DataGridViewImageColumn クラスとは何？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

索引トップ用語の索引ランキング

DataGridViewImageColumn クラス

メモ : このクラスは、.NET Framework version 2.0 で新しく追加されたものです。

DataGridViewImageCell オブジェクトのコレクションをホストします。

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 Class DataGridViewImageColumn
    Inherits DataGridViewColumn

Visual Basic (使用法)

Dim instance As DataGridViewImageColumn

public class DataGridViewImageColumn : DataGridViewColumn

C++

public ref class DataGridViewImageColumn :
 public DataGridViewColumn

public class DataGridViewImageColumn extends
 DataGridViewColumn

JScript

public class DataGridViewImageColumn extends
 DataGridViewColumn

解説

DataGridViewImageColumn クラスは、DataGridViewColumn クラスの特殊な型で、イメージを表示するセルを論理的にホストするために使用されます。DataGridViewImageColumn には、それと交差するすべての DataGridViewRow 内に、関連付けられた DataGridViewImageCell があります。各セルには、DataGridViewImageCell.ValueIsIcon プロパティの値に応じて、Image または Icon を格納できます。イメージに透明度を持たせる場合は、アイコンを表示すると便利です。

既定では、空のセルには既定のエラーグラフィックが表示されます。セルの値が null 参照 (Visual Basic では Nothing) または DBNull.Value である場合にこのグラフィックが表示されないようにするには、コントロールに行を追加する前に、DefaultCellStyle プロパティによって返されるセルスタイルオブジェクトの DataGridViewCellStyle.NullValue プロパティを null 参照 (Visual Basic では Nothing) に設定します。ただし、この設定は新しいレコードの行には適用されません。コントロールの AllowUserToAddRows プロパティの値が true である場合に、新しいレコードの行にエラーグラフィックが表示されないようにするには、コントロールの RowsAdded イベントのハンドラ内でセルの値を明示的に null 参照 (Visual Basic では Nothing) に設定するか、DefaultNewRowValue プロパティをオーバーライドして null 参照 (Visual Basic では Nothing) を返すようにした DataGridViewImageCell の派生型のインスタンスを、列の CellTemplate プロパティに設定する必要があります。

この列型の既定の並べ替えモードは、NotSortable です。

継承時の注意 DataGridViewImageColumn からクラスを派生させて新しいプロパティを追加する場合は、Clone メソッドをオーバーライドして、クローン操作時に新しいプロパティをコピーする必要があります。また、基本クラスの Clone メソッドも呼び出して、基本クラスのプロパティが新しいセルにコピーされるようにする必要があります。

使用例

次のコード例は、イメージを使用して三目並べゲームを作成する方法を示しています。

Visual Basic

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

Public Class TicTacToe
    Inherits System.Windows.Forms.Form

    Friend WithEvents dataGridView1 As
 DataGridView
    Friend WithEvents Button1 As
 Button = New Button()
    Friend WithEvents turn As
 Label = New Label()
    Friend WithEvents Button2 As
 Button = New Button()
    Friend WithEvents Button3 As
 Button = New Button()
    Friend WithEvents Button4 As
 Button = New Button()
    Friend WithEvents Button5 As
 Button = New Button()
    Friend WithEvents Panel1 As
 FlowLayoutPanel = New FlowLayoutPanel()

#Region "bitmaps"
    Private oImage As Byte()
 = { _
        &H42, &H4D, &HC6, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H76, &H0, &H0, &H0, &H28, &H0,
 _
        &H0, &H0, &HB, &H0, &H0, &H0, &HA, &H0, _
        &H0, &H0, &H1, &H0, &H4, &H0, &H0, &H0, _
        &H0, &H0, &H50, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H0, &H0, &H0, &H0, &H10, &H0,
 _
        &H0, &H0, &H10, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H0, &H0, &H80, &H0, &H0, &H80,
 _
        &H0, &H0, &H0, &H80, &H80, &H0, &H80, &H0,
 _
        &H0, &H0, &H80, &H0, &H80, &H0, &H80, &H80,
 _
        &H0, &H0, &HC0, &HC0, &HC0, &H0, &H80, &H80,
 _
        &H80, &H0, &H0, &H0, &HFF, &H0, &H0, &HFF,
 _
        &H0, &H0, &H0, &HFF, &HFF, &H0, &HFF, &H0,
 _
        &H0, &H0, &HFF, &H0, &HFF, &H0, &HFF, &HFF,
 _
        &H0, &H0, &HFF, &HFF, &HFF, &H0, &HFF, &HFF,
 _
        &H0, &HF, &HFF, &HF0, &H0, &H0, &HFF, &H0,
 _
        &HFF, &HF0, &HF, &HF0, &H0, &H0, &HF0, &HFF,
 _
        &HFF, &HFF, &HF0, &HF0, &H0, &H0, &HF0, &HFF,
 _
        &HFF, &HFF, &HF0, &HF0, &H0, &H0, &HF, &HFF,
 _
        &HFF, &HFF, &HFF, &H0, &H0, &H0, &HF, &HFF,
 _
        &HFF, &HFF, &HFF, &H0, &H0, &H0, &HF0, &HFF,
 _
        &HFF, &HFF, &HF0, &HF0, &H0, &H0, &HF0, &HFF,
 _
        &HFF, &HFF, &HF0, &HF0, &H0, &H0, &HFF, &H0,
 _
        &HFF, &HF0, &HF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &H0, &HF, &HFF, &HF0, &H0, &H0}

