Question

如何用程序控制RichEdit控件的ScrollBar滚动到最底部

Answer 1

使用参数SB_BOTTOM就可以满足你的要求，在插入字符串后向你的RichEdit发送这个消息就可以了

WM_VSCROLL
nScrollCode = (int) LOWORD(wParam); // scroll bar value
nPos = (short int) HIWORD(wParam); // scroll box position
hwndScrollBar = (HWND) lParam; // handle to scroll bar

Parameters
nScrollCode
Value of the low-order word of wParam. Specifies a scroll bar value that indicates the user's scrolling request. This parameter can be one of the following values: Value Meaning
SB_BOTTOM Scrolls to the lower right.
SB_ENDSCROLL Ends scroll.
SB_LINEDOWN Scrolls one line down.
SB_LINEUP Scrolls one line up.
SB_PAGEDOWN Scrolls one page down.
SB_PAGEUP Scrolls one page up.
SB_THUMBPOSITION The user has dragged the scroll box (thumb) and released the mouse button. The nPos parameter 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 nPos parameter indicates the position that the scroll box has been dragged to.
SB_TOP Scrolls to the upper left.