void CreateTreeViewControl(HWND hMainWnd){g_hTreeView = CreateWindow(WC_TREEVIEW, _T("Tree View"), WS_VISIBLE | WS_CHILD | WS_BORDER | TVS_HASLINES | TVS_LINESATROOT, 5, 5, 320, 480, hMainWnd, NULL, hInst, NULL);TVINSERTSTRUCT tvInsertStruct = {0};tvInsertStruct.hParent= NULL;tvInsertStruct.hInsertAfter = TVI_ROOT;tvInsertStruct.itemex.mask = TVIF_TEXT/* | TVIF_STATE */;tvInsertStruct.itemex.pszText = _T("根节点");tvInsertStruct.itemex.state = TVIS_EXPANDED;//插入根节点HTREEITEM hRoot = (HTREEITEM)SendMessage(g_hTreeView, TVM_INSERTITEM, 0, (LPARAM)(&tvInsertStruct));DWORD dwErrorID = 0;if(hRoot == NULL)dwErrorID = GetLastError();//不能在这里展开根节点,因为此时根节点还没有任何子项,这样SendMessage函数会调用失败,返回0!//msdn says: Attempting to expand or collapse a node that has no children is considered a failure and SendMessage returns zero.DWORD dwRet = SendMessage(g_hTreeView, TVM_EXPAND, TVE_EXPAND, (LPARAM)(hRoot));//插入子节点tvInsertStruct.hParent= hRoot;tvInsertStruct.hInsertAfter = TVI_LAST;tvInsertStruct.itemex.mask = TVIF_TEXT;tvInsertStruct.itemex.pszText = _T("子节点1");HTREEITEM hSubitem1 = (HTREEITEM)SendMessage(g_hTreeView, TVM_INSERTITEM, 0, (LPARAM)(&tvInsertStruct));tvInsertStruct.itemex.pszText = _T("子节点2");HTREEITEM hSubitem2 = (HTREEITEM)SendMessage(g_hTreeView, TVM_INSERTITEM, 0, (LPARAM)(&tvInsertStruct));tvInsertStruct.itemex.pszText = _T("子节点3");HTREEITEM hSubitem3 = (HTREEITEM)SendMessage(g_hTreeView, TVM_INSERTITEM, 0, (LPARAM)(&tvInsertStruct));tvInsertStruct.itemex.pszText = _T("子节点4");HTREEITEM hSubitem4 = (HTREEITEM)SendMessage(g_hTreeView, TVM_INSERTITEM, 0, (LPARAM)(&tvInsertStruct));tvInsertStruct.itemex.pszText = _T("子节点5");HTREEITEM hSubitem5 = (HTREEITEM)SendMessage(g_hTreeView, TVM_INSERTITEM, 0, (LPARAM)(&tvInsertStruct));tvInsertStruct.itemex.pszText = _T("子节点6");HTREEITEM hSubitem6 = (HTREEITEM)SendMessage(g_hTreeView, TVM_INSERTITEM, 0, (LPARAM)(&tvInsertStruct));//展开根节点dwRet = SendMessage(g_hTreeView, TVM_EXPAND, TVE_EXPAND, (LPARAM)(hRoot));//SetFocus(g_hTreeView);//选中某个节点TVITEM tvItem = {0};tvItem.mask= TVIF_STATE | TVIF_HANDLE;tvItem.hItem= hSubitem1;tvItem.stateMask |= TVIS_SELECTED;tvItem.state= TVIS_SELECTED;BOOL bRet = FALSE;//TODO: 这里为什么不成功?//bRet = SendMessage(g_hTreeView, TVM_SETITEM, 0, (LPARAM)(&tvItem));//bRet = 0;//bRet = SendMessage(g_hTreeView, TVM_SELECTITEM, TVGN_CARET, (LPARAM)(hSubitem4));<span style="color:#ff0000;">bRet = SendMessage(g_hTreeView, TVM_SELECTITEM, TVGN_CARET, (LPARAM)(hSubitem4));</span>//HTREEITEM hSelItem = NULL;//hSelItem = (HTREEITEM)SendMessage(g_hTreeView, TVM_GETNEXTITEM, TVGN_CARET, 0);//模拟鼠标点击<span style="color:#3366ff;">RECT rc = {0};*(HTREEITEM*)&rc = hSubitem6;SendMessage(g_hTreeView, TVM_GETITEMRECT, FALSE, (LPARAM)&rc);POINT pt = {(rc.right-rc.left)/2+rc.left, (rc.bottom-rc.top)/2+rc.top};//ClientToScreen(g_hTreeView, &pt);//SetCursorPos(pt.x, pt.y);SendMessage(g_hTreeView, WM_LBUTTONDOWN, 0, MAKELONG(pt.x, pt.y));</span>g_OldTreeViewWndProc = (WNDPROC)GetWindowLong(g_hTreeView, GWL_WNDPROC);//if(SetWindowLong(g_hTreeView, GWL_WNDPROC, (long)newTreeViewWndProc) == 0)//MessageBox(hMainWnd, _T("子类化TreeView窗口失败!"), _T(""), MB_OK | MB_ICONERROR); }LRESULT CALLBACK newTreeViewWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){if(message == WM_LBUTTONDOWN){//MessageBox(NULL, _T("鼠标按下消息!"), _T(""), MB_OK);return TRUE;}elsereturn CallWindowProc(g_OldTreeViewWndProc, hWnd, message, wParam, lParam);}
我的意图是想【实现TreeView某个节点被点击选中的效果】，使用了两种方法来实现,都未成功：
方法一：给TreeView控件发送TVM_SELECTITEM，虽然能选中指定节点,但是该节点不会高亮显示。
方法二：给指定节点发送鼠标单击事件,但是显示效果位置总是不对，，如上面代码中所示，我打算选中节点6,为何程序运行出来的效果是选中了节点4？（我也考虑了窗口坐标和全局桌面坐标的关系）如下图：
希望哪位大神路过看到此文，不吝赐教。特此感谢！！
空虚无聊的时候就读书，但一定得有自己的生活目标和计划。