    Private xImage As Byte()
 = { _
        &H42, &H4D, &HC6, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H76, &H0, &H0, &H0, &H28, &H0,
 _
        &H0, &H0, &HB, &H0, &H0, &H0, &HA, &H0, _
        &H0, &H0, &H1, &H0, &H4, &H0, &H0, &H0, _
        &H0, &H0, &H50, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H0, &H0, &H0, &H0, &H10, &H0,
 _
        &H0, &H0, &H10, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H0, &H0, &H80, &H0, &H0, &H80,
 _
        &H0, &H0, &H0, &H80, &H80, &H0, &H80, &H0,
 _
        &H0, &H0, &H80, &H0, &H80, &H0, &H80, &H80,
 _
        &H0, &H0, &HC0, &HC0, &HC0, &H0, &H80, &H80,
 _
        &H80, &H0, &H0, &H0, &HFF, &H0, &H0, &HFF,
 _
        &H0, &H0, &H0, &HFF, &HFF, &H0, &HFF, &H0,
 _
        &H0, &H0, &HFF, &H0, &HFF, &H0, &HFF, &HFF,
 _
        &H0, &H0, &HFF, &HFF, &HFF, &H0, &HF0, &HFF,
 _
        &HFF, &HFF, &HF0, &HF0, &H0, &H0, &HFF, &HF,
 _
        &HFF, &HFF, &HF, &HF0, &H0, &H0, &HFF, &HF0,
 _
        &HFF, &HF0, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HF, &HF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HF, &HF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HF, &HF, &HFF, &HF0, &H0, &H0, &HFF, &HF0,
 _
        &HFF, &HF0, &HFF, &HF0, &H0, &H0, &HFF, &HF,
 _
        &HFF, &HFF, &HF, &HF0, &H0, &H0, &HF0, &HFF,
 _
        &HFF, &HFF, &HF0, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0}

    Private blankImage As Byte()
 = { _
        &H42, &H4D, &HC6, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H76, &H0, &H0, &H0, &H28, &H0,
 _
        &H0, &H0, &HB, &H0, &H0, &H0, &HA, &H0, _
        &H0, &H0, &H1, &H0, &H4, &H0, &H0, &H0, _
        &H0, &H0, &H50, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H0, &H0, &H0, &H0, &H10, &H0,
 _
        &H0, &H0, &H10, &H0, &H0, &H0, &H0, &H0,
 _
        &H0, &H0, &H0, &H0, &H80, &H0, &H0, &H80,
 _
        &H0, &H0, &H0, &H80, &H80, &H0, &H80, &H0,
 _
        &H0, &H0, &H80, &H0, &H80, &H0, &H80, &H80,
 _
        &H0, &H0, &HC0, &HC0, &HC0, &H0, &H80, &H80,
 _
        &H80, &H0, &H0, &H0, &HFF, &H0, &H0, &HFF,
 _
        &H0, &H0, &H0, &HFF, &HFF, &H0, &HFF, &H0,
 _
        &H0, &H0, &HFF, &H0, &HFF, &H0, &HFF, &HFF,
 _
        &H0, &H0, &HFF, &HFF, &HFF, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0, &HFF, &HFF,
 _
        &HFF, &HFF, &HFF, &HF0, &H0, &H0}
#End Region

