Font 類別

定義

public ref class Font sealed : MarshalByRefObject, ICloneable, IDisposable, System::Runtime::Serialization::ISerializable

[System.ComponentModel.TypeConverter(typeof(System.Drawing.FontConverter))]
[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
[System.ComponentModel.TypeConverter("System.Drawing.FontConverter, System.Windows.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51")]
public sealed class Font : MarshalByRefObject, ICloneable, IDisposable, System.Runtime.Serialization.ISerializable

type Font = class
    inherit MarshalByRefObject
    interface ICloneable
    interface ISerializable
    interface IDisposable

Public NotInheritable Class Font
Inherits MarshalByRefObject
Implements ICloneable, IDisposable, ISerializable

繼承

Object

MarshalByRefObject

Font

屬性

TypeConverterAttribute ComVisibleAttribute SerializableAttribute TypeConverterAttribute

實作

ICloneable IDisposable ISerializable

範例

下列程式碼範例示範Font如何使用此函式Size和、 SizeInPoints和Unit屬性。The following code example demonstrates how to use the Font constructor and the Size, SizeInPoints, and Unit properties. 這個範例是設計來搭配 Windows Form 使用, 其中ComboBox包含名ComboBox1為的, 其中填入了「大」和「小型」的字串, 以及Label名Label1為的。This example is designed to be used with a Windows Form that contains a ComboBox named ComboBox1 that is populated with the strings "Bigger" and "Smaller" and a Label named Label1. 將下列程式碼貼入表單, 並將ComboBox1_SelectedIndexChanged方法與ComboBox控制項SelectedIndexChanged的事件產生關聯。Paste the following code into the form and associate the ComboBox1_SelectedIndexChanged method with the SelectedIndexChanged event of the ComboBox control.

private:
    void ComboBox1_SelectedIndexChanged(System::Object^ sender,
        System::EventArgs^ e)
    {

        // Cast the sender object back to a ComboBox.
        ComboBox^ ComboBox1 = (ComboBox^) sender;

        // Retrieve the selected item.
        String^ selectedString = (String^) ComboBox1->SelectedItem;

        // Convert it to lowercase.
        selectedString = selectedString->ToLower();

        // Declare the current size.
        float currentSize;

        // If Bigger is selected, get the current size from the 
        // Size property and increase it. Reset the font to the
        //  new size, using the current unit.
        if (selectedString == "bigger")
        {
            currentSize = Label1->Font->Size;
            currentSize += 2.0F;
            Label1->Font =gcnew System::Drawing::Font(Label1->Font->Name, 
                currentSize, Label1->Font->Style, Label1->Font->Unit);

        }
        // If Smaller is selected, get the current size, in
        // points, and decrease it by 2.  Reset the font with
        // the new size in points.
        if (selectedString == "smaller")
        {
            currentSize = Label1->Font->Size;
            currentSize -= 2.0F;
            Label1->Font = gcnew System::Drawing::Font(Label1->Font->Name, 
                currentSize, Label1->Font->Style);

        }
    }

private void ComboBox1_SelectedIndexChanged(System.Object sender, 
    System.EventArgs e)
{

    // Cast the sender object back to a ComboBox.
    ComboBox ComboBox1 = (ComboBox) sender;

    // Retrieve the selected item.
    string selectedString = (string) ComboBox1.SelectedItem;

    // Convert it to lowercase.
    selectedString = selectedString.ToLower();

    // Declare the current size.
    float currentSize;

    // Switch on the selected item. 
    switch(selectedString)
    {

            // If Bigger is selected, get the current size from the 
            // Size property and increase it. Reset the font to the
            //  new size, using the current unit.
        case "bigger":
            currentSize = Label1.Font.Size;
            currentSize += 2.0F;
            Label1.Font = new Font(Label1.Font.Name, currentSize, 
                Label1.Font.Style, Label1.Font.Unit);

            // If Smaller is selected, get the current size, in points,
            // and decrease it by 1.  Reset the font with the new size
            // in points.
            break;
        case "smaller":
            currentSize = Label1.Font.SizeInPoints;
            currentSize -= 1;
            Label1.Font = new Font(Label1.Font.Name, currentSize, 
                Label1.Font.Style);
            break;
    }
}

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged

    ' Cast the sender object back to a ComboBox.
    Dim ComboBox1 As ComboBox = CType(sender, ComboBox)

    ' Retrieve the selected item.
    Dim selectedString As String = CType(ComboBox1.SelectedItem, String)

    ' Convert it to lowercase.
    selectedString = selectedString.ToLower()

    ' Declare the current size.
    Dim currentSize As Single

    ' Switch on the selected item. 
    Select Case selectedString

        ' If Bigger is selected, get the current size from the 
        ' Size property and increase it. Reset the font to the
        '  new size, using the current unit.
    Case "bigger"
            currentSize = Label1.Font.Size
            currentSize += 2.0F
            Label1.Font = New Font(Label1.Font.Name, currentSize, _
                Label1.Font.Style, Label1.Font.Unit)

            ' If Smaller is selected, get the current size, in points,
            ' and decrease it by 1.  Reset the font with the new size
            ' in points.
        Case "smaller"
            currentSize = Label1.Font.SizeInPoints
            currentSize -= 1
            Label1.Font = New Font(Label1.Font.Name, currentSize, _
                Label1.Font.Style)
    End Select
End Sub

備註

如需如何建立字型的詳細資訊, 請參閱如何:結構字型家族和字型。For more information about how to construct fonts, see How to: Construct Font Families and Fonts. Windows Forms 應用程式支援 TrueType 字型, 而且對 OpenType 字型的支援有限。Windows Forms applications support TrueType fonts and have limited support for OpenType fonts. 如果您嘗試使用不支援的字型, 或未在執行應用程式的電腦上安裝字型, 則會替代 Microsoft Sans Serif 字型。If you attempt to use a font that is not supported, or the font is not installed on the machine that is running the application, the Microsoft Sans Serif font will be substituted.

建構函式

屬性

方法

明確介面實作

適用於

另請參閱

• 使用字型和文字Using Fonts and Text