方法: FlowLayoutPanel コントロールで子コントロールを固定およびドッキングする

FlowLayoutPanel コントロールは、子コントロールの Anchor プロパティと Dock プロパティをサポートします。

FlowLayoutPanel コントロールで子コントロールを固定およびドッキングするには

1. フォームに FlowLayoutPanel コントロールを作成します。

2. FlowLayoutPanel コントロールの Width を 300に設定し、その FlowDirection を TopDownに設定します。

3. 2 つの Button コントロールを作成し、FlowLayoutPanel コントロールに配置します。

4. 最初のボタンの を 200設定します。

5. 2 番目のボタンの Dock プロパティを Fillに設定します。

   手記

   2 番目のボタンは、最初のボタンと同じ幅を想定しています。 FlowLayoutPanel コントロールの幅にまたがって伸縮しません。

6. 2 番目のボタンの Dock プロパティを Noneに設定します。 これにより、ボタンは元の幅に戻ります。

7. 2 番目のボタンの Anchor プロパティを Left, Rightに設定します。

   重要

   2 番目のボタンは、最初のボタンと同じ幅を想定しています。 FlowLayoutPanel コントロールの幅にまたがって伸縮しません。 これは、FlowLayoutPanel コントロールに固定およびドッキングするための一般的なルールです。垂直方向のフロー方向の場合、FlowLayoutPanel コントロールは、列の最も広い子コントロールから暗黙的な列の幅を計算します。 Anchor プロパティまたは Dock プロパティを持つこの列の他のすべてのコントロールは、この暗黙的な列に合わせて整列または引き伸ばされます。 この動作は、水平方向の流れ方向にも同様の方法で動作します。 FlowLayoutPanel コントロールは、その行の最も高い子コントロールから暗黙的な行の高さを計算し、この行内のすべてのドッキングまたは固定された子コントロールは、暗黙的な行に合わせて整列またはサイズ変更されます。

例

次の図は、FlowLayoutPanelの青いボタンを基準にして固定およびドッキングされる 4 つのボタンを示しています。 FlowDirection は LeftToRightです。

次の図は、FlowLayoutPanelの青いボタンを基準にして固定およびドッキングされる 4 つのボタンを示しています。 FlowDirection は TopDownです。

次のコード例は、FlowLayoutPanel コントロール内の Button コントロールのさまざまな Anchor プロパティ値を示しています。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;

public class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    private FlowLayoutPanel flowLayoutPanel3;
    private Label label2;
    private Button button11;
    private Button button12;
    private Button button13;
    private Button button14;
    private Button button15;
    private FlowLayoutPanel flowLayoutPanel1;
    private Label label1;
    private Button button1;
    private Button button2;
    private Button button3;
    private Button button4;
    private Button button5;

    private System.ComponentModel.IContainer components = null;

    protected override void Dispose(bool disposing)
    {
        if (disposing && (components != null))
        {
            components.Dispose();
        }
        base.Dispose(disposing);
    }

