PictureBox.SizeMode プロパティ
イメージの表示方法を示します。
名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文
プロパティ値
PictureBoxSizeMode 値の 1 つ。既定値は Normal です。
例外
解説
使用例
プラットフォーム
バージョン情報
参照
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文Dim instance As PictureBox Dim value As PictureBoxSizeMode value = instance.SizeMode instance.SizeMode = value
[LocalizableAttribute(true)] public: property PictureBoxSizeMode SizeMode { PictureBoxSizeMode get (); void set (PictureBoxSizeMode value); }
/** @property */ public PictureBoxSizeMode get_SizeMode () /** @property */ public void set_SizeMode (PictureBoxSizeMode value)
public function get SizeMode () : PictureBoxSizeMode public function set SizeMode (value : PictureBoxSizeMode)
PictureBoxSizeMode 値の 1 つ。既定値は Normal です。
例外解説このプロパティの有効値は、PictureBoxSizeMode 列挙体から取得されます。既定の Normal モードでは、Image が PictureBox の左上隅に配置され、PictureBox に対して大きすぎるイメージ部分はクリップされます。StretchImage 値を使用すると、PictureBox に合わせてイメージの大きさが調整されます。
AutoSize 値を使用すると、コントロールのサイズがイメージに合わせて随時調整されます。CenterImage 値を使用すると、イメージがクライアント領域の中央に配置されます。
使用例PictureBox コントロールと ListView コントロールの使用方法を示すコード例を次に示します。PictureBox は、BorderStyle プロパティ (BorderStyle 列挙体を使用) と SizeMode プロパティ (PictureBoxSizeMode 列挙体を使用) を設定することにより初期化されます。ListView には、Samples Pictures ディレクトリからイメージが読み込まれます。ListView コントロールの MouseDown イベントを処理して項目が選択されているかどうかを判断する場合は、ListView.GetItemAt メソッドを使用します。項目が選択されている場合、その項目は、イベント ハンドラが Image プロパティを設定することにより表示されます。この例では、C:\Documents and Settings\All Users\Documents\My Pictures\Sample Pictures ディレクトリに JPG ファイルが存在していることを前提としています。この例を実行するには、コードをフォームに貼り付けて、フォームのコンストラクタまたは Load イベント処理メソッドで InitializePictureBox メソッドおよび PopulateListView メソッドを呼び出します。必ずすべてのイベントをイベント処理メソッドに関連付けるようにしてください。
Private Sub PopulateListView() ListView1.Width = 270 ListView1.Location = New System.Drawing.Point(10, 10) ' Declare and construct the ColumnHeader objects. Dim header1, header2 As ColumnHeader header1 = New ColumnHeader header2 = New ColumnHeader ' Set the text, alignment and width for each column header. header1.Text = "File name" header1.TextAlign = HorizontalAlignment.Left header1.Width = 70 header2.TextAlign = HorizontalAlignment.Left header2.Text = "Location" header2.Width = 200 ' Add the headers to the ListView control. ListView1.Columns.Add(header1) ListView1.Columns.Add(header2) ' Populate the ListView.Items property. ' Set the directory to the sample picture directory. Dim dirInfo As New System.IO.DirectoryInfo _ ("C:\Documents and Settings\All Users" _ & "\Documents\My Pictures\Sample Pictures") Dim file As System.IO.FileInfo ' Get the .jpg files from the directory Dim files() As System.io.FileInfo = dirInfo.GetFiles("*.jpg") ' Add each file name and full name including path ' to the ListView. If Not (files Is Nothing) Then For Each file In files Dim item As New ListViewItem(file.Name) item.SubItems.Add(file.FullName) ListView1.Items.Add(item) Next End If End Sub Private Sub InitializePictureBox() PictureBox1 = New PictureBox ' Set the location and size of the PictureBox control. Me.PictureBox1.Location = New System.Drawing.Point(70, 120) Me.PictureBox1.Size = New System.Drawing.Size(140, 140) Me.PictureBox1.TabStop = False ' Set the SizeMode property to the StretchImage value. This ' will shrink or enlarge the image as needed to fit into ' the PictureBox. Me.PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage ' Set the border style to a three-dimensional border. Me.PictureBox1.BorderStyle = BorderStyle.Fixed3D ' Add the PictureBox to the form. Me.Controls.Add(Me.PictureBox1) End Sub Private Sub ListView1_MouseDown(ByVal sender As Object, _ ByVal e As MouseEventArgs) Handles ListView1.MouseDown Dim selection As ListViewItem = ListView1.GetItemAt(e.X, e.Y) ' If the user selects an item in the ListView, display ' the image in the PictureBox. If Not (selection Is Nothing) Then PictureBox1.Image = System.Drawing.Image.FromFile _ (selection.SubItems(1).Text) End If End Sub
