SLM SETTICKSIZE

This message sets the size of a tick mark for the primary scale. All tick marks are initially set to a size of 0 (invisible). Each tick mark along a scale can be set to the size desired.

Syntax

param1
USHORT usTickNum;   /* Tick mark location. */
USHORT usTickSize;  /* Tick mark length. */

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

Parameters

usTickNum (USHORT) - Input

Tick mark location whose size is to be changed. If the SMA_SETALLTICKS attribute is specified for this parameter, all tick marks on the primary scale are set to the size specified.

usTickSize (USHORT) - Input

Length of the tick mark, in pixels. If set to 0, the tick mark will not be drawn.

ulReserved (ULONG) - Input

Reserved value, should be 0.

Returns

rc (BOOL) - returns

Success indicator.

TRUE: Tick mark position was successfully set.

FALSE: An error occurred. The WinGetLastError function may return the following errors:

PMERR_HEAP_MAX_SIZE_REACHED

PMERR_PARAMETER_OUT_OF_RANGE.

Remarks

The application uses this message to draw a scale along the slider to indicate value positions in relation to the slider arm. The application can set varying lengths for different increments of the slider to help the user understand the magnitude of the value being set.

Default Processing

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