    Private blank As Bitmap = New
 Bitmap( _
        New MemoryStream(blankImage))
    Private x As Bitmap = New
 Bitmap(New MemoryStream(xImage))
    Private o As Bitmap = New
 Bitmap(New MemoryStream(oImage))
    Private xString As String
 = "X's turn"
    Private oString As String
 = "O's turn"
    Private gameOverString As String
 = "Game Over"
    Private bitmapPadding As Integer
 = 6

    Private Sub InitializeDataGridView(ByVal
 sender As Object, _
        ByVal e As EventArgs) Handles
 Me.Load
        SuspendLayout()
        Panel1.SuspendLayout()

        ConfigureForm()
        SizeGrid()
        CreateColumns()
        CreateRows()

        ResumeLayout(False)
        Panel1.ResumeLayout(False)
    End Sub

    Private Sub ConfigureForm()
        AutoSize = True
        turn.Size = New System.Drawing.Size(75, 34)
        turn.TextAlign = ContentAlignment.MiddleLeft
        turn.Text = xString

        Panel1.FlowDirection = FlowDirection.TopDown
        Panel1.Location = New System.Drawing.Point(0, 8)
        Panel1.Size = New System.Drawing.Size(120, 196)

        ClientSize = New System.Drawing.Size(355, 200)
        Controls.Add(Me.Panel1)
        Text = "TicTacToe"

        dataGridView1 = New System.Windows.Forms.DataGridView
        dataGridView1.Location = New Point(120, 0)
        dataGridView1.AllowUserToAddRows = False
        Controls.Add(dataGridView1)
        SetupButtons()
    End Sub

    Private Sub SetupButtons()
        SetupButton(Button1, "Restart")
        Panel1.Controls.Add(Me.turn)
        SetupButton(Button2, "Increase Cell Size")
        SetupButton(Button3, "Stretch Images")
        SetupButton(Button4, "Zoom Images")
        SetupButton(Button5, "Normal Images")
    End Sub

    Private Sub SetupButton(ByVal
 button As Button, _
        ByVal buttonLabel As String)

        Panel1.Controls.Add(button)
        button.Text = buttonLabel
        button.AutoSize = True

    End Sub

    Private Sub CreateColumns()

        Dim imageColumn As DataGridViewImageColumn
        Dim columnCount As Integer
 = 0
        Do
            Dim unMarked As Bitmap = blank
            imageColumn = New DataGridViewImageColumn()

            ' Add twice the padding for the left and 
            ' right sides of the cell.
            imageColumn.Width = x.Width + 2 * bitmapPadding + 1

            imageColumn.Image = unMarked
            imageColumn.ImageLayout = DataGridViewImageCellLayout.NotSet
            imageColumn.Description = "default image layout"
            dataGridView1.Columns.Add(imageColumn)
            columnCount = columnCount + 1
        Loop While columnCount < 3
    End Sub

    Private Sub CreateRows()
        dataGridView1.Rows.Add()
        dataGridView1.Rows.Add()
        dataGridView1.Rows.Add()
    End Sub

    Private Sub SizeGrid()
        dataGridView1.ColumnHeadersVisible = False
        dataGridView1.RowHeadersVisible = False
        dataGridView1.AllowUserToResizeColumns = False
        dataGridView1.AllowUserToResizeRows = False
        dataGridView1.BorderStyle = BorderStyle.None

        ' Add twice the padding for the top and bottom of the cell.
 
        dataGridView1.RowTemplate.Height = x.Height + _
            2 * bitmapPadding + 1

        dataGridView1.AutoSize = True
    End Sub

    Private Sub reset(ByVal
 sender As Object, _
        ByVal e As EventArgs) _
        Handles Button1.Click

        dataGridView1.Dispose()
        InitializeDataGridView(Nothing, Nothing)
    End Sub

    Private Sub dataGridView1_CellClick(ByVal
 sender As Object, _
        ByVal e As DataGridViewCellEventArgs)
 _
        Handles dataGridView1.CellClick

        If turn.Text.Equals(gameOverString) Then
 Return

        Dim cell As DataGridViewImageCell =
 _
            CType(dataGridView1.Rows(e.RowIndex). _
                Cells(e.ColumnIndex), DataGridViewImageCell)
        If (cell.Value Is blank) Then
            If IsOsTurn() Then
                cell.Value = o
            Else
                cell.Value = x
            End If
            ToggleTurn()
            ToolTip(e)
        End If
        If IsAWin() Then
            turn.Text = gameOverString
        End If
    End Sub

    Private Sub dataGridView1_CellMouseEnter(ByVal
 sender As Object, _
        ByVal e As DataGridViewCellEventArgs)
 _
        Handles dataGridView1.CellMouseEnter