    private void InitializeComponent()
    {
        this.flowLayoutPanel3 = new System.Windows.Forms.FlowLayoutPanel();
        this.label2 = new System.Windows.Forms.Label();
        this.button11 = new System.Windows.Forms.Button();
        this.button12 = new System.Windows.Forms.Button();
        this.button13 = new System.Windows.Forms.Button();
        this.button14 = new System.Windows.Forms.Button();
        this.button15 = new System.Windows.Forms.Button();
        this.flowLayoutPanel1 = new System.Windows.Forms.FlowLayoutPanel();
        this.label1 = new System.Windows.Forms.Label();
        this.button1 = new System.Windows.Forms.Button();
        this.button2 = new System.Windows.Forms.Button();
        this.button3 = new System.Windows.Forms.Button();
        this.button4 = new System.Windows.Forms.Button();
        this.button5 = new System.Windows.Forms.Button();
        this.flowLayoutPanel3.SuspendLayout();
        this.flowLayoutPanel1.SuspendLayout();
        this.SuspendLayout();
        //
        // flowLayoutPanel3
        //
        this.flowLayoutPanel3.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                    | System.Windows.Forms.AnchorStyles.Left)
                    | System.Windows.Forms.AnchorStyles.Right)));
        this.flowLayoutPanel3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
        this.flowLayoutPanel3.Controls.Add(this.label2);
        this.flowLayoutPanel3.Controls.Add(this.button11);
        this.flowLayoutPanel3.Controls.Add(this.button12);
        this.flowLayoutPanel3.Controls.Add(this.button13);
        this.flowLayoutPanel3.Controls.Add(this.button14);
        this.flowLayoutPanel3.Controls.Add(this.button15);
        this.flowLayoutPanel3.Location = new System.Drawing.Point(12, 12);
        this.flowLayoutPanel3.Name = "flowLayoutPanel3";
        this.flowLayoutPanel3.Size = new System.Drawing.Size(631, 100);
        this.flowLayoutPanel3.TabIndex = 2;
        //
        // label2
        //
        this.label2.Anchor = System.Windows.Forms.AnchorStyles.None;
        this.label2.AutoSize = true;
        this.label2.Location = new System.Drawing.Point(3, 28);
        this.label2.Name = "label2";
        this.label2.Size = new System.Drawing.Size(138, 14);
        this.label2.TabIndex = 10;
        this.label2.Text = "FlowDirection=LeftToRight";
        //
        // button11
        //
        this.button11.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
        this.button11.AutoSize = true;
        this.button11.Location = new System.Drawing.Point(147, 44);
        this.button11.Name = "button11";
        this.button11.Size = new System.Drawing.Size(86, 23);
        this.button11.TabIndex = 5;
        this.button11.Text = "Anchor=Bottom";
        //
        // button12
        //
        this.button12.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)));
        this.button12.AutoSize = true;
        this.button12.Location = new System.Drawing.Point(239, 3);
        this.button12.Name = "button12";
        this.button12.Size = new System.Drawing.Size(111, 64);
        this.button12.TabIndex = 6;
        this.button12.Text = "Anchor=Top, Bottom";
        //
        // button13
        //
        this.button13.Anchor = System.Windows.Forms.AnchorStyles.None;
        this.button13.BackColor = System.Drawing.SystemColors.GradientActiveCaption;
        this.button13.Location = new System.Drawing.Point(356, 3);
        this.button13.Name = "button13";
        this.button13.Size = new System.Drawing.Size(75, 64);
        this.button13.TabIndex = 7;
        //
        // button14
        //
        this.button14.Dock = System.Windows.Forms.DockStyle.Bottom;
        this.button14.Location = new System.Drawing.Point(437, 44);
        this.button14.Name = "button14";
        this.button14.TabIndex = 8;