private void PopulateListView() { ListView1.Width = 270; ListView1.Location = new System.Drawing.Point(10, 10); // Declare and construct the ColumnHeader objects. ColumnHeader header1, header2; header1 = new ColumnHeader(); header2 = new ColumnHeader(); // Set the text, alignment and width for each column header. header1.Text = "File name"; header1.TextAlign = HorizontalAlignment.Left; header1.Width = 70; header2.TextAlign = HorizontalAlignment.Left; header2.Text = "Location"; header2.Width = 200; // Add the headers to the ListView control. ListView1.Columns.Add(header1); ListView1.Columns.Add(header2); // Populate the ListView.Items property. // Set the directory to the sample picture directory. System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo( "C:\\Documents and Settings\\All Users" + "\\Documents\\My Pictures\\Sample Pictures"); // Get the .jpg files from the directory System.IO.FileInfo[] files = dirInfo.GetFiles("*.jpg"); // Add each file name and full name including path // to the ListView. if (files != null) { foreach ( System.IO.FileInfo file in files ) { ListViewItem item = new ListViewItem(file.Name); item.SubItems.Add(file.FullName); ListView1.Items.Add(item); } } } private void InitializePictureBox() { PictureBox1 = new PictureBox(); // Set the location and size of the PictureBox control. this.PictureBox1.Location = new System.Drawing.Point(70, 120); this.PictureBox1.Size = new System.Drawing.Size(140, 140); this.PictureBox1.TabStop = false; // Set the SizeMode property to the StretchImage value. This // will shrink or enlarge the image as needed to fit into // the PictureBox. this.PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage; // Set the border style to a three-dimensional border. this.PictureBox1.BorderStyle = BorderStyle.Fixed3D; // Add the PictureBox to the form. this.Controls.Add(this.PictureBox1); } private void ListView1_MouseDown(object sender, MouseEventArgs e) { ListViewItem selection = ListView1.GetItemAt(e.X, e.Y); // If the user selects an item in the ListView, display // the image in the PictureBox. if (selection != null) { PictureBox1.Image = System.Drawing.Image.FromFile( selection.SubItems[1].Text); } }
private: void PopulateListView() { ListView1->Width = 270; ListView1->Location = System::Drawing::Point( 10, 10 ); // Declare and construct the ColumnHeader objects. ColumnHeader^ header1; ColumnHeader^ header2; header1 = gcnew ColumnHeader; header2 = gcnew ColumnHeader; // Set the text, alignment and width for each column header. header1->Text = "File name"; header1->TextAlign = HorizontalAlignment::Left; header1->Width = 70; header2->TextAlign = HorizontalAlignment::Left; header2->Text = "Location"; header2->Width = 200; // Add the headers to the ListView control. ListView1->Columns->Add( header1 ); ListView1->Columns->Add( header2 ); // Populate the ListView.Items property. // Set the directory to the sample picture directory. System::IO::DirectoryInfo^ dirInfo = gcnew System::IO::DirectoryInfo( "C:\\Documents and Settings\\All Users" "\\Documents\\My Pictures\\Sample Pictures" ); // Get the .jpg files from the directory array<System::IO::FileInfo^>^files = dirInfo->GetFiles( "*.jpg" ); // Add each file name and full name including path // to the ListView. if ( files != nullptr ) { System::Collections::IEnumerator^ myEnum = files->GetEnumerator(); while ( myEnum->MoveNext() ) { System::IO::FileInfo^ file = safe_cast<System::IO::FileInfo^>(myEnum->Current); ListViewItem^ item = gcnew ListViewItem( file->Name ); item->SubItems->Add( file->FullName ); ListView1->Items->Add( item ); } } } void InitializePictureBox() { PictureBox1 = gcnew PictureBox; // Set the location and size of the PictureBox control. this->PictureBox1->Location = System::Drawing::Point( 70, 120 ); this->PictureBox1->Size = System::Drawing::Size( 140, 140 ); this->PictureBox1->TabStop = false; // Set the SizeMode property to the StretchImage value. This // will shrink or enlarge the image as needed to fit into // the PictureBox. this->PictureBox1->SizeMode = PictureBoxSizeMode::StretchImage; // Set the border style to a three-dimensional border. this->PictureBox1->BorderStyle = BorderStyle::Fixed3D; // Add the PictureBox to the form. this->Controls->Add( this->PictureBox1 ); } void ListView1_MouseDown( Object^ /*sender*/, MouseEventArgs^ e ) { ListViewItem^ selection = ListView1->GetItemAt( e->X, e->Y ); // If the user selects an item in the ListView, display // the image in the PictureBox. if ( selection != nullptr ) { PictureBox1->Image = System::Drawing::Image::FromFile( selection->SubItems[ 1 ]->Text ); } }
private void PopulateListView() { listView1.set_Width(270); listView1.set_Location(new System.Drawing.Point(10, 10)); // Declare and construct the ColumnHeader objects. ColumnHeader header1, header2; header1 = new ColumnHeader(); header2 = new ColumnHeader(); // Set the text, alignment and width for each column header. header1.set_Text("File name"); header1.set_TextAlign(HorizontalAlignment.Left); header1.set_Width(70); header2.set_TextAlign(HorizontalAlignment.Left); header2.set_Text("Location"); header2.set_Width(200); // Add the headers to the ListView control. listView1.get_Columns().Add(header1); listView1.get_Columns().Add(header2); // Populate the ListView.Items property. // Set the directory to the sample picture directory. System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo("C:\\Documents and Settings\\All Users" + "\\Documents\\My Pictures\\Sample Pictures"); // Get the.jpg files from the directory System.IO.FileInfo files[] = dirInfo.GetFiles("*.jpg"); // Add each file name and full name including path // to the ListView. if (files != null) { for (int iCtr = 0; iCtr < files.length; iCtr++) { System.IO.FileInfo file = files[iCtr]; ListViewItem item = new ListViewItem(file.get_Name()); item.get_SubItems().Add(file.get_FullName()); listView1.get_Items().Add(item); } } } //PopulateListView private void InitializePictureBox() { pictureBox1 = new PictureBox(); // Set the location and size of the PictureBox control. this.pictureBox1.set_Location(new System.Drawing.Point(70, 120)); this.pictureBox1.set_Size(new System.Drawing.Size(140, 140)); this.pictureBox1.set_TabStop(false); // Set the SizeMode property to the StretchImage value. This // will shrink or enlarge the image as needed to fit into // the PictureBox. this.pictureBox1.set_SizeMode(PictureBoxSizeMode.StretchImage); // Set the border style to a three-dimensional border. this.pictureBox1.set_BorderStyle(BorderStyle.Fixed3D); // Add the PictureBox to the form. this.get_Controls().Add(this.pictureBox1); } //InitializePictureBox private void listView1_MouseDown(Object sender, MouseEventArgs e) { ListViewItem selection = listView1.GetItemAt(e.get_X(), e.get_Y()); // If the user selects an item in the ListView, display // the image in the PictureBox. if (selection != null) { pictureBox1.set_Image(System.Drawing.Image.FromFile( selection.get_SubItems().get_Item(1).get_Text())); } } //listView1_MouseDown
