TBM_GETPAGESIZE message

Retrieves the number of logical positions the trackbar's slider moves in response to keyboard input, such as the or keys, or mouse input, such as clicks in the trackbar's channel. The logical positions are the integer increments in the trackbar's range of minimum to maximum slider positions.

Parameters

wParam

Must be zero.

lParam

Must be zero.

Return value

Returns a 32-bit value that specifies the page size for the trackbar.

Remarks

The trackbar also sends a WM_HSCROLL or WM_VSCROLL message with the TB_PAGEUP and TB_PAGEDOWN notification codes to its parent window when it receives keyboard or mouse input that scrolls the page.

Requirements

See also

TBM_SETPAGESIZE