        this.button14.Text = "Dock=Bottom";
        //
        // button15
        //
        this.button15.Dock = System.Windows.Forms.DockStyle.Fill;
        this.button15.Location = new System.Drawing.Point(518, 3);
        this.button15.Name = "button15";
        this.button15.Size = new System.Drawing.Size(75, 64);
        this.button15.TabIndex = 9;
        this.button15.Text = "Dock=Fill";
        //
        // flowLayoutPanel1
        //
        this.flowLayoutPanel1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)
                    | System.Windows.Forms.AnchorStyles.Right)));
        this.flowLayoutPanel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
        this.flowLayoutPanel1.Controls.Add(this.label1);
        this.flowLayoutPanel1.Controls.Add(this.button1);
        this.flowLayoutPanel1.Controls.Add(this.button2);
        this.flowLayoutPanel1.Controls.Add(this.button3);
        this.flowLayoutPanel1.Controls.Add(this.button4);
        this.flowLayoutPanel1.Controls.Add(this.button5);
        this.flowLayoutPanel1.FlowDirection = System.Windows.Forms.FlowDirection.TopDown;
        this.flowLayoutPanel1.Location = new System.Drawing.Point(12, 118);
        this.flowLayoutPanel1.Name = "flowLayoutPanel1";
        this.flowLayoutPanel1.Size = new System.Drawing.Size(200, 209);
        this.flowLayoutPanel1.TabIndex = 3;
        //
        // label1
        //
        this.label1.AutoSize = true;
        this.label1.Location = new System.Drawing.Point(3, 3);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(128, 14);
        this.label1.TabIndex = 11;
        this.label1.Text = "FlowDirection=TopDown";
        //
        // button1
        //
        this.button1.Anchor = System.Windows.Forms.AnchorStyles.Right;
        this.button1.Location = new System.Drawing.Point(74, 23);
        this.button1.Name = "button1";
        this.button1.TabIndex = 5;
        this.button1.Text = "Anchor=Right";
        //
        // button2
        //
        this.button2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Left | System.Windows.Forms.AnchorStyles.Right)));
        this.button2.Location = new System.Drawing.Point(3, 52);
        this.button2.Name = "button2";
        this.button2.Size = new System.Drawing.Size(146, 23);
        this.button2.TabIndex = 6;
        this.button2.Text = "Anchor=Left, Right";
        //
        // button3
        //
        this.button3.BackColor = System.Drawing.SystemColors.GradientActiveCaption;
        this.button3.Location = new System.Drawing.Point(3, 81);
        this.button3.Name = "button3";
        this.button3.Size = new System.Drawing.Size(146, 23);
        this.button3.TabIndex = 7;
        //
        // button4
        //
        this.button4.Dock = System.Windows.Forms.DockStyle.Right;
        this.button4.Location = new System.Drawing.Point(74, 110);
        this.button4.Name = "button4";
        this.button4.TabIndex = 8;
        this.button4.Text = "Dock=Right";
        //
        // button5
        //
        this.button5.Dock = System.Windows.Forms.DockStyle.Fill;
        this.button5.Location = new System.Drawing.Point(3, 139);
        this.button5.Name = "button5";
        this.button5.Size = new System.Drawing.Size(146, 23);
        this.button5.TabIndex = 9;
        this.button5.Text = "Dock=Fill";
        //
        // Form1
        //
        this.ClientSize = new System.Drawing.Size(658, 341);
        this.Controls.Add(this.flowLayoutPanel1);
        this.Controls.Add(this.flowLayoutPanel3);
        this.Name = "Form1";
        this.Text = "Form1";
        this.flowLayoutPanel3.ResumeLayout(false);
        this.flowLayoutPanel3.PerformLayout();
        this.flowLayoutPanel1.ResumeLayout(false);
        this.flowLayoutPanel1.PerformLayout();
        this.ResumeLayout(false);
    }

