如何在treeview中進行垂直和水平滾動？

Question

我有一個固定大小的 treeview。 我怎樣才能讓它滾動到水平和垂直？ 當我將 Scrollable 設置為 true 時，它只添加垂直滾動，當滾動到達表單底部並且剩余文本時，滾動沒有 go 向下。請幫幫我。

ps對不起英語不好

Answer 1

你可以試試這個方法

private const int WM_SCROLL = 276; // Horizontal scroll
private const int WM_VSCROLL = 277; // Vertical scroll
private const int SB_LINEUP = 0; // Scrolls one line up
private const int SB_LINELEFT = 0;// Scrolls one cell left
private const int SB_LINEDOWN = 1; // Scrolls one line down
private const int SB_LINERIGHT = 1;// Scrolls one cell right
private const int SB_PAGEUP = 2; // Scrolls one page up
private const int SB_PAGELEFT = 2;// Scrolls one page left
private const int SB_PAGEDOWN = 3; // Scrolls one page down
private const int SB_PAGERIGTH = 3; // Scrolls one page right
private const int SB_PAGETOP = 6; // Scrolls to the upper left
private const int SB_LEFT = 6; // Scrolls to the left
private const int SB_PAGEBOTTOM = 7; // Scrolls to the upper right
private const int SB_RIGHT = 7; // Scrolls to the right
private const int SB_ENDSCROLL = 8; // Ends scroll

[DllImport("user32.dll",CharSet=CharSet.Auto)]
private static extern int SendMessage(IntPtr hWnd, int wMsg,IntPtr wParam, IntPtr lParam);

SendMessage(treeView.Handle, WM Scroll Message, (IntPtr) Scroll Command ,IntPtr.Zero);

向上滾動頁面

SendMessage(treeView.Handle, WM_VSCROLL,(IntPtr)SB_PAGEUP,IntPtr.Zero);

向下滾動頁面

 SendMessage(treeView.Handle, WM_VSCROLL,(IntPtr)SB_PAGEDOWN,IntPtr.Zero);

Answer 2

最終為我工作的是修復 [keyboardP] 的代碼片段：

myTreeView.Nodes[myTreeView.Nodes.Count - 1].EnsureVisible();

突然。 單杠。