        Dim markingUnderMouse As Bitmap = _
            CType(dataGridView1.Rows(e.RowIndex). _
                Cells(e.ColumnIndex).Value, Bitmap)

        If markingUnderMouse Is blank Then
            dataGridView1.Cursor = Cursors.Default
        ElseIf markingUnderMouse Is o OrElse
 markingUnderMouse Is x Then
            dataGridView1.Cursor = Cursors.No
            ToolTip(e)
        End If
    End Sub

    Private Sub ToolTip( _
        ByVal e As DataGridViewCellEventArgs)

        Dim cell As DataGridViewImageCell =
 _
            CType(dataGridView1.Rows(e.RowIndex). _
            Cells(e.ColumnIndex), DataGridViewImageCell)
        Dim imageColumn As DataGridViewImageColumn
 = _
            CType(dataGridView1.Columns(cell.ColumnIndex), _
            DataGridViewImageColumn)

        cell.ToolTipText = imageColumn.Description
    End Sub

    Private Sub dataGridView1_CellMouseLeave(ByVal
 sender As Object, _
        ByVal e As DataGridViewCellEventArgs)
 _
        Handles dataGridView1.CellMouseLeave

        dataGridView1.Cursor = Cursors.Default
    End Sub

    Private Sub Stretch(ByVal
 sender As Object, _
        ByVal e As EventArgs) Handles
 Button3.Click

        For Each column As
 DataGridViewImageColumn _
            In dataGridView1.Columns
            column.ImageLayout = DataGridViewImageCellLayout.Stretch
            column.Description = "Stretched image layout"
        Next
    End Sub

    Private Sub ZoomToImage(ByVal
 sender As Object, _
        ByVal e As EventArgs) Handles
 Button4.Click

        For Each column As
 DataGridViewImageColumn _
            In dataGridView1.Columns
            column.ImageLayout = DataGridViewImageCellLayout.Zoom
            column.Description = "Zoomed image layout"
        Next
    End Sub

    Private Sub NormalImage(ByVal
 sender As Object, _
        ByVal e As EventArgs) Handles
 Button5.Click

        For Each column As
 DataGridViewImageColumn _
            In dataGridView1.Columns
            column.ImageLayout = DataGridViewImageCellLayout.Normal
            column.Description = "Normal image layout"
        Next
    End Sub

    Private Sub MakeCellsLarger(ByVal
 sender As Object, _
        ByVal e As EventArgs) Handles
 Button2.Click

        For Each column As
 DataGridViewImageColumn _
            In dataGridView1.Columns
            column.Width = column.Width * 2
        Next
        For Each row As
 DataGridViewRow In dataGridView1.Rows
            If row.IsNewRow Then Continue For
            row.Height = CInt(row.Height * 1.5)
        Next
    End Sub

    Private Function IsAWin() As
 Boolean
        If ARowIsSame() OrElse AColumnIsSame()
 OrElse ADiagonalIsSame() Then
            Return True
        Else 
            Return False
        End If
    End Function

    Private Function ARowIsSame() As
 Boolean
        Dim marking As Bitmap = Nothing
        If marking Is blank Then
 Return False
        For Each row As
 DataGridViewRow In dataGridView1.Rows
            If row.IsNewRow Then Continue For
            marking = CType(row.Cells(0).Value, Bitmap)
            If Not marking Is
 blank Then
                If marking Is row.Cells(1).Value
 AndAlso _
                    marking Is row.Cells(2).Value Then
 Return True
            End If
        Next
        Return False
    End Function

    Private Function AColumnIsSame() As
 Boolean

        Dim columnIndex As Integer
 = 0
        Dim marking As Bitmap
        Do
            marking = CType(dataGridView1.Rows(0).Cells(columnIndex).Value, _
                Bitmap)
            If Not marking Is
 blank Then
                If marking Is _
                    dataGridView1.Rows(1).Cells(columnIndex).Value _
                    AndAlso marking Is _
                    dataGridView1.Rows(2).Cells(columnIndex).Value _
                    Then Return True
            End If
            columnIndex = columnIndex + 1
        Loop While columnIndex < _
            dataGridView1.Columns.GetColumnCount( _
            DataGridViewElementStates.Visible)
        Return False
    End Function

    Private Function ADiagonalIsSame() As
 Boolean

        If LeftToRightDiagonalIsSame() Then
 Return True
        If RightToLeftDiagonalIsSame() Then
 Return True
        Return False
    End Function

