property Button.Enabled as Boolean
Enables or disables the control.

TypeDescription
Boolean A boolean expression that indicates whether the control is enabled or disabled. 
By default, the button is enabled. Use the Enabled property to disable the control. When control is disabled, the control displays the exDisabled skin. Use the ForeColorState property to assign a different foreground color when the control is disabled. By default, the ForeColorState( exDisabled ) is COLOR_GRAYTEXT system color.