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

Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Drawing
Imports System.Windows.Forms




Public Class Form1
   Inherits Form
   
   Public Sub New()
      InitializeComponent()
   End Sub
   Private flowLayoutPanel3 As FlowLayoutPanel
   Private label2 As Label
   Private button11 As Button
   Private button12 As Button
   Private button13 As Button
   Private button14 As Button
   Private button15 As Button
   Private flowLayoutPanel1 As FlowLayoutPanel
   Private label1 As Label
   Private button1 As Button
   Private button2 As Button
   Private button3 As Button
   Private button4 As Button
   Private button5 As Button
   
   Private components As System.ComponentModel.IContainer = Nothing
   
   
   Protected Overrides Sub Dispose(disposing As Boolean)
      If disposing AndAlso (components IsNot Nothing) Then
         components.Dispose()
      End If
      MyBase.Dispose(disposing)
   End Sub
   
   
   Private Sub InitializeComponent()
      Me.flowLayoutPanel3 = New System.Windows.Forms.FlowLayoutPanel()
      Me.label2 = New System.Windows.Forms.Label()
      Me.button11 = New System.Windows.Forms.Button()
      Me.button12 = New System.Windows.Forms.Button()
      Me.button13 = New System.Windows.Forms.Button()
      Me.button14 = New System.Windows.Forms.Button()
      Me.button15 = New System.Windows.Forms.Button()
      Me.flowLayoutPanel1 = New System.Windows.Forms.FlowLayoutPanel()
      Me.label1 = New System.Windows.Forms.Label()
      Me.button1 = New System.Windows.Forms.Button()
      Me.button2 = New System.Windows.Forms.Button()
      Me.button3 = New System.Windows.Forms.Button()
      Me.button4 = New System.Windows.Forms.Button()
      Me.button5 = New System.Windows.Forms.Button()
      Me.flowLayoutPanel3.SuspendLayout()
      Me.flowLayoutPanel1.SuspendLayout()
      Me.SuspendLayout()
      ' 
      ' flowLayoutPanel3
      ' 
      Me.flowLayoutPanel3.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
      Me.flowLayoutPanel3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
      Me.flowLayoutPanel3.Controls.Add(Me.label2)
      Me.flowLayoutPanel3.Controls.Add(Me.button11)
      Me.flowLayoutPanel3.Controls.Add(Me.button12)
      Me.flowLayoutPanel3.Controls.Add(Me.button13)
      Me.flowLayoutPanel3.Controls.Add(Me.button14)
      Me.flowLayoutPanel3.Controls.Add(Me.button15)
      Me.flowLayoutPanel3.Location = New System.Drawing.Point(12, 12)
      Me.flowLayoutPanel3.Name = "flowLayoutPanel3"
      Me.flowLayoutPanel3.Size = New System.Drawing.Size(631, 100)
      Me.flowLayoutPanel3.TabIndex = 2
      ' 
      ' label2
      ' 
      Me.label2.Anchor = System.Windows.Forms.AnchorStyles.None
      Me.label2.AutoSize = True
      Me.label2.Location = New System.Drawing.Point(3, 28)
      Me.label2.Name = "label2"
      Me.label2.Size = New System.Drawing.Size(138, 14)
      Me.label2.TabIndex = 10
      Me.label2.Text = "FlowDirection=LeftToRight"
      ' 
      ' button11
      ' 
      Me.button11.Anchor = System.Windows.Forms.AnchorStyles.Bottom
      Me.button11.AutoSize = True
      Me.button11.Location = New System.Drawing.Point(147, 44)
      Me.button11.Name = "button11"
      Me.button11.Size = New System.Drawing.Size(86, 23)
      Me.button11.TabIndex = 5
      Me.button11.Text = "Anchor=Bottom"
      ' 
      ' button12
      ' 
      Me.button12.Anchor = CType(System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom, System.Windows.Forms.AnchorStyles)
      Me.button12.AutoSize = True
      Me.button12.Location = New System.Drawing.Point(239, 3)
      Me.button12.Name = "button12"
      Me.button12.Size = New System.Drawing.Size(111, 64)
      Me.button12.TabIndex = 6
      Me.button12.Text = "Anchor=Top, Bottom"
      ' 
      ' button13
      ' 
      Me.button13.Anchor = System.Windows.Forms.AnchorStyles.None
      Me.button13.BackColor = System.Drawing.SystemColors.GradientActiveCaption
      Me.button13.Location = New System.Drawing.Point(356, 3)
      Me.button13.Name = "button13"
