Font.ToHfont 方法

定義

傳回這個 Font 的控制代碼。Returns a handle to this Font.

public:
 IntPtr ToHfont();
public IntPtr ToHfont ();
member this.ToHfont : unit -> nativeint
Public Function ToHfont () As IntPtr

傳回

這個 Font 的 Windows 控制代碼。A Windows handle to this Font.

例外狀況

作業失敗。The operation was unsuccessful.

範例

下列程式碼範例會建立Font , 然後取得該的Font控制碼。The following code example creates a Font and then gets a handle to that Font. 此範例的設計目的是要與 Windows Forms 搭配使用, PaintEventArgs而且它需要e, 這Paint是事件處理常式的參數。The example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler.

   //Reference the GDI DeleteObject method.
public:
   [System::Runtime::InteropServices::DllImport("GDI32.dll")]
   static bool DeleteObject( IntPtr objectHandle );
   void ToHfont_Example( PaintEventArgs^ /*e*/ )
   {
      // Create a Font object.
      System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",16 );

      // Get a handle to the Font object.
      IntPtr hFont = myFont->ToHfont();

      // Display a message box with the value of hFont.
      MessageBox::Show( hFont.ToString() );

      //Dispose of the hFont.
      DeleteObject( hFont );
   }

//Reference the GDI DeleteObject method.
    [System.Runtime.InteropServices.DllImport("GDI32.dll")]
    public static extern bool DeleteObject(IntPtr objectHandle); 

    public void ToHfont_Example(PaintEventArgs e)
    {
        // Create a Font object.
        Font myFont = new Font("Arial", 16);
                 
        // Get a handle to the Font object.
        IntPtr hFont = myFont.ToHfont();
                 
        // Display a message box with the value of hFont.
        MessageBox.Show(hFont.ToString());
        
        //Dispose of the hFont.
        DeleteObject(hFont);
    }

' Reference the DeleteObject method in the GDI library.
<System.Runtime.InteropServices.DllImportAttribute("GDI32.DLL")> _
Private Shared Function DeleteObject(ByVal objectHandle As IntPtr) As Boolean
End Function

Public Sub ToHfont_Example(ByVal e As PaintEventArgs)

    ' Create a Font object.
    Dim myFont As New Font("Arial", 16)

    ' Get a handle to the Font object.
    Dim hFont As IntPtr = myFont.ToHfont()

    ' Display a message box with the value of hFont.
    MessageBox.Show(hFont.ToString())

    ' Dispose of the hFont.
    DeleteObject(hFont)
End Sub

備註

使用這個方法時, 您必須Hfont GDIGDI DeleteObject使用方法來處置產生的, 以確保釋放資源。When using this method, you must dispose of the resulting Hfont using the GDIGDI DeleteObject method to ensure the resources are released.

安全性

SecurityPermission
用於存取未受管理的程式碼。for access to unmanaged code. 相關列舉:UnmanagedCodeRelated enumeration: UnmanagedCode

適用於