afx_msg void OnHScroll( UINT nSBCode, UINT nPos, CWnd* pScrollBar );
nSBCode
Specifies a scroll-bar code that indicates the user's scrolling request. This parameter can be one of the following values:
| Value | Description |
| SB_BOTTOM | Scroll to lower right. |
| SB_ENDSCROLL | End scroll. |
| SB_LINEDOWN | Scroll one line down. |
| SB_LINEUP | Scroll one line up. |
| SB_PAGEDOWN | Scroll one page down. |
| SB_PAGEUP | Scroll one page up. |
| SB_THUMBPOSITION | Scroll to the absolute position. The current position is provided in nPos. |
| SB_TOP | Scroll to upper left. |
nPos
Specifies the scroll box position if the scroll-bar code is SB_THUMBPOSITION; otherwise, not used.
pScrollBar
If the control is a scroll bar, contains a pointer to the control. If the user clicked a pop-up window's scroll bar, this parameter is not used.
Called when the user clicks a window's horizontal scroll bar.
The SB_THUMBTRACK notification code typically is used by applications that give some feedback while the scroll box is being dragged.
If an application scrolls the contents controlled by the scroll bar, it must also reset the position of the scroll box by using the SetScrollPos member function.
This message-handler member function calls the Default member function. Override this member function in your derived class to handle the WM_HSCROLL message.
CWnd::SetScrollPos, WM_VSCROLL, WM_HSCROLL, CWnd::Default