DRAWITEMSTRUCT

This structure provides information the owner window must have to determine how to paint an owner-drawn control or menu item. The owner window of the owner-drawn control or menu item receives a pointer to this structure as the lParam parameter of the WM_DRAWITEM message.

At a Glance

Header file: Winuser.h
Windows CE versions: 1.0 and later

Syntax

typedef struct tagDRAWITEMSTRUCT {
UINT
CtlType;
UINT
CtlID;
UINT
itemID;
UINT
itemAction;
UINT
itemState;
HWND
hwndItem;
HDC
hDC;
RECT
rcItem;
DWORD
itemData;
} DRAWITEMSTRUCT;

Members

CtlType

Specifies the control type. It is one of the following values:

Value Description
ODT_BUTTON Owner-drawn button
ODT_LISTVIEW List view control
ODT_MENU Owner-drawn menu item
ODT_TAB Tab control

CtlID

Specifies the identifier of the combo box, list box, button, or static control. This member is not used for a menu item.

itemID

Specifies the menu item identifier for a menu item or the index of the item in a list box or combo box. For an empty list box or combo box, this member can be –1. This allows the application to draw only the focus rectangle at the coordinates specified by the rcItem member even though there are no items in the control. This indicates to the user whether the list box or combo box has the focus. How the bits are set in the itemAction member determines whether the rectangle is to be drawn as though the list box or combo box has the focus.

itemAction

Specifies the drawing action required. It can be one or more of the following values:

Value Description
ODA_DRAWENTIRE The entire control needs to be drawn.
ODA_FOCUS The control has lost or gained the keyboard focus. The itemState member should be checked to determine whether the control has the focus.
ODA_SELECT The selection status has changed. The itemState member should be checked to determine the new selection state.

itemState

Specifies the visual state of the item after the current drawing action takes place. It can be a combination of the following values:

Value Description
ODS_CHECKED The menu item is to be checked. This bit is used only in a menu.
ODS_DEFAULT The item is the default item.
ODS_DISABLED The item is to be drawn as disabled.
ODS_FOCUS The item has the keyboard focus.
ODS_GRAYED The item is to be grayed. This bit is used only in a menu.
ODS_SELECTED The menu item’s status is selected.

hwndItem

Handle to the control for combo boxes, list boxes, buttons, and static controls. For menus, this member identifies the menu containing the item.

hDC

Handle to a device context; this device context must be used when performing drawing operations on the control.

rcItem

Specifies a rectangle that defines the boundaries of the control to be drawn. This rectangle is in the device context specified by the hDC member. The system automatically clips anything the owner window draws in the device context for combo boxes, list boxes, and buttons, but does not clip menu items. When drawing menu items, the owner window must not draw outside the boundaries of the rectangle defined by the rcItem member.

itemData

Specifies the application-defined 32-bit value associated with the menu item. For a control, this member specifies the value last assigned to the list box or combo box by the LB_SETITEMDATA or CB_SETITEMDATA message. If the list box or combo box has the LBS_HASSTRINGS or CBS_HASSTRINGS style, this value is initially zero. Otherwise, this value is initially the value that was passed to the list box or combo box in the lParam parameter of one of the following messages:

Remarks

Windows CE does not support owner–drawn combo boxes and list boxes.

See Also

CB_ADDSTRING, CB_INSERTSTRING, CB_SETITEMDATA, LB_ADDSTRING, LB_INSERTSTRING, WM_DRAWITEM