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。
バージョン情報参照PictureBoxSizeMode 列挙体
PictureBox 内でのイメージの配置方法を指定します。
名前空間: System.Windows.Forms
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文
メンバ
解説
使用例
プラットフォーム
バージョン情報
参照
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)
構文Public Enumeration PictureBoxSizeMode
メンバ| メンバ名 | 説明 | |
|---|---|---|
| AutoSize | PictureBox のサイズは、格納しているイメージと同じ大きさになります。 | |
.gif) | CenterImage | PictureBox がイメージより大きい場合、イメージは中央に表示されます。イメージの方が PictureBox より大きい場合、イメージは PictureBox の中央に配置され、外にはみ出した部分はクリップされます。 |
| Normal | イメージは、PictureBox の左上隅に配置されます。イメージを格納する PictureBox よりもイメージの方が大きい場合、イメージはクリップされます。 |
| StretchImage | PictureBox 内のイメージのサイズは、PictureBox のサイズに合うように調整されます。 |
| Zoom | イメージのサイズは、サイズ比率を維持したままで拡大または縮小します。 |
解説使用例PictureBox コントロールと ListView コントロールの使用方法を示すコード例を次に示します。PictureBox は、PictureBox.BorderStyle プロパティ (BorderStyle 列挙体を使用) と PictureBox.SizeMode プロパティ (PictureBoxSizeMode 列挙体を使用) を設定することにより初期化されます。ListView には、Samples ディレクトリからイメージが読み込まれます。ListView コントロールの MouseDown イベントを処理して項目が選択されているかどうかを判断する場合は、ListView.GetItemAt メソッドを使用します。項目が選択されている場合、その項目は、イベント ハンドラが PictureBox.Image プロパティを設定することにより表示されます。この例では、C:\documents and Settings\All Users\Documents\My Pictures\Sample Pictures ディレクトリに JPG ファイルが存在していることを前提としています。この例を実行するには、コードをフォームに貼り付けて、フォームのコンストラクタまたは Load イベント メソッドで InitializePictureBox メソッドおよび PopulateListView メソッドを呼び出します。必ずすべてのイベントをイベント処理メソッドに関連付けるようにしてください。
Private Sub PopulateListView() ListView1.Width = 270 ListView1.Location = New System.Drawing.Point(10, 10) ' Declare and construct the ColumnHeader objects. Dim header1, header2 As ColumnHeader header1 = New ColumnHeader header2 = New ColumnHeader ' Set the text, alignment and width for each column header. header1.Text = "File name" header1.TextAlign = HorizontalAlignment.Left header1.Width = 70 header2.TextAlign = HorizontalAlignment.Left header2.Text = "Location" header2.Width = 200 ' Add the headers to the ListView control. ListView1.Columns.Add(header1) ListView1.Columns.Add(header2) ' Populate the ListView.Items property. ' Set the directory to the sample picture directory. Dim dirInfo As New System.IO.DirectoryInfo _ ("C:\Documents and Settings\All Users" _ & "\Documents\My Pictures\Sample Pictures") Dim file As System.IO.FileInfo ' Get the .jpg files from the directory Dim files() As System.io.FileInfo = dirInfo.GetFiles("*.jpg") ' Add each file name and full name including path ' to the ListView. If Not (files Is Nothing) Then For Each file In files Dim item As New ListViewItem(file.Name) item.SubItems.Add(file.FullName) ListView1.Items.Add(item) Next End If End Sub Private Sub InitializePictureBox() PictureBox1 = New PictureBox ' Set the location and size of the PictureBox control. Me.PictureBox1.Location = New System.Drawing.Point(70, 120) Me.PictureBox1.Size = New System.Drawing.Size(140, 140) Me.PictureBox1.TabStop = False ' Set the SizeMode property to the StretchImage value. This ' will shrink or enlarge the image as needed to fit into ' the PictureBox. Me.PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage ' Set the border style to a three-dimensional border. Me.PictureBox1.BorderStyle = BorderStyle.Fixed3D ' Add the PictureBox to the form. Me.Controls.Add(Me.PictureBox1) End Sub Private Sub ListView1_MouseDown(ByVal sender As Object, _ ByVal e As MouseEventArgs) Handles ListView1.MouseDown Dim selection As ListViewItem = ListView1.GetItemAt(e.X, e.Y) ' If the user selects an item in the ListView, display ' the image in the PictureBox. If Not (selection Is Nothing) Then PictureBox1.Image = System.Drawing.Image.FromFile _ (selection.SubItems(1).Text) End If End Sub