      Me.button13.Size = New System.Drawing.Size(75, 64)
      Me.button13.TabIndex = 7
      ' 
      ' button14
      ' 
      Me.button14.Dock = System.Windows.Forms.DockStyle.Bottom
      Me.button14.Location = New System.Drawing.Point(437, 44)
      Me.button14.Name = "button14"
      Me.button14.TabIndex = 8
      Me.button14.Text = "Dock=Bottom"
      ' 
      ' button15
      ' 
      Me.button15.Dock = System.Windows.Forms.DockStyle.Fill
      Me.button15.Location = New System.Drawing.Point(518, 3)
      Me.button15.Name = "button15"
      Me.button15.Size = New System.Drawing.Size(75, 64)
      Me.button15.TabIndex = 9
      Me.button15.Text = "Dock=Fill"
      ' 
      ' flowLayoutPanel1
      ' 
      Me.flowLayoutPanel1.Anchor = CType(System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
      Me.flowLayoutPanel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
      Me.flowLayoutPanel1.Controls.Add(Me.label1)
      Me.flowLayoutPanel1.Controls.Add(Me.button1)
      Me.flowLayoutPanel1.Controls.Add(Me.button2)
      Me.flowLayoutPanel1.Controls.Add(Me.button3)
      Me.flowLayoutPanel1.Controls.Add(Me.button4)
      Me.flowLayoutPanel1.Controls.Add(Me.button5)
      Me.flowLayoutPanel1.FlowDirection = System.Windows.Forms.FlowDirection.TopDown
      Me.flowLayoutPanel1.Location = New System.Drawing.Point(12, 118)
      Me.flowLayoutPanel1.Name = "flowLayoutPanel1"
      Me.flowLayoutPanel1.Size = New System.Drawing.Size(200, 209)
      Me.flowLayoutPanel1.TabIndex = 3
      ' 
      ' label1
      ' 
      Me.label1.AutoSize = True
      Me.label1.Location = New System.Drawing.Point(3, 3)
      Me.label1.Name = "label1"
      Me.label1.Size = New System.Drawing.Size(128, 14)
      Me.label1.TabIndex = 11
      Me.label1.Text = "FlowDirection=TopDown"
      ' 
      ' button1
      ' 
      Me.button1.Anchor = System.Windows.Forms.AnchorStyles.Right
      Me.button1.Location = New System.Drawing.Point(74, 23)
      Me.button1.Name = "button1"
      Me.button1.TabIndex = 5
      Me.button1.Text = "Anchor=Right"
      ' 
      ' button2
      ' 
      Me.button2.Anchor = CType(System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right, System.Windows.Forms.AnchorStyles)
      Me.button2.Location = New System.Drawing.Point(3, 52)
      Me.button2.Name = "button2"
      Me.button2.Size = New System.Drawing.Size(146, 23)
      Me.button2.TabIndex = 6
      Me.button2.Text = "Anchor=Left, Right"
      ' 
      ' button3
      ' 
      Me.button3.BackColor = System.Drawing.SystemColors.GradientActiveCaption
      Me.button3.Location = New System.Drawing.Point(3, 81)
      Me.button3.Name = "button3"
      Me.button3.Size = New System.Drawing.Size(146, 23)
      Me.button3.TabIndex = 7
      ' 
      ' button4
      ' 
      Me.button4.Dock = System.Windows.Forms.DockStyle.Right
      Me.button4.Location = New System.Drawing.Point(74, 110)
      Me.button4.Name = "button4"
      Me.button4.TabIndex = 8
      Me.button4.Text = "Dock=Right"
      ' 
      ' button5
      ' 
      Me.button5.Dock = System.Windows.Forms.DockStyle.Fill
      Me.button5.Location = New System.Drawing.Point(3, 139)
      Me.button5.Name = "button5"
      Me.button5.Size = New System.Drawing.Size(146, 23)
      Me.button5.TabIndex = 9
      Me.button5.Text = "Dock=Fill"
      ' 
      ' Form1
      ' 
      Me.ClientSize = New System.Drawing.Size(658, 341)
      Me.Controls.Add(flowLayoutPanel1)
      Me.Controls.Add(flowLayoutPanel3)
      Me.Name = "Form1"
      Me.Text = "Form1"
      Me.flowLayoutPanel3.ResumeLayout(False)
      Me.flowLayoutPanel3.PerformLayout()
      Me.flowLayoutPanel1.ResumeLayout(False)
      Me.flowLayoutPanel1.PerformLayout()
      Me.ResumeLayout(False)
   End Sub
    
   
   <STAThread()>  _
   Shared Sub Main()
      Application.EnableVisualStyles()
      Application.Run(New Form1())
   End Sub
End Class

コードのコンパイル

この例では、次のものが必要です。

• System、System.Data、System.Drawing、System.Windows.Forms アセンブリへの参照。

関連項目

• FlowLayoutPanel
• FlowLayoutPanel コントロールの概要