Win32 API Tree control and comboBox

[wlwshang]

各位，

我想用纯Win32 API实现在Tree control 中显示comboBox.就是tree control 正常显示text. 但是当我双击具体的某个节点时，一个comboBox显示出来，用户可以从中选出自己的选项。看看大家有什么好主意。谢谢

[Eleven]

响应NM_DBCLICK通知，然后ShowWindow一个ComboBox出来在对应的树节点的位置上TreeView_GetItemRect

[xiaohuh421]

参考WTL中的源码. 实际已经封装好基本控件的一些消息,变成方法. 创建窗口的时候传入对应控件的类名, 可可创建出控件, 然后通过这些通用控件的消息来操作这些控件.

[wlwshang]

if(((LPNMHDR)lParam)->code == NM_DBLCLK) //user has Double clicked the left mouse button within the control
                    {
                        __wchar_t Text[255]= L"";
                        memset(&tvi,0,sizeof(tvi));

                        Selected=(HTREEITEM)SendDlgItemMessage(hWnd,IDC_TREE1,TVM_GETNEXTITEM,TVGN_CARET,(LPARAM)Selected);

                        if(Selected==NULL)
                        {
                            MessageBox(hWnd,L"No Items in TreeView",L"Error",MB_OK|MB_ICONINFORMATION);
                            break;
                        }
                        TreeView_EnsureVisible(hWnd,Selected);
                        SendDlgItemMessage(hWnd,IDC_TREE1,TVM_SELECTITEM,TVGN_CARET,(LPARAM)Selected);
                        flagSelected = true;
                        tvi.mask=TVIF_TEXT;
                        tvi.pszText = Text;
                        tvi.cchTextMax = 256;
                        tvi.hItem = Selected;

                        if(SendDlgItemMessage(hWnd,IDC_TREE1,TVM_GETITEM,TVGN_CARET,(LPARAM)&tvi))
                        {
                            // convert LPWSTR to char
                            char temp[550];
                            wcstombs(temp, tvi.pszText, 550);
                            if(tvi.cChildren==0 && strcmp(temp,"Double Click Me!")==0)
                            {
                                //MessageBox(hWnd,L"Press OK to delete me!",L"Example",MB_OK|MB_ICONINFORMATION);
                                //SendDlgItemMessage(hWnd,IDC_TREE1,TVM_DELETEITEM,TVGN_CARET,(LPARAM)tvi.hItem);
                                //flagSelected=false;
                                //break;
                               /* hWndComboBox = */
                               //point.x = LOWORD(lParam);
                               //point.y = HIWORD(lParam);
                               //GetCursorPos(&point);
                               /*CreateWindow(L"COMBOBOX",
                                        NULL,
                                        WS_CHILD | WS_VISIBLE,
                                        point.x - 30 , point.y - 25, 100, 60,
                                        hWnd,
                                        NULL,
                                        hInst,
                                        NULL);*/
                               RECT point1;
                               TreeView_GetItemRect(hWnd,Selected,&point1,true);
                               CreateWindow(L"COMBOBOX",
                                        NULL,
                                        WS_CHILD | WS_VISIBLE,
                                        point1.left , point1.top, point1.right - point1.left, point1.bottom - point1.top,
                                        hWnd,
                                        NULL,
                                        hInst,
                                        NULL);
                                break;
                            }
                        }
                    }

point1(3114712,-858993460,-858993460,-858993460)

似乎用这种方法得到的point只有left的值更新了，而且也不对。不知何故。