private void PopulateListView() { ListView1.Width = 270; ListView1.Location = new System.Drawing.Point(10, 10); // Declare and construct the ColumnHeader objects. ColumnHeader header1, header2; header1 = new ColumnHeader(); header2 = new ColumnHeader(); // Set the text, alignment and width for each column header. header1.Text = "File name"; header1.TextAlign = HorizontalAlignment.Left; header1.Width = 70; header2.TextAlign = HorizontalAlignment.Left; header2.Text = "Location"; header2.Width = 200; // Add the headers to the ListView control. ListView1.Columns.Add(header1); ListView1.Columns.Add(header2); // Populate the ListView.Items property. // Set the directory to the sample picture directory. System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo( "C:\\Documents and Settings\\All Users" + "\\Documents\\My Pictures\\Sample Pictures"); // Get the .jpg files from the directory System.IO.FileInfo[] files = dirInfo.GetFiles("*.jpg"); // Add each file name and full name including path // to the ListView. if (files != null) { foreach ( System.IO.FileInfo file in files ) { ListViewItem item = new ListViewItem(file.Name); item.SubItems.Add(file.FullName); ListView1.Items.Add(item); } } } private void InitializePictureBox() { PictureBox1 = new PictureBox(); // Set the location and size of the PictureBox control. this.PictureBox1.Location = new System.Drawing.Point(70, 120); this.PictureBox1.Size = new System.Drawing.Size(140, 140); this.PictureBox1.TabStop = false; // Set the SizeMode property to the StretchImage value. This // will shrink or enlarge the image as needed to fit into // the PictureBox. this.PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage; // Set the border style to a three-dimensional border. this.PictureBox1.BorderStyle = BorderStyle.Fixed3D; // Add the PictureBox to the form. this.Controls.Add(this.PictureBox1); } private void ListView1_MouseDown(object sender, MouseEventArgs e) { ListViewItem selection = ListView1.GetItemAt(e.X, e.Y); // If the user selects an item in the ListView, display // the image in the PictureBox. if (selection != null) { PictureBox1.Image = System.Drawing.Image.FromFile( selection.SubItems[1].Text); } }
private: void PopulateListView() { ListView1->Width = 270; ListView1->Location = System::Drawing::Point( 10, 10 ); // Declare and construct the ColumnHeader objects. ColumnHeader^ header1; ColumnHeader^ header2; header1 = gcnew ColumnHeader; header2 = gcnew ColumnHeader; // Set the text, alignment and width for each column header. header1->Text = "File name"; header1->TextAlign = HorizontalAlignment::Left; header1->Width = 70; header2->TextAlign = HorizontalAlignment::Left; header2->Text = "Location"; header2->Width = 200; // Add the headers to the ListView control. ListView1->Columns->Add( header1 ); ListView1->Columns->Add( header2 ); // Populate the ListView.Items property. // Set the directory to the sample picture directory. System::IO::DirectoryInfo^ dirInfo = gcnew System::IO::DirectoryInfo( "C:\\Documents and Settings\\All Users" "\\Documents\\My Pictures\\Sample Pictures" ); // Get the .jpg files from the directory array<System::IO::FileInfo^>^files = dirInfo->GetFiles( "*.jpg" ); // Add each file name and full name including path // to the ListView. if ( files != nullptr ) { System::Collections::IEnumerator^ myEnum = files->GetEnumerator(); while ( myEnum->MoveNext() ) { System::IO::FileInfo^ file = safe_cast<System::IO::FileInfo^>(myEnum->Current); ListViewItem^ item = gcnew