/// <summary>
/// Get total computed width of control box area (minimize, maximize and close buttons).
/// </summary>
/// <returns>Total width in pixels.</returns>
public int GetControlBoxWidth()
{
int controlBoxWidth = ApiSystemMetrics.GetControlBoxWidth(this.Handle);
if (controlBoxWidth > 0)
{
return(controlBoxWidth);
}
// legacy OS
int buttonCount = this.MaximizeBox || this.MinimizeBox ? 3 : 1;
int controlButtonAverageWidth = ApiSystemMetrics.GetControlButtonWidth();
return(controlButtonAverageWidth * buttonCount);
}
