View source for VM QUERYITEMATTR

This message queries the attribute or attributes of the item indicated by the values of the ''usRow'' and ''usColumn'' fields.

==Syntax==
<pre>
param1
    USHORT usRow;    /* Row index. */
    USHORT usColumn; /* Column index. */

param2
    ULONG  ulReserved; /* Reserved value, should be 0. */
</pre>

==Parameters==
;''usRow'' (USHORT) - input: Row index of the item for which the attribute or attributes are queried. Rows have a value from 1 to the value of the ''usRowCount'' field. This value, which is the total number of rows in the value set, is specified in the [[VSCDATA]] data structure when the value set control is created.
;''usColumn'' (USHORT) - input: Column index of the item for which the attribute or attributes are queried. Columns have a value from 1 to the value of the ''usColumnCount'' field. This value, which is the total number of columns in the value set, is specified in the [[VSCDATA]] data structure when the value set control is created.
;''ulReserved'' (ULONG) - input: Reserved value, should be 0.

==Returns==
;''usItemAttr'' (USHORT) - returns: Item information. This value depends on the VIA_* attribute or attributes specified for the value set item.
:One of the following attributes can be set:
::VIA_BITMAP: If this attribute is set, the item is a bit map. This is the default.
::VIA_COLORINDEX: If this attribute is set, the item is an index into the logical color table.
::VIA_ICON: If this attribute is set, the item is an icon.
::VIA_RGB: If this attribute is set, the item is a color entry.
::VIA_TEXT: If this attribute is set, the item is a text string.
:In addition, one or more of the following attributes can be set:
::VIA_DISABLED: If this attribute is set, the item cannot be selected and is displayed with unavailable-state emphasis, if possible. Unavailable text items are always displayed with unavailable-state emphasis, according to CUA guidelines; for items displayed as color, bit maps, and icons, it is the application's responsibility to determine the best way to show that these items are unavailable, if possible.
::VIA_DRAGGABLE: If this attribute is set, the item can be the source of a direct manipulation action.
::VIA_DROPONABLE: If this attribute is set, the item can be the target of a direct manipulation action.
::VIA_OWNERDRAW: If this attribute is set, a paint notification message is sent whenever this item needs painting.
:The following is returned if an error occurs:
::VMERR_INVALID_PARAMETERS: The [[WinGetLastError]] function may return the following errors:
:::PMERR_INVALID_PARAMETERS
:::PMERR_PARAMETER_OUT_OF_RANGE

==Remarks==
The application uses this message to query the specific attribute or attributes of a value set item.

==Default Processing==
The default window procedure does not expect to receive this message and therefore takes no action on it other than to return 0.

[[Category:Messages]]