    Private Function LeftToRightDiagonalIsSame()
 As Boolean
        Return IsDiagonalSame(0, 2)
    End Function

    Private Function RightToLeftDiagonalIsSame()
 As Boolean
        Return IsDiagonalSame(2, 0)
    End Function

    Private Function IsDiagonalSame(ByVal
 startingColumn As Integer, _
        ByVal lastColumn As Integer)
 As Boolean

        Dim marking As Bitmap = CType( _
            dataGridView1.Rows(0).Cells(startingColumn).Value, Bitmap)
        If marking Is blank Then
 Return False
        If marking Is dataGridView1.Rows(1).Cells(1).Value
 AndAlso _
            marking Is dataGridView1.Rows(2).Cells(lastColumn).Value
 _
            Then Return True
    End Function

    Private Sub ToggleTurn()
        If turn.Text.Equals(xString) Then turn.Text
 = oString _
        Else turn.Text = xString
    End Sub

    Private Function IsOsTurn() As
 Boolean
        If turn.Text.Equals(oString) Then Return
 True _
        Else  : Return False
    End Function

    <STAThread> Public Shared Sub
 Main()
        Application.Run(New TicTacToe())
    End Sub

End Class

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

public class TicTacToe : System.Windows.Forms.Form
{
    public TicTacToe()
    {
        blank = new Bitmap(new MemoryStream(blankImage));
        x = new Bitmap(new MemoryStream(xImage));
        o = new Bitmap(new MemoryStream(oImage));

        this.AutoSize = true;
        SetupButtons();
        InitializeDataGridView(null, null);
    }

    private DataGridView dataGridView1;
    private Button Button1 = new Button();
    private Label turn = new Label();
    private Button Button2 = new Button();
    private Button Button3 = new Button();
    private Button Button4 = new Button();
    private Button Button5 = new Button();
    private FlowLayoutPanel Panel1 = new FlowLayoutPanel();

    #region "bitmaps"
    private byte[] oImage = new byte[] {
        0x42, 0x4D, 0xC6, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x76, 
        0x0, 0x0, 0x0, 0x28, 0x0, 0x0, 0x0, 0xB, 0x0, 0x0, 0x0, 0xA,
        0x0, 0x0, 0x0, 0x1, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x50,
        0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10,
        0x0, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
        0x0, 0x80, 0x0, 0x0, 0x80, 0x0, 0x0, 0x0, 0x80, 0x80, 0x0, 
        0x80, 0x0, 0x0, 0x0, 0x80, 0x0, 0x80, 0x0, 0x80, 0x80, 0x0, 
        0x0, 0xC0, 0xC0, 0xC0, 0x0, 0x80, 0x80, 0x80, 0x0, 0x0, 0x0,
        0xFF, 0x0, 0x0, 0xFF, 0x0, 0x0, 0x0, 0xFF, 0xFF, 0x0, 0xFF, 
        0x0, 0x0, 0x0, 0xFF, 0x0, 0xFF, 0x0, 0xFF, 0xFF, 0x0, 0x0, 
        0xFF, 0xFF, 0xFF, 0x0, 0xFF, 0xFF, 0x0, 0xF, 0xFF, 0xF0, 
        0x0, 0x0, 0xFF, 0x0, 0xFF, 0xF0, 0xF, 0xF0, 0x0, 0x0, 0xF0, 
        0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0x0, 0x0, 0xF0, 0xFF, 0xFF, 
        0xFF, 0xF0, 0xF0, 0x0, 0x0, 0xF, 0xFF, 0xFF, 0xFF, 0xFF, 
        0x0, 0x0, 0x0, 0xF, 0xFF, 0xFF, 0xFF, 0xFF, 0x0, 0x0, 0x0, 
        0xF0, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0x0, 0x0, 0xF0, 0xFF, 
        0xFF, 0xFF, 0xF0, 0xF0, 0x0, 0x0, 0xFF, 0x0, 0xFF, 0xF0, 
        0xF, 0xF0, 0x0, 0x0, 0xFF, 0xFF, 0x0, 0xF, 0xFF, 0xF0, 0x0, 
        0x0};

