Bitmap.FromHicon Method (IntPtr)

 

Creates a Bitmap from a Windows handle to an icon.

Namespace:   System.Drawing
Assembly:  System.Drawing (in System.Drawing.dll)

public static Bitmap FromHicon(
	IntPtr hicon
)

Parameters

hicon
Type: System.IntPtr

A handle to an icon.

Return Value

Type: System.Drawing.Bitmap

The Bitmap that this method creates.

The following code example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. The code performs the following actions:

  • Gets the handle to an existing icon image.

  • Creates a Bitmap from the handle.

  • Draws the Bitmap to the screen.

[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);
}

SecurityPermission

for calling into unmanaged code. Related enumeration: UnmanagedCode

.NET Framework
Available since 1.1
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