Bitmap.FromHicon(IntPtr) Metodo

Definizione

Spazio dei nomi:
System.Drawing
Assembly:
System.Drawing.Common.dll
Assembly:
System.Drawing.dll
Pacchetto:
System.Drawing.Common v11.0.0-preview.4.26230.115
Origine:
Bitmap.cs
Origine:
Bitmap.cs
Origine:
Bitmap.cs
Origine:
Bitmap.cs
Origine:
Bitmap.cs
Origine:
Bitmap.cs
Origine:
Bitmap.cs
Origine:
Bitmap.cs

Crea un oggetto Bitmap da un handle di Windows a un'icona.

public:
 static System::Drawing::Bitmap ^ FromHicon(IntPtr hicon);
public static System.Drawing.Bitmap FromHicon(IntPtr hicon);
static member FromHicon : nativeint -> System.Drawing.Bitmap
Public Shared Function FromHicon (hicon As IntPtr) As Bitmap

Parametri

hicon
IntPtr

nativeint

Handle di un'icona.

Valori restituiti

Bitmap

Oggetto Bitmap creato da questo metodo.

Esempio

L'esempio di codice seguente è progettato per l'uso con Windows Forms e richiede PaintEventArgse, che è un parametro del gestore eventi Paint. Il codice esegue le azioni seguenti:

  • Ottiene l'handle di un'immagine icona esistente.

  • Crea un oggetto Bitmap dall'handle.

  • Disegna l'oggetto Bitmap sullo schermo.

private:
    [System::Runtime::InteropServices::DllImportAttribute("user32.dll", CharSet = CharSet::Unicode)]
   static IntPtr LoadImage( int Hinstance, String^ name, int type, int width, int height, int load );

private:
   void Hicon_Example( PaintEventArgs^ e )
   {
      
      // Get a handle to an icon.
      IntPtr Hicon = LoadImage( 0, "smile.ico", 1, 0, 0, 16 );
      
      // Create a Bitmap object from the icon handle.
      Bitmap^ iconBitmap = Bitmap::FromHicon( Hicon );
      
      // Draw the Bitmap object to the screen.
      e->Graphics->DrawImage( iconBitmap, 0, 0 );
   }

[System.Runtime.InteropServices.DllImportAttribute("user32.dll", CharSet = CharSet.Unicode)]
private static extern IntPtr LoadImage(int Hinstance,
    string name, int type, int width, int height, int load);

private void Hicon_Example(PaintEventArgs e)
{

    // Get a handle to an icon.
    IntPtr Hicon = LoadImage(0, "smile.ico", 1, 0, 0, 16);

    // Create a Bitmap object from the icon handle.
    Bitmap iconBitmap = Bitmap.FromHicon(Hicon);

    // Draw the Bitmap object to the screen.
    e.Graphics.DrawImage(iconBitmap, 0, 0);
}

<System.Runtime.InteropServices.DllImportAttribute("user32.dll", CharSet:=CharSet.Unicode)> _
Private Shared Function LoadImage(ByVal Hinstance As Integer, ByVal name As String, ByVal type As Integer, ByVal width As Integer, ByVal height As Integer, ByVal load As Integer) As IntPtr
End Function

Private Sub HICON_Example(ByVal e As PaintEventArgs)

    ' Get a handle to an icon.
    Dim Hicon As IntPtr = LoadImage(0, "smile.ico", 1, 0, 0, 16)

    ' Create a Bitmap object from the icon handle.
    Dim iconBitmap As Bitmap = Bitmap.FromHicon(Hicon)

    ' Draw the Bitmap object to the screen.
    e.Graphics.DrawImage(iconBitmap, 0, 0)
End Sub

Si applica a