ToolStripItem.ContentRectangle 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

索引トップ用語の索引ランキング

ToolStripItem.ContentRectangle プロパティ

メモ : このプロパティは、.NET Framework version 2.0 で新しく追加されたものです。

背景の境界線を上書きせずに、テキスト、アイコンなどのコンテンツを ToolStripItem 内に配置できる領域を取得します。

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 ReadOnly Property
 ContentRectangle As Rectangle

Visual Basic (使用法)

Dim instance As ToolStripItem
Dim value As Rectangle

value = instance.ContentRectangle

public Rectangle ContentRectangle { get; }

C++

public:
property Rectangle ContentRectangle {
    Rectangle get ();
}

/** @property */
public Rectangle get_ContentRectangle ()

JScript

public function get ContentRectangle
 () : Rectangle

プロパティ値
ToolStripItem の境界線以外のコンテンツの位置とサイズを表す 4 つの整数を格納する Rectangle。

解説

ToolStripItem のカスタム描画を実行するには、ContentRectangle プロパティを使用します。

使用例

ContentRectangle プロパティを使ったカスタムレンダリングの方法を、次のコード例に示します。このコード例は、ToolStripItem クラスのトピックで取り上げているコード例の一部分です。

Visual Basic

   ' This utility method computes the layout of the 
   ' RolloverItem control's image area and the text area.
   ' For brevity, only the following settings are 
   ' supported:
   '
   ' ToolStripTextDirection.Horizontal
   ' TextImageRelation.ImageBeforeText 
   ' TextImageRelation.ImageBeforeText
   ' 
   ' It would not be difficult to support vertical text
   ' directions and other image/text relationships.
   Private Sub ComputeImageAndTextLayout()
      Dim cr As Rectangle = MyBase.ContentRectangle
      Dim img As Image = MyBase.Owner.ImageList.Images(MyBase.ImageKey)
      
      ' Compute the center of the item's ContentRectangle.
      Dim centerY As Integer
 = (cr.Height - img.Height) / 2
      
      ' Find the dimensions of the image and the text 
      ' areas of the item. The text occupies the space 
      ' not filled by the image. 
        If MyBase.TextImageRelation = _
        TextImageRelation.ImageBeforeText AndAlso _
        MyBase.TextDirection = ToolStripTextDirection.Horizontal
 Then

            imageRect = New Rectangle( _
            MyBase.ContentRectangle.Left, _
            centerY, _
            MyBase.Image.Width, _
            MyBase.Image.Height)

            textRect = New Rectangle( _
            imageRect.Width, _
            MyBase.ContentRectangle.Top, _
            MyBase.ContentRectangle.Width - imageRect.Width, _
            MyBase.ContentRectangle.Height)

        ElseIf MyBase.TextImageRelation = _
        TextImageRelation.TextBeforeImage AndAlso _
        MyBase.TextDirection = ToolStripTextDirection.Horizontal
 Then

            imageRect = New Rectangle( _
            MyBase.ContentRectangle.Right - MyBase.Image.Width,
 _
            centerY, _
            MyBase.Image.Width, _
            MyBase.Image.Height)

            textRect = New Rectangle( _
            MyBase.ContentRectangle.Left, _
            MyBase.ContentRectangle.Top, _
            imageRect.X, _
            MyBase.ContentRectangle.Bottom)

        End If
    End Sub
End Class

// This utility method computes the layout of the 
// RolloverItem control's image area and the text area.
// For brevity, only the following settings are 
// supported:
//
// ToolStripTextDirection.Horizontal
// TextImageRelation.ImageBeforeText 
// TextImageRelation.ImageBeforeText
// 
// It would not be difficult to support vertical text
// directions and other image/text relationships.
private void ComputeImageAndTextLayout()
{
    Rectangle cr = base.ContentRectangle;
    Image img = base.Owner.ImageList.Images[base.ImageKey];

    // Compute the center of the item's ContentRectangle.
    int centerY = (cr.Height - img.Height) / 2;

    // Find the dimensions of the image and the text 
    // areas of the item. The text occupies the space 
    // not filled by the image. 
    if (base.TextImageRelation == TextImageRelation.ImageBeforeText
 &&
        base.TextDirection == ToolStripTextDirection.Horizontal)
    {
        imageRect = new Rectangle(
            base.ContentRectangle.Left,
            centerY,
            base.Image.Width,
            base.Image.Height);

        textRect = new Rectangle(
            imageRect.Width,
            base.ContentRectangle.Top,
            base.ContentRectangle.Width - imageRect.Width,
            base.ContentRectangle.Height);
    }
    else if (base.TextImageRelation
 == TextImageRelation.TextBeforeImage &&
             base.TextDirection == ToolStripTextDirection.Horizontal)
    {
        imageRect = new Rectangle(
            base.ContentRectangle.Right - base.Image.Width
,
            centerY,
            base.Image.Width,
            base.Image.Height);

        textRect = new Rectangle(
            base.ContentRectangle.Left,
            base.ContentRectangle.Top,
            imageRect.X,
            base.ContentRectangle.Bottom);
    }
}