ContainerControl.System.Windows.Forms.IContainerControl.ActivateControl メソッド
アセンブリ: System.Windows.Forms (system.windows.forms.dll 内)

Private Function System.Windows.Forms.IContainerControl.ActivateControl ( _ control As Control _ ) As Boolean Implements IContainerControl.ActivateControl
Dim instance As ContainerControl Dim control As Control Dim returnValue As Boolean returnValue = CType(instance, IContainerControl).ActivateControl(control)
private: virtual bool System.Windows.Forms.IContainerControl.ActivateControl ( Control^ control ) sealed = IContainerControl::ActivateControl
戻り値
コントロールが正常にアクティブにされた場合は true。それ以外の場合は false。

control パラメータは、コンテナ コントロールの子である必要があります。

ScrollableControl クラスから継承し、IContainerControl インターフェイスを実装する方法を次のコード例に示します。実装は、ActiveControl プロパティおよび ActivateControl メソッドに追加されます。
Imports System Imports System.Windows.Forms Imports System.Drawing Public Class MyContainerControl Inherits ScrollableControl Implements IContainerControl Private myActiveControl As Control Public Sub New() ' Make the container control Blue so it can be distinguished on the form. Me.BackColor = Color.Blue ' Make the container scrollable. Me.AutoScroll = True End Sub ' Add implementation to the IContainerControl.ActiveControl property. Public Property ActiveControl() As Control Implements IContainerControl.ActiveControl Get Return Me.myActiveControl End Get Set ' Make sure the control is a member of the ControlCollection. If Me.Controls.Contains(value) Then Me.myActiveControl = value End If End Set End Property ' Add implementation to the IContainerControl.ActivateControl(Control) method. public Function ActivateControl(active As Control) As Boolean Implements IContainerControl.ActivateControl If Me.Controls.Contains(active) Then ' Select the control and scroll the control into view if needed. active.Select() Me.ScrollControlIntoView(active) Me.myActiveControl = active Return True End If Return False End Function End Class
using System; using System.Windows.Forms; using System.Drawing; public class MyContainer : ScrollableControl, IContainerControl { private Control activeControl; public MyContainer() { // Make the container control Blue so it can be distinguished on the form. this.BackColor = Color.Blue; // Make the container scrollable. this.AutoScroll = true; } // Add implementation to the IContainerControl.ActiveControl property. public Control ActiveControl { get { return activeControl; } set { // Make sure the control is a member of the ControlCollection. if(this.Controls.Contains(value)) { activeControl = value; } } } // Add implementations to the IContainerControl.ActivateControl(Control) method. public bool ActivateControl(Control active) { if(this.Controls.Contains(active)) { // Select the control and scroll the control into view if needed. active.Select(); this.ScrollControlIntoView(active); this.activeControl = active; return true; } return false; } }
using namespace System; using namespace System::Windows::Forms; using namespace System::Drawing; public ref class MyContainer: public ScrollableControl, public IContainerControl { private: Control^ activeControl; public: MyContainer() { // Make the container control Blue so it can be distinguished on the form. this->BackColor = Color::Blue; // Make the container scrollable. this->AutoScroll = true; } property Control^ ActiveControl { // Add implementation to the IContainerControl.ActiveControl property. virtual Control^ get() { return activeControl; } virtual void set( Control^ value ) { // Make sure the control is a member of the ControlCollection. if ( this->Controls->Contains( value ) ) { activeControl = value; } } } // Add implementations to the IContainerControl.ActivateControl(Control) method. virtual bool ActivateControl( Control^ active ) { if ( this->Controls->Contains( active ) ) { // Select the control and scroll the control into view if needed. active->Select( ); this->ScrollControlIntoView( active ); this->activeControl = active; return true; } return false; } };
import System.*; import System.Windows.Forms.*; import System.Drawing.*; public class MyContainer extends ScrollableControl implements IContainerControl { private Control activeControl; public MyContainer() { // Make the container control Blue so it can be // distinguished on the form. this.set_BackColor(Color.get_Blue()); // Make the container scrollable. this.set_AutoScroll(true); } //MyContainer // Add implementation to the IContainerControl.ActiveControl property. /** @property */ public Control get_ActiveControl() { return activeControl; } //get_ActiveControl /** @property */ public void set_ActiveControl(Control value) { // Make sure the control is a member of the ControlCollection. if (this.get_Controls().Contains(value)) { activeControl = value; } } //set_ActiveControl // Add implementations to the IContainerControl. // ActivateControl(Control) method. public boolean ActivateControl(Control active) { if (this.get_Controls().Contains(active)) { // Select the control and scroll the control into view if needed. active.Select(); this.ScrollControlIntoView(active); this.activeControl = active; return true; } return false; } //ActivateControl } //MyContainer

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
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