WM_DRAWITEM (in Slider Controls) - Parameters

id (USHORT)

Window identifier.

The window identifier of the slider control sending this notification message.

powneritem (POWNERITEM)

Pointer to an OWNERITEM data structure.

The following list defines the OWNERITEM data structure fields that apply to the slider control. See OWNERITEM for the default field values.

hwnd (HWND)

Slider window handle.
hps (HPS)
Presentation-space handle.
fsState (ULONG)
Slider window style flags. See Slider Control Styles for descriptions of these style flags.
fsAttribute (ULONG)
Reserved.
fsStateOld (ULONG)
Reserved.
fsAttributeOld (ULONG)
Reserved.
rclItem (RECTL)
Item rectangle to be drawn in window coordinates.
idItem (LONG)
Identity of item to be drawn:

SDA_SLIDERSHAFT

Specifies that the slider shaft is to be drawn.
SDA_RIBBONSTRIP
Specifies that the slider shaft area that contains a ribbon strip is to be drawn.
SDA_SLIDERARM
Specifies that the slider arm is to be drawn.
SDA_BACKGROUND
Specifies that the slider background is to be drawn.
hItem (ULONG)
Reserved.

rc (BOOL)

Item-drawn indicator.

TRUE

The owner draws the item.
FALSE
If the owner does not draw the item, the owner returns this value and the slider control draws the item.

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