Font.ToHfont Metode

Definisi

Ruang nama:

System.Drawing

Rakitan:

System.Drawing.Common.dll

Paket:

System.Drawing.Common v9.0.0-rc.2.24474.1

Sumber:

Font.cs

Mengembalikan handel ke Fontini.

public:
 IntPtr ToHfont();

public IntPtr ToHfont ();

member this.ToHfont : unit -> nativeint

Public Function ToHfont () As IntPtr

Mengembalikan

IntPtr

nativeint

Handel Windows ke Fontini.

Pengecualian

Win32Exception

Operasi tidak berhasil.

Contoh

Contoh kode berikut membuat Font lalu mendapatkan handel ke Fonttersebut. Contoh ini dirancang untuk digunakan dengan Windows Forms, dan memerlukan PaintEventArgse, yang merupakan parameter penanganan aktivitas Paint.

   //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

Keterangan

Saat menggunakan metode ini, Anda harus membuang Hfont yang dihasilkan menggunakan metode DeleteObject GDI untuk memastikan sumber daya dirilis.