CommonDialog 类

定义

指定用于在屏幕上显示对话框的基类。Specifies the base class used for displaying dialog boxes on the screen.

public ref class CommonDialog abstract : System::ComponentModel::Component
public abstract class CommonDialog : System.ComponentModel.Component
type CommonDialog = class
    inherit Component
Public MustInherit Class CommonDialog
Inherits Component
继承
派生

示例

下面的代码示例使用ColorDialogCommonDialog实现, 并说明了如何创建并显示一个对话框。The following code example uses the ColorDialog implementation of CommonDialog and illustrates creating and showing a dialog box. 此示例需要从现有窗体中调用方法, 该窗体具有TextBoxButton放置在该窗体上。This example requires that the method is called from within an existing form, which has a TextBox and Button placed on it.

private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      ColorDialog^ MyDialog = gcnew ColorDialog;
      // Keeps the user from selecting a custom color.
      MyDialog->AllowFullOpen = false;
      // Allows the user to get help. (The default is false.)
      MyDialog->ShowHelp = true;
      // Sets the initial color select to the current text color.
      MyDialog->Color = textBox1->ForeColor;
      
      // Update the text box color if the user clicks OK 
      if ( MyDialog->ShowDialog() == ::System::Windows::Forms::DialogResult::OK )
      {
         textBox1->ForeColor = MyDialog->Color;
      }
   }
private void button1_Click(object sender, System.EventArgs e)
 {
    ColorDialog MyDialog = new ColorDialog();
    // Keeps the user from selecting a custom color.
    MyDialog.AllowFullOpen = false ;
    // Allows the user to get help. (The default is false.)
    MyDialog.ShowHelp = true ;
    // Sets the initial color select to the current text color.
    MyDialog.Color = textBox1.ForeColor ;
    
    // Update the text box color if the user clicks OK 
    if (MyDialog.ShowDialog() == DialogResult.OK)
        textBox1.ForeColor =  MyDialog.Color;
 }
    
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim MyDialog As New ColorDialog()
    ' Keeps the user from selecting a custom color.
    MyDialog.AllowFullOpen = False
    ' Allows the user to get help. (The default is false.)
    MyDialog.ShowHelp = True
    ' Sets the initial color select to the current text color,
    MyDialog.Color = TextBox1.ForeColor

    ' Update the text box color if the user clicks OK 
    If (MyDialog.ShowDialog() = Windows.Forms.DialogResult.OK) Then
        TextBox1.ForeColor = MyDialog.Color
    End If
End Sub

注解

若要实现RunDialog继承类, 需要通过ShowDialog调用来创建特定的通用对话框。Inherited classes are required to implement RunDialog by invoking ShowDialog to create a specific common dialog box. 继承的类可以有HookProc选择地重写以实现特定的对话框挂钩功能。Inherited classes can optionally override HookProc to implement specific dialog box hook functionality.

构造函数

CommonDialog()

初始化 CommonDialog 类的新实例。Initializes a new instance of the CommonDialog class.

属性

CanRaiseEvents

获取一个指示组件是否可以引发事件的值。Gets a value indicating whether the component can raise an event.

(继承自 Component)
Container

获取 IContainer,它包含 ComponentGets the IContainer that contains the Component.

(继承自 Component)
DesignMode

获取一个值,用以指示 Component 当前是否处于设计模式。Gets a value that indicates whether the Component is currently in design mode.

(继承自 Component)
Events

获取附加到此 Component 的事件处理程序的列表。Gets the list of event handlers that are attached to this Component.

(继承自 Component)
Site

获取或设置 ComponentISiteGets or sets the ISite of the Component.

(继承自 Component)
Tag

获取或设置一个对象,该对象包含控件的数据。Gets or sets an object that contains data about the control.

方法

CreateObjRef(Type)

创建一个对象,该对象包含生成用于与远程对象进行通信的代理所需的全部相关信息。Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(继承自 MarshalByRefObject)
Dispose()

释放由 Component 使用的所有资源。Releases all resources used by the Component.

(继承自 Component)
Dispose(Boolean)

释放由 Component 占用的非托管资源,还可以另外再释放托管资源。Releases the unmanaged resources used by the Component and optionally releases the managed resources.

(继承自 Component)
Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(继承自 Object)
GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(继承自 Object)
GetLifetimeService()

检索控制此实例的生存期策略的当前生存期服务对象。Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(继承自 MarshalByRefObject)
GetService(Type)

返回一个对象,该对象表示由 Component 或它的 Container 提供的服务。Returns an object that represents a service provided by the Component or by its Container.

(继承自 Component)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
HookProc(IntPtr, Int32, IntPtr, IntPtr)

定义要重写的通用对话框挂钩过程,以便向通用对话框添加特定功能。Defines the common dialog box hook procedure that is overridden to add specific functionality to a common dialog box.

InitializeLifetimeService()

获取生存期服务对象来控制此实例的生存期策略。Obtains a lifetime service object to control the lifetime policy for this instance.

(继承自 MarshalByRefObject)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
MemberwiseClone(Boolean)

创建当前 MarshalByRefObject 对象的浅表副本。Creates a shallow copy of the current MarshalByRefObject object.

(继承自 MarshalByRefObject)
OnHelpRequest(EventArgs)

引发 HelpRequest 事件。Raises the HelpRequest event.

OwnerWndProc(IntPtr, Int32, IntPtr, IntPtr)

定义要重写的所有者窗口过程,以便向通用对话框添加特定功能。Defines the owner window procedure that is overridden to add specific functionality to a common dialog box.

Reset()

在派生类中被重写时,将通用对话框的属性重置为默认值。When overridden in a derived class, resets the properties of a common dialog box to their default values.

RunDialog(IntPtr)

在派生类中被重写时,指定通用对话框。When overridden in a derived class, specifies a common dialog box.

ShowDialog()

用默认的所有者运行通用对话框。Runs a common dialog box with a default owner.

ShowDialog(IWin32Window)

运行具有指定所有者的通用对话框。Runs a common dialog box with the specified owner.

ToString()

返回包含 Component 的名称的 String(如果有)。Returns a String containing the name of the Component, if any. 不应重写此方法。This method should not be overridden.

(继承自 Component)

事件

Disposed

当通过调用 Dispose() 方法释放组件时发生。Occurs when the component is disposed by a call to the Dispose() method.

(继承自 Component)
HelpRequest

当用户单击通用对话框中的“帮助”按钮时发生。Occurs when the user clicks the Help button on a common dialog box.

适用于