SystemColors Class (System.Drawing)

Better performance is achieved by using the properties of the SystemPens or SystemBrushes classes rather than creating a new pen or brush based on a value from SystemColors. For example, if you wanted to get a brush for the face color of a 3-D element, use the SystemBrushes.Control property because it gets a brush that already exists, whereas calling the SolidBrush constructor with a parameter value of SystemColors.Control will create a new brush.

The following code example demonstrates the Equality operator and the SystemColors class. This example is designed to be used with a Windows Form that contains a button named Button1. Paste the following code into your form and associate the Button1_Click method with the button's Click event.

Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click

    If (Color.op_Equality(Me.BackColor, SystemColors.ControlDark)) Then
        Me.BackColor = SystemColors.Control
    End If
End Sub

private void Button1_Click(System.Object sender, System.EventArgs e)
{

    if (this.BackColor == SystemColors.ControlDark)
    {
        this.BackColor = SystemColors.Control;
    }
}

void Button1_Click( System::Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   if ( this->BackColor == SystemColors::ControlDark )
   {
      this->BackColor = SystemColors::Control;
   }
}

.NET Framework

.NET Framework Client Profile

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference