Single/Multi Select TreeView In PowerBuilder
TreeView Object:
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forward global type u_tv from treeview end type type os_point from structure within u_tv end type type os_tvhittestinfo from structure within u_tv end type end forward type os_point from structure long l_x long l_y end type type os_tvhittestinfo from structure os_point str_pt long l_flags long l_hitem end type global type u_tv from treeview integer width = 503 integer height = 368 integer taborder = 10 integer textsize = -8 integer weight = 400 fontcharset fontcharset = ansi! fontpitch fontpitch = variable! fontfamily fontfamily = swiss! string facename = "Tahoma" long textcolor = 33554432 borderstyle borderstyle = stylelowered! string picturename[] = {"DatabaseProfile!"} integer picturewidth = 16 integer pictureheight = 16 long picturemaskcolor = 12632256 string statepicturename[] = {"state0.bmp","state1.bmp","radio0.bmp","radio1.bmp"} integer statepicturewidth = 16 integer statepictureheight = 16 long statepicturemaskcolor = 16777215 event mousemove pbm_mousemove end type global u_tv u_tv type prototypes Function Long HitMsg(Long hWindow, UInt Msg, Long wParam, Ref os_tvhittestinfo lParam) Library 'user32.dll' Alias for "SendMessageA;Ansi" end prototypes type variables Public: Constant UInt TVM_HITTEST = 4369 Constant UInt TVHT_ONITEMSTATEICON = 64 Protected: Boolean ib_stateclick Long il_handle end variables forward prototypes public function boolean of_isselected (long al_handle) public function integer of_deselectall () public function integer of_deselectall (long al_root) public function integer of_selectitem (long al_handle, boolean ab_switch) public function integer of_getselecteditems (long al_root, ref any aa_data[]) public function integer of_getselecteditems (ref any aa_data[]) public function integer of_selectall (long al_root) public function integer of_selectall () public function integer of_getselecteditems (long al_root, ref long al_handles[]) public function integer of_getselecteditems (ref long al_handles[]) public function integer of_getselecteditems (long al_root, ref string as_strings[]) public function integer of_getselecteditems (ref string as_strings[]) end prototypes event mousemove;os_tvhittestinfo lstr_tvhittest lstr_tvhittest.str_pt.l_x = UnitsToPixels(xpos, XUnitsToPixels!) lstr_tvhittest.str_pt.l_y = UnitsToPixels(ypos, YUnitsToPixels!) HitMsg(il_handle, TVM_HITTEST, 0, lstr_tvhittest) If lstr_tvhittest.l_hItem <> 0 Then ib_stateclick = (lstr_tvhittest.l_flags = TVHT_ONITEMSTATEICON) End If end event public function boolean of_isselected (long al_handle);TreeViewItem ltvi_node Long ll_rc ll_rc = This.GetItem(al_handle, ltvi_node) If ll_rc > 0 Then Return ltvi_node.StatePictureIndex = 2 Or ltvi_node.StatePictureIndex = 4 End If Return False end function public function integer of_deselectall ();Integer li_rc = 1 Long ll_root Long ll_count ll_root = FindItem(RootTreeItem!, 0) If ll_root > 0 Then This.Of_DeSelectAll(ll_root) ll_root = This.FindItem(NextTreeItem!, ll_root) Do While ll_root > 0 This.Of_DeSelectall(ll_root) ll_root = This.FindItem(NextTreeItem!, ll_root) Loop Else li_rc = 0 End If Return li_rc end function public function integer of_deselectall (long al_root);TreeViewItem ltvi_node Integer li_rc Long ll_root Long ll_count If al_root > 0 Then ll_root = al_root Do ll_root = FindItem(ChildTreeItem!, ll_root) Do This.GetItem(ll_root, ltvi_node) If ltvi_node.StatePictureIndex = 2 Then ltvi_node.StatePictureIndex = 1 This.SetItem(ll_root, ltvi_node) End If ll_root = This.FindItem(NextTreeItem!, ll_root) Loop While ll_root > 0 Loop While ll_root > 0 End If Return li_rc end function public function integer of_selectitem (long al_handle, boolean ab_switch);TreeViewItem ltvi_node Integer li_rc Long ll_handle If al_handle > 0 Then This.GetItem(al_handle, ltvi_node) If ab_switch