ListViewItem( file->Name ); item->SubItems->Add( file->FullName ); ListView1->Items->Add( item ); } } } void InitializePictureBox() { PictureBox1 = gcnew PictureBox; // Set the location and size of the PictureBox control. this->PictureBox1->Location = System::Drawing::Point( 70, 120 ); this->PictureBox1->Size = System::Drawing::Size( 140, 140 ); this->PictureBox1->TabStop = false; // Set the SizeMode property to the StretchImage value. This // will shrink or enlarge the image as needed to fit into // the PictureBox. this->PictureBox1->SizeMode = PictureBoxSizeMode::StretchImage; // Set the border style to a three-dimensional border. this->PictureBox1->BorderStyle = BorderStyle::Fixed3D; // Add the PictureBox to the form. this->Controls->Add( this->PictureBox1 ); } void ListView1_MouseDown( Object^ /*sender*/, MouseEventArgs^ e ) { ListViewItem^ selection = ListView1->GetItemAt( e->X, e->Y ); // If the user selects an item in the ListView, display // the image in the PictureBox. if ( selection != nullptr ) { PictureBox1->Image = System::Drawing::Image::FromFile( selection->SubItems[ 1 ]->Text ); } }
private void PopulateListView() { listView1.set_Width(270); listView1.set_Location(new System.Drawing.Point(10, 10)); // Declare and construct the ColumnHeader objects. ColumnHeader header1, header2; header1 = new ColumnHeader(); header2 = new ColumnHeader(); // Set the text, alignment and width for each column header. header1.set_Text("File name"); header1.set_TextAlign(HorizontalAlignment.Left); header1.set_Width(70); header2.set_TextAlign(HorizontalAlignment.Left); header2.set_Text("Location"); header2.set_Width(200); // Add the headers to the ListView control. listView1.get_Columns().Add(header1); listView1.get_Columns().Add(header2); // Populate the ListView.Items property. // Set the directory to the sample picture directory. System.IO.DirectoryInfo dirInfo = new System.IO.DirectoryInfo("C:\\Documents and Settings\\All Users" + "\\Documents\\My Pictures\\Sample Pictures"); // Get the.jpg files from the directory System.IO.FileInfo files[] = dirInfo.GetFiles("*.jpg"); // Add each file name and full name including path // to the ListView. if (files != null) { for (int iCtr = 0; iCtr < files.length; iCtr++) { System.IO.FileInfo file = files[iCtr]; ListViewItem item = new ListViewItem(file.get_Name()); item.get_SubItems().Add(file.get_FullName()); listView1.get_Items().Add(item); } } } //PopulateListView private void InitializePictureBox() { pictureBox1 = new PictureBox(); // Set the location and size of the PictureBox control. this.pictureBox1.set_Location(new System.Drawing.Point(70, 120)); this.pictureBox1.set_Size(new System.Drawing.Size(140, 140)); this.pictureBox1.set_TabStop(false); // Set the SizeMode property to the StretchImage value. This // will shrink or enlarge the image as needed to fit into // the PictureBox. this.pictureBox1.set_SizeMode(PictureBoxSizeMode.StretchImage); // Set the border style to a three-dimensional border. this.pictureBox1.set_BorderStyle(BorderStyle.Fixed3D); // Add the PictureBox to the form. this.get_Controls().Add(this.pictureBox1); } //InitializePictureBox private void listView1_MouseDown(Object sender, MouseEventArgs e) { ListViewItem selection = listView1.GetItemAt(e.get_X(), e.get_Y()); // If the user selects an item in the ListView, display // the image in the PictureBox. if (selection != null) { pictureBox1.set_Image(System.Drawing.Image.FromFile( selection.get_SubItems().get_Item(1).get_Text())); } } //listView1_MouseDown
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。
バージョン情報参照- PictureBoxSizeModeのページへのリンク
