First school MFC (3) - one of tree controls
When studying a tree control, first I have to build it. To this end, I use the following steps:
1: I have established a based dialog application. On the dialog box, place a tree.
2: Add a ctreectrl object M-WNDTREE in the dialog class
3: Add the following code in the OnInitDialog function of the dialog:
HtreeItem Hitem1a = m_wndtree.insertitem (_T ("layer1_a"), 0, 1);
M_Wndtree.InsertItem (_T ("Layer2_1a"), 0, 1, Hitem1a, TVi_Last);
HtreeItem Hitem2_1b = m_wndtree.insertitem (_t ("layer2_1b"), 0, 1, hitem1a, TVi_last);
M_Wndtree.InsertItem (_t ("Layer3_1a"), 0, 1, HITEM2_1B);
M_Wndtree.InsertItem (_t ("layer3_1b"), 0, 1, hitem2_1b);
M_Wndtree.InsertItem (_t ("layer3_1c"), 0, 1, hitem2_1b;
M_Wndtree.Insertitem (_t ("layer2_1c"), 0, 1, hitem1a, TVi_last);
HTREEITEM HITEM1B = m_wndtree.insertitem (_t ("layer1_b"), 0, 1);
m_wndtree.insertitem (_T ("Layer2_2a"), 0, 1, Hitem1b, TVi_Last);
M_Wndtree.Insertitem (_t ("Layer2_2B"), 0, 1, Hitem1b, TVi_Last);
M_Wndtree.Insertitem (_T ("Layer2_2C"), 0, 1, Hitem1b, TVi_Last);
(Note: The above code is my Copy, I want to thank this friend)
4: Compile operation, a tree is displayed on the dialog.
5: After the tree comes out, I also want to add an icon in front:
First, define a cimagelist object M-IMGLST in the dialog class
Second, in front of the above code, add the following code:
m_imglst.create (idb_tree, 16, 1, rgb (0,255,255));
M_Wndtree.setimageList (& m_imglst, tvsil_normal);
The icon is displayed; the creation of the tree is completed.