    private byte[] xImage = new byte[]{
        0x42, 0x4D, 0xC6, 0x0, 0x0, 0x0, 0x0, 
        0x0, 0x0, 0x0, 0x76, 0x0, 0x0, 0x0, 0x28, 0x0, 0x0, 0x0, 
        0xB, 0x0, 0x0, 0x0, 0xA, 0x0, 0x0, 0x0, 0x1, 0x0, 0x4, 0x0, 
        0x0, 0x0, 0x0, 0x0, 0x50, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
        0x0, 0x0, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x10, 0x0, 0x0, 
        0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x80, 0x0, 0x0, 0x80, 
        0x0, 0x0, 0x0, 0x80, 0x80, 0x0, 0x80, 0x0, 0x0, 0x0, 0x80, 
        0x0, 0x80, 0x0, 0x80, 0x80, 0x0, 0x0, 0xC0, 0xC0, 0xC0, 0x0,
        0x80, 0x80, 0x80, 0x0, 0x0, 0x0, 0xFF, 0x0, 0x0, 0xFF, 0x0, 
        0x0, 0x0, 0xFF, 0xFF, 0x0, 0xFF, 0x0, 0x0, 0x0, 0xFF, 0x0, 
        0xFF, 0x0, 0xFF, 0xFF, 0x0, 0x0, 0xFF, 0xFF, 0xFF, 0x0, 
        0xF0, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0x0, 0x0, 0xFF, 0xF, 
        0xFF, 0xFF, 0xF, 0xF0, 0x0, 0x0, 0xFF, 0xF0, 0xFF, 0xF0, 
        0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xFF, 0xF, 0xF, 0xFF, 0xF0, 0x0,
        0x0, 0xFF, 0xFF, 0xF, 0xF, 0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xFF,
        0xF, 0xF, 0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xF0, 0xFF, 0xF0, 
        0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xF, 0xFF, 0xFF, 0xF, 0xF0, 0x0,
        0x0, 0xF0, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0x0, 0x0, 0xFF, 
        0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x0, 0x0};

    private byte[] blankImage = new byte[]
 {
        0x42, 0x4D, 0xC6, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x76, 
        0x0, 0x0, 0x0, 0x28, 0x0, 0x0, 0x0, 0xB, 0x0, 0x0, 0x0, 0xA,
        0x0, 0x0, 0x0, 0x1, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x50,
        0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x10,
        0x0, 0x0, 0x0, 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
        0x0, 0x80, 0x0, 0x0, 0x80, 0x0, 0x0, 0x0, 0x80, 0x80, 0x0, 
        0x80, 0x0, 0x0, 0x0, 0x80, 0x0, 0x80, 0x0, 0x80, 0x80, 0x0, 
        0x0, 0xC0, 0xC0, 0xC0, 0x0, 0x80, 0x80, 0x80, 0x0, 0x0, 0x0,
        0xFF, 0x0, 0x0, 0xFF, 0x0, 0x0, 0x0, 0xFF, 0xFF, 0x0, 0xFF, 
        0x0, 0x0, 0x0, 0xFF, 0x0, 0xFF, 0x0, 0xFF, 0xFF, 0x0, 0x0, 
        0xFF, 0xFF, 0xFF, 0x0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 
        0x0, 0x0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x0, 0x0, 
        0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xFF, 
        0xFF, 0xFF, 0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xFF, 0xFF, 0xFF, 
        0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 
        0x0, 0x0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x0, 0x0, 
        0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xFF, 
        0xFF, 0xFF, 0xFF, 0xF0, 0x0, 0x0, 0xFF, 0xFF, 0xFF, 0xFF, 
        0xFF, 0xF0, 0x0, 0x0};
    #endregion

    private Bitmap blank;
    private Bitmap x;
    private Bitmap o;
    private string xString = "X's turn";
    private string oString = "O's turn";
    private string gameOverString = "Game
 Over";
    private int bitmapPadding = 6;

    private void InitializeDataGridView(object
 sender,
        EventArgs e)
    {
        this.Panel1.SuspendLayout();
        this.SuspendLayout();

        ConfigureForm();
        SizeGrid();
        CreateColumns();
        CreateRows();

        this.Panel1.ResumeLayout(false);
        this.ResumeLayout(false);
    }

    private void ConfigureForm()
    {
        AutoSize = true;
        turn.Size = new System.Drawing.Size(75, 34);
        turn.TextAlign = ContentAlignment.MiddleLeft;
        turn.Text = xString;

        Panel1.Location = new System.Drawing.Point(0, 8);
        Panel1.Size = new System.Drawing.Size(120, 196);
        Panel1.FlowDirection = FlowDirection.TopDown;