Then Choose Case ltvi_node.StatePictureIndex Case 1 ltvi_node.StatePictureIndex = 2 // Check Box This.SetItem(al_handle, ltvi_node) li_rc = 1 Case 3 ltvi_node.StatePictureIndex = 4 // Check Radio This.SetItem(al_handle, ltvi_node) // Uncheck all sibling radio buttons. ll_handle = al_handle Do While ll_handle <> -1 ll_handle = This.FindItem(PreviousTreeItem!, ll_handle) If ll_handle > 0 Then This.GetItem(ll_handle, ltvi_node) If ltvi_node.StatePictureIndex = 4 Then ltvi_node.StatePictureIndex = 3 This.SetItem(ll_handle, ltvi_node) End If End If Loop ll_handle = al_handle Do While ll_handle <> -1 ll_handle = This.FindItem(NextTreeItem!, ll_handle) If ll_handle > 0 Then This.GetItem(ll_handle, ltvi_node) If ltvi_node.StatePictureIndex = 4 Then ltvi_node.StatePictureIndex = 3 This.SetItem(ll_handle, ltvi_node) End If End If Loop li_rc = 1 End Choose Else Choose Case ltvi_node.StatePictureIndex Case 2 ltvi_node.StatePictureIndex = 1 // Uncheck Box This.SetItem(al_handle, ltvi_node) li_rc = 1 Case 4 // Cannot uncheck radio -- Only through checking another item. li_rc = 0 End Choose End If End If Return li_rc end function public function integer of_getselecteditems (long al_root, ref any aa_data[]);TreeViewItem ltvi_node Integer li_rc Long ll_root Long ll_count If al_root > 0 Then ll_root = al_root Do ll_root = This.FindItem(ChildTreeItem!, ll_root) Do This.GetItem(ll_root, ltvi_node) If ltvi_node.StatePictureIndex = 2 Or ltvi_node.StatePictureIndex = 4 Then ll_count = UpperBound( aa_data[] ) + 1 aa_data[ll_count] = ltvi_node.Data End If ll_root = This.FindItem(NextTreeItem!, ll_root) Loop While ll_root > 0 Loop While ll_root > 0 End If Return li_rc end function public function integer of_getselecteditems (ref any aa_data[]);TreeViewItem ltvi_node Integer li_rc = 1 Long ll_root Long ll_count ll_root = This.FindItem(RootTreeItem!, 0) If ll_root > 0 Then This.of_GetSelectedItems(ll_root, aa_data) ll_root = This.FindItem(NextTreeItem!, ll_root) Do While ll_root > 0 This.Of_GetSelectedItems(ll_root, aa_data) ll_root = This.FindItem(NextTreeItem!, ll_root) Loop Else li_rc = 0 End If Return li_rc end function public function integer of_selectall (long al_root);TreeViewItem ltvi_node Integer li_rc Long ll_root Long ll_count If al_root > 0 Then ll_root = al_root Do ll_root = This.FindItem(ChildTreeItem!, ll_root) Do This.Of_SelectItem(ll_root, True) ll_root = This.FindItem(NextTreeItem!, ll_root) Loop While ll_root > 0 Loop While ll_root > 0 End If Return li_rc end function public function integer of_selectall ();TreeViewItem ltvi_node Integer li_rc = 1 Long ll_root Long ll_count ll_root = This.FindItem(RootTreeItem!, 0) If ll_root > 0 Then This.Of_SelectAll(ll_root) ll_root = This.FindItem(NextTreeItem!, ll_root) Do While ll_root > 0 This.Of_SelectAll(ll_root) ll_root = This.FindItem(NextTreeItem!, ll_root) Loop Else li_rc = 0 End If Return li_rc end function public function integer of_getselecteditems (long al_root, ref long al_handles[]);TreeViewItem ltvi_node Integer li_rc Long ll_root Long ll_count If al_root > 0 Then ll_root = al_root Do ll_root = This.FindItem(ChildTreeItem!, ll_root) Do This.GetItem(ll_root, ltvi_node) If ltvi_node.StatePictureIndex = 2 Or ltvi_node.StatePictureIndex = 4 Then ll_count = UpperBound(al_handles[]) + 1 al_handles[ll_count] = ll_root End If ll_root = This.FindItem(NextTreeItem!, ll_root) Loop While ll_root > 0 Loop While ll_root > 0 End If Return li_rc end function public function integer of_getselecteditems (ref long al_handles[]);TreeViewItem ltvi_node Integer li_rc = 1 Long ll_root Long ll_count ll_root = This.FindItem(RootTreeItem!, 0) If ll_root > 0 Then This.Of_GetSelectedItems(ll_root, al_handles) ll_root = This.FindItem(NextTreeItem!, ll_root) Do While ll_root > 0 This.Of_GetSelectedItems(ll_root, al_handles) ll_root = This.FindItem(NextTreeItem!, ll_root) Loop Else li_rc = 0 End If Return