This message is sent to the tab control parent.
- Parameters
-
| wParam | see remarks |
| lParam | this parameter is not used. |
- Returns
- should return nonzero.
Process this message to receive notifications from CBCGPTabWnd objects when a scroll event occurs in the tabbed widget horizontal scroll bar.
wParam
The low-order word specifies a scroll bar value that indicates the user's scrolling request. This word can be one of the following values.
- SB_ENDSCROLL: ends scroll.
- SB_LEFT: scrolls to the upper left.
- SB_RIGHT: scrolls to the lower right.
- SB_LINELEFT: scrolls left by one unit.
- SB_LINERIGHT: scrolls right by one unit.
- SB_PAGELEFT: scrolls left by the width of the window.
- SB_PAGERIGHT: scrolls right by the width of the window.
- SB_THUMBPOSITION: the user has dragged the scroll box (thumb) and released the mouse button. The high-order word indicates the position of the scroll box at the end of the drag operation.
- SB_THUMBTRACK: the user is dragging the scroll box. This message is sent repeatedly until the user releases the mouse button. The high-order word indicates the position that the scroll box has been dragged to. The high-order word specifies the current position of the scroll box if the low-order word is SB_THUMBPOSITION or SB_THUMBTRACK; otherwise, this word is not used.
