/// <summary> Draw the background. </summary>
/// <param name="display"> The display pointer, that specifies the connection to the X server. <see cref="IntPtr"/> </param>
/// <param name="window"> The window to draw on. <see cref="IntPtr"/> </param>
/// <param name="gc"> The graphics context to use for drawing. <see cref="IntPtr"/> </param>
/// <param name="backgroundArea"> The area to draw the background on. <see cref="TRectangle"/> </param>
public virtual void DrawBackground(IntPtr display, IntPtr window, IntPtr gc, TRectangle backgroundArea)
{
if (display == IntPtr.Zero)
{
Console.WriteLine(CLASS_NAME + "::DrawBackground () ERROR: Argument null: display");
return;
}
if (window == IntPtr.Zero)
{
Console.WriteLine(CLASS_NAME + "::DrawBackground () ERROR: Argument null: window");
return;
}
if (gc == IntPtr.Zero)
{
Console.WriteLine(CLASS_NAME + "::DrawBackground () ERROR: Argument null: gc");
return;
}
X11lib.XFillRectangle(display, window, gc, (TInt)backgroundArea.X, (TInt)backgroundArea.Y,
(TUint)backgroundArea.Width, (TUint)backgroundArea.Height);
}