->addressTextBox->Location = System::Drawing::Point(
 16, 24 );
      this->addressTextBox->Size = System::Drawing::Size(
 264, 20 );
      this->addressTextBox->TabIndex = 0;
      this->addressTextBox->Text = "";
      
      // City TextBox
      this->cityTextBox->Location = System::Drawing::Point(
 16, 48 );
      this->cityTextBox->Size = System::Drawing::Size( 120,
 20 );
      this->cityTextBox->TabIndex = 3;
      this->cityTextBox->Text = "";
      
      // State TextBox
      this->stateTextBox->Location = System::Drawing::Point(
 152, 48 );
      this->stateTextBox->MaxLength = 2;
      this->stateTextBox->Size = System::Drawing::Size(
 32, 20 );
      this->stateTextBox->TabIndex = 5;
      this->stateTextBox->Text = "";
      
      // Zip TextBox
      this->zipTextBox->Location = System::Drawing::Point(
 192, 48 );
      this->zipTextBox->Size = System::Drawing::Size( 88,
 20 );
      this->zipTextBox->TabIndex = 6;
      this->zipTextBox->Text = "";
      
      // Add the controls to the form.
      array<System::Windows::Forms::Control^>^temp0 = {this->zipTextBox
,this->stateTextBox,this->label3,this->cityTextBox
,this->label2,this->helpLabel,this->addressTextBox};
      this->Controls->AddRange( temp0 );
      
      // Set the form to look like a dialog, and show the HelpButton.
      this->FormBorderStyle = System::Windows::Forms::FormBorderStyle::FixedDialog;
      this->HelpButton = true;
      this->MaximizeBox = false;
      this->MinimizeBox = false;
      this->ClientSize = System::Drawing::Size( 292, 160 );
      this->Text = "Help Provider Demonstration";
   }

};


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

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

public class Form1 extends System.Windows.Forms.Form
{
    private System.Windows.Forms.TextBox addressTextBox;
    private System.Windows.Forms.Label label2;
    private System.Windows.Forms.TextBox cityTextBox;
    private System.Windows.Forms.Label label3;
    private System.Windows.Forms.TextBox stateTextBox;
    private System.Windows.Forms.TextBox zipTextBox;
    private System.Windows.Forms.HelpProvider helpProvider1;
    private System.Windows.Forms.Label helpLabel;

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

    public Form1()
    {
        this.addressTextBox = new System.Windows.Forms.TextBox();
        this.helpLabel = new System.Windows.Forms.Label();
        this.label2 = new System.Windows.Forms.Label();
        this.cityTextBox = new System.Windows.Forms.TextBox();
        this.label3 = new System.Windows.Forms.Label();
        this.stateTextBox = new System.Windows.Forms.TextBox();
        this.zipTextBox = new System.Windows.Forms.TextBox();
        // Help Label
        this.helpLabel.set_BorderStyle(
            System.Windows.Forms.BorderStyle.Fixed3D);
        this.helpLabel.set_Location(new System.Drawing.Point(8,
 80));
        this.helpLabel.set_Size(new System.Drawing.Size(272,
 72));
        this.helpLabel.set_Text("Click the Help button in
 the title bar," 
            + " then click a control to see a Help tooltip for
 the " 
            + "control.  Click on a control and press F1 to invoke " 
            + "the Help system with a sample Help file.");
        // Address Label
        this.label2.set_Location(new System.Drawing.Point(16,
 8));
        this.label2.set_Size(new System.Drawing.Size(100,
 16));
        this.label2.set_Text("Address:");
        // Comma Label
        this.label3.set_Location(new System.Drawing.Point(136,
 56));
        this.label3.set_Size(new System.Drawing.Size(16,
 16));
        this.label3.set_Text(",");

        // Create the HelpProvider.
        this.helpProvider1 = new System.Windows.Forms.HelpProvider();

        // Tell the HelpProvider what controls to provide help for,
 and
        // what the help string is.
        this.helpProvider1.SetShowHelp(this.addressTextBox,
 true);
        this.helpProvider1.SetHelpString(this.addressTextBox,
 
            "Enter the street address in this
 text box.");

        this.helpProvider1.SetShowHelp(this.cityTextBox,
 true);
        this.helpProvider1.SetHelpString(this.cityTextBox,
 
            "Enter the city here.");

        this.helpProvider1.SetShowHelp(this.stateTextBox,
 true);
        this.helpProvider1.SetHelpString(this.stateTextBox,
 
            "Enter the state in this text
 box.");

        this.helpProvider1.SetShowHelp(this.zipTextBox,
 true);
        this.helpProvider1.SetHelpString(this.zipTextBox,
 
            "Enter the zip code here.");
        
        // Set what the Help file will be for the HelpProvider.
        this.helpProvider1.set_HelpNamespace("mspaint.chm");
        // Sets properties for the different address fields.
        // Address TextBox
        this.addressTextBox.set_Location(new
 System.Drawing.Point(16, 24));
        this.addressTextBox.set_Size(new System.Drawing.Size(264,
 20));
        this.addressTextBox.set_TabIndex(0);
        this.addressTextBox.set_Text("");
        // City TextBox
        this.cityTextBox.set_Location(new System.Drawing.Point(16,
 48));
        this.cityTextBox.set_Size(new System.Drawing.Size(120,
 20));
        this.cityTextBox.set_TabIndex(3);
        this.cityTextBox.set_Text("");
        // State TextBox
        this.stateTextBox.set_Location(new
 System.Drawing.Point(152, 48));
        this.stateTextBox.set_MaxLength(2);
        this.stateTextBox.set_Size(new System.Drawing.Size(32,
 20));
        this.stateTextBox.set_TabIndex(5);
        this.stateTextBox.set_Text("");
        // Zip TextBox
        this.zipTextBox.set_Location(new System.Drawing.Point(192,
 48));
        this.zipTextBox.set_Size(new System.Drawing.Size(88,
 20));
        this.zipTextBox.set_TabIndex(6);
        this.zipTextBox.set_Text("");
        // Add the controls to the form.
        this.get_Controls().AddRange(new System.Windows.Forms.Control[]
 { 
            this.zipTextBox, this.stateTextBox,
 this.label3, this.cityTextBox, 
            this.label2, this.helpLabel, this.addressTextBox
 });
        // Set the form to look like a dialog, and show the HelpButton.
    
        this.set_FormBorderStyle(
            System.Windows.Forms.FormBorderStyle.FixedDialog);
        this.set_HelpButton(true);
        this.set_MaximizeBox(false);
        this.set_MinimizeBox(false);
        this.set_ClientSize(new System.Drawing.Size(292,
 160));
        this.set_Text("Help Provider Demonstration");
    } //Form1 
} //Form1
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