li_rc end function public function integer of_getselecteditems (long al_root, ref string as_strings[]);TreeViewItem ltvi_node Integer li_rc Long ll_root Long ll_count If al_root > 0 Then ll_root = al_root Do ll_root = This.FindItem(ChildTreeItem!, ll_root) Do This.GetItem(ll_root, ltvi_node) If ltvi_node.StatePictureIndex = 2 Or ltvi_node.StatePictureIndex = 4 Then ll_count = UpperBound(as_strings[]) + 1 as_strings[ll_count] = ltvi_node.Label End If ll_root = This.FindItem(NextTreeItem!, ll_root) Loop While ll_root > 0 Loop While ll_root > 0 End If Return li_rc end function public function integer of_getselecteditems (ref string as_strings[]);TreeViewItem ltvi_node Integer li_rc = 1 Long ll_root Long ll_count ll_root = This.FindItem(RootTreeItem!, 0) If ll_root > 0 Then This.Of_GetSelectedItems(ll_root, as_strings) ll_root = This.FindItem(NextTreeItem!, ll_root) Do While ll_root > 0 This.Of_GetSelectedItems(ll_root, as_strings) ll_root = This.FindItem(NextTreeItem!, ll_root) Loop Else li_rc = 0 End If Return li_rc end function event clicked;Long ll_rc If ib_stateclick Then ll_rc = This.Of_SelectItem(Handle, Not This.Of_IsSelected(Handle)) End If Return ll_rc end event event constructor;il_handle = Handle(This) end event event selectionchanging;If newhandle > 0 Then If ib_stateclick Then Return 1 End If end event on u_tv.create end on on u_tv.destroy end on |
Example Window
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forward global type w_main from window end type type tv_multi from u_tv within w_main end type end forward global type w_main from window integer width = 1349 integer height = 1596 boolean titlebar = true string title = "Multi Select TreeView" boolean controlmenu = true boolean minbox = true boolean maxbox = true boolean resizable = true long backcolor = 67108864 string icon = "AppIcon!" boolean center = true tv_multi tv_multi end type global w_main w_main on w_main.create this.tv_multi=create tv_multi this.Control[]={this.tv_multi} end on on w_main.destroy destroy(this.tv_multi) end on event open;TreeViewItem ltvi_root TreeViewItem ltvi_node Integer li_index Integer li_items = 5 Long ll_lev0 Long ll_lev1 Long ll_lev2 String ls_list String ls_root = 'Non-mutually exclusive items' ltvi_root.PictureIndex = 1 ltvi_root.SelectedPictureIndex = 1 ltvi_node.PictureIndex = 2 ltvi_node.SelectedPictureIndex = 2 ltvi_node.StatePictureIndex = 1 // Root ltvi_root.Label = ls_root ll_lev1 = tv_multi.InsertItemLast(0, ltvi_root) // Nodes For li_index = 1 To li_items ltvi_node.Label = "Item " + String(li_index) ll_lev2 = tv_multi.InsertItemLast(ll_lev1, ltvi_node) Next ll_lev0 = tv_multi.FindItem(RootTreeItem!, 0) tv_multi.ExpandAll(ll_lev0) // Radio buttons. String ls_items[3] String ls_blank[3] // root ltvi_root.PictureIndex = 4 ltvi_root.SelectedPictureIndex = 4 ltvi_root.Label = 'Mutually exclusive items' ll_lev1 = tv_multi.InsertItemLast(0, ltvi_root) // nodes ls_items = ls_blank ls_items[1] = 'Item 1' ls_items[2] = 'Item 2' ls_items[3] = 'Item 3' li_items = UpperBound(ls_items) For li_index = 1 To li_items - 1 ltvi_node.Label = ls_items[li_index] ltvi_node.PictureIndex = 5 ltvi_node.SelectedPictureIndex = 5 ltvi_node.StatePictureIndex = 3 ll_lev2 = tv_multi.InsertItemSort(ll_lev1, ltvi_node) Next ltvi_node.Label = ls_items[3] ltvi_node.PictureIndex = 6 ltvi_node.SelectedPictureIndex = 6 ll_lev2 = tv_multi.InsertItemSort(ll_lev1, ltvi_node) tv_multi.Of_SelectItem(ll_lev2 - 2, True) ll_lev0 = tv_multi.FindItem(RootTreeItem!, 0) tv_multi.ExpandAll(ll_lev0) ll_lev0 = tv_multi.FindItem(NextTreeItem!, ll_lev0) tv_multi.ExpandAll(ll_lev0) end event type tv_multi from u_tv within w_main integer x = 37 integer y = 32 integer width = 1207 integer height = 1312 string picturename[] = {"Library!","Window!","RunWindow!","Library!","ViewPainter!","WebPBWizard!"} end type |
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