        ClientSize = new System.Drawing.Size(355, 200);
        Controls.Add(this.Panel1);
        Text = "TicTacToe";

        dataGridView1 = new System.Windows.Forms.DataGridView();
        dataGridView1.Location = new Point(120, 0);
        dataGridView1.AllowUserToAddRows = false;
        dataGridView1.CellClick += new
            DataGridViewCellEventHandler(dataGridView1_CellClick);
        dataGridView1.CellMouseEnter += new
            DataGridViewCellEventHandler(dataGridView1_CellMouseEnter);
        dataGridView1.CellMouseLeave += new
            DataGridViewCellEventHandler(dataGridView1_CellMouseLeave);

        Controls.Add(dataGridView1);
    }

    private void SetupButtons()
    {
        Button1.AutoSize = true;
        SetupButton(Button1, "Restart", new EventHandler(Reset));
        Panel1.Controls.Add(turn);
        SetupButton(Button2, "Increase Cell Size", new
 EventHandler(MakeCellsLarger));
        SetupButton(Button3, "Stretch Images", new EventHandler(Stretch));
        SetupButton(Button4, "Zoom Images", new EventHandler(ZoomToImage));
        SetupButton(Button5, "Normal Images", new EventHandler(NormalImage));
    }

    private void SetupButton(Button button,
 string buttonLabel, EventHandler handler)
    {
        Panel1.Controls.Add(button);
        button.Text = buttonLabel;
        button.AutoSize = true;
        button.Click += handler;
    }

    private void CreateColumns()
    {
        DataGridViewImageColumn imageColumn;
        int columnCount = 0;
        do
        {
            Bitmap unMarked = blank;
            imageColumn = new DataGridViewImageColumn();

            //Add twice the padding for the left and 
            //right sides of the cell.
            imageColumn.Width = x.Width + 2 * bitmapPadding + 1;

            imageColumn.Image = unMarked;
            dataGridView1.Columns.Add(imageColumn);
            columnCount = columnCount + 1;
        }
        while (columnCount < 3);
    }

    private void CreateRows()
    {
        dataGridView1.Rows.Add();
        dataGridView1.Rows.Add();
        dataGridView1.Rows.Add();
    }

    private void SizeGrid()
    {
        dataGridView1.ColumnHeadersVisible = false;
        dataGridView1.RowHeadersVisible = false;
        dataGridView1.AllowUserToResizeColumns = false;;
        dataGridView1.AllowUserToResizeRows = false;
        dataGridView1.BorderStyle = BorderStyle.None;

        //Add twice the padding for the top of the cell 
        //and the bottom.
        dataGridView1.RowTemplate.Height = x.Height +
            2 * bitmapPadding + 1;

        dataGridView1.AutoSize = true;
    }

    private void Reset(object sender, System.EventArgs
 e)
    {
        dataGridView1.Dispose();
        InitializeDataGridView(null, null);
    }

    private void dataGridView1_CellClick(object
 sender,
        DataGridViewCellEventArgs e)
    {

        if (turn.Text.Equals(gameOverString)) { return;
 }

        DataGridViewImageCell cell = (DataGridViewImageCell)
            dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex];

        if (cell.Value == blank)
        {
            if (IsOsTurn())
            {
                cell.Value = o;
            }
            else
            {
                cell.Value = x;
            }
            ToggleTurn();
        }
        if (IsAWin())
        {
            turn.Text = gameOverString;
        }
    }

    private void dataGridView1_CellMouseEnter(object
 sender,
        DataGridViewCellEventArgs e)
    {
        Bitmap markingUnderMouse = (Bitmap)dataGridView1.
               Rows[e.RowIndex].
               Cells[e.ColumnIndex].Value;

        if (markingUnderMouse == blank)
        {
            dataGridView1.Cursor = Cursors.Default;
        }
        else if (markingUnderMouse == o ||
 markingUnderMouse == x)
        {
            dataGridView1.Cursor = Cursors.No;
            ToolTip(e, true);
        }
    }

    private void ToolTip(DataGridViewCellEventArgs
 e, bool showTip)
    {
        DataGridViewImageCell cell = (DataGridViewImageCell)
            dataGridView1
            .Rows[e.RowIndex].Cells[e.ColumnIndex];
        DataGridViewImageColumn imageColumn =
            (DataGridViewImageColumn)
            dataGridView1.Columns[cell.ColumnIndex];

        if (showTip) cell.ToolTipText = imageColumn.Description;
        else { cell.ToolTipText = String.Empty; }
    }

    private void dataGridView1_CellMouseLeave(object
 sender,
        DataGridViewCellEventArgs e)
    {
        ToolTip(e, false);
        dataGridView1.Cursor = Cursors.Default;
    }

