TTMSFNCCustomTrackBarBaseBeforeDrawButtonEvent Event Type
Event type fired before an increment or decrement button is drawn.
API unit family: TMSFNCTrackBar
Parameters
| Name | Description |
|---|---|
Sender |
Control that is drawing the button. |
AGraphics |
Graphics context used for custom drawing. |
ARect |
Button bounds in control coordinates. |
APlus |
True when the increment button is being drawn; False for the decrement button. |
AAllow |
Set to False to skip drawing the button. |
ADefaultDraw |
Set to False after custom drawing to prevent the default button rendering. |