    private void Stretch(object sender, EventArgs
 e)
    {
        foreach (DataGridViewImageColumn column in
            dataGridView1.Columns)
        {
            column.ImageLayout = DataGridViewImageCellLayout.Stretch;
            column.Description = "Stretched";
        }
    }

    private void ZoomToImage(object sender,
 EventArgs e)
    {

        foreach (DataGridViewImageColumn column in
            dataGridView1.Columns)
        {
            column.ImageLayout = DataGridViewImageCellLayout.Zoom;
            column.Description = "Zoomed";
        }
    }

    private void NormalImage(object sender,
 EventArgs e)
    {

        foreach (DataGridViewImageColumn column in
            dataGridView1.Columns)
        {
            column.ImageLayout = DataGridViewImageCellLayout.Normal;
            column.Description = "Normal";
        }
    }

    private void MakeCellsLarger(object sender,
 EventArgs e)
    {
        foreach (DataGridViewImageColumn column in
            dataGridView1.Columns)
        {
            column.Width = column.Width * 2;
        }
        foreach (DataGridViewRow row in dataGridView1.Rows)
        {
            if (row.IsNewRow) break;
            row.Height = (int)(row.Height * 1.5);
        }
    }

    private bool IsAWin()
    {
        if (ARowIsSame() || AColumnIsSame() || ADiagonalIsSame())
            return true;
        else return false;
    }

    private bool ARowIsSame()
    {
        Bitmap marking = null;

        foreach (DataGridViewRow row in dataGridView1.Rows)
        {
            if (row.IsNewRow) break;
            marking = (Bitmap)row.Cells[0].Value;
            if (marking != blank)
            {
                if (marking == row.Cells[1].Value &&
                    marking == row.Cells[2].Value) return true;
            }
        }
        return false;
    }

    private bool AColumnIsSame()
    {
        int columnIndex = 0;
        Bitmap marking;
        do
        {
            marking = (Bitmap)
                dataGridView1.Rows[0].Cells[columnIndex].Value;
            if (marking != blank)
            {
                if (marking == (Bitmap)dataGridView1.Rows[1]
                    .Cells[columnIndex].Value
                    && marking == (Bitmap)dataGridView1.Rows[2].
                    Cells[columnIndex].Value) return true;
            }
            columnIndex = columnIndex + 1;
        }
        while (columnIndex < dataGridView1.Columns.GetColumnCount(
            DataGridViewElementStates.Visible));
        return false;
    }

    private bool ADiagonalIsSame()
    {
        if (LeftToRightDiagonalIsSame()) { return
 true; }
        if (RightToLeftDiagonalIsSame()) { return
 true; }
        return false;
    }

    private bool LeftToRightDiagonalIsSame()
    {
        return IsDiagonalSame(0, 2);
    }

    private bool RightToLeftDiagonalIsSame()
    {
        return IsDiagonalSame(2, 0);
    }

    private bool IsDiagonalSame(int
 startingColumn, int lastColumn)
    {
        Bitmap marking = (Bitmap)dataGridView1.Rows[0]
            .Cells[startingColumn].Value;

        if (marking == blank) return false;
        if (marking == dataGridView1.Rows[1].Cells[1]
            .Value && marking == dataGridView1.Rows[2]
            .Cells[lastColumn].Value) return true;

        return false;
    }

    private void ToggleTurn()
    {
        if (turn.Text.Equals(xString)) { turn.Text = oString;
 }
        else { turn.Text = xString; }
    }

    private bool IsOsTurn()
    {
        if (turn.Text.Equals(oString)) return
 true;
        return false;
    }

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

}

継承階層

System.Object
   System.Windows.Forms.DataGridViewElement
     System.Windows.Forms.DataGridViewBand
       System.Windows.Forms.DataGridViewColumn
        System.Windows.Forms.DataGridViewImageColumn

スレッドセーフ

この型の public static (Visual Basic では Shared) メンバはすべて、スレッドセーフです。インスタンスメンバの場合は、スレッドセーフであるとは限りません。

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。

バージョン情報

.NET Framework
サポート対象 : 2.0

参照

関連項目
DataGridViewImageColumn メンバ
System.Windows.Forms 名前空間
DataGridView クラス
DataGridViewColumn クラス
DataGridViewRow
DataGridViewImageCell クラス
DataGridViewImageCell.ValueIsIcon
Image
Icon
DataGridViewColumn.SortMode プロパティ

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DataGridViewImageColumn クラス

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