You've already forked lazarus-ccr
* add demo to test drag and drop
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@2191 8e941d3f-bd1b-0410-a28a-d453659cc2b4
This commit is contained in:
blikblum
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object MainForm: TMainForm
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Left = 569
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Height = 362
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Top = 219
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Width = 461
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Caption = 'VTV Drag and Drop'
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ClientHeight = 362
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ClientWidth = 461
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Position = poDesktopCenter
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LCLVersion = '0.9.31'
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object VirtualStringTree1: TVirtualStringTree
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Left = 8
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Height = 315
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Top = 24
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Width = 200
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DefaultText = 'Node'
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DragMode = dmAutomatic
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DragType = dtVCL
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Header.AutoSizeIndex = 0
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Header.Columns = <>
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Header.DefaultHeight = 17
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Header.MainColumn = -1
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RootNodeCount = 30
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TabOrder = 0
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TreeOptions.AutoOptions = [toAutoDropExpand, toAutoScroll, toAutoScrollOnExpand, toAutoTristateTracking, toAutoDeleteMovedNodes]
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OnDragOver = VirtualStringTree1DragOver
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OnDragDrop = VirtualStringTree1DragDrop
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OnGetText = VirtualStringTree1GetText
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OnGetNodeDataSize = VirtualStringTree1GetNodeDataSize
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OnInitNode = VirtualStringTree1InitNode
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end
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object ListBox1: TListBox
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Left = 256
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Height = 315
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Top = 24
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Width = 192
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DragMode = dmAutomatic
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Items.Strings = (
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'List Item 1'
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'List Item 2'
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'List Item 3'
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'List Item 4'
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'List Item 5'
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'List Item 6'
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)
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ItemHeight = 23
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OnDragDrop = ListBox1DragDrop
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OnDragOver = ListBox1DragOver
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ScrollWidth = 190
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TabOrder = 1
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end
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end
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unit fMain;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, StdCtrls,
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VirtualTrees, FakeActiveX;
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type
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{ TMainForm }
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TMainForm = class(TForm)
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ListBox1: TListBox;
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VirtualStringTree1: TVirtualStringTree;
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procedure ListBox1DragDrop(Sender, Source: TObject; X, Y: Integer);
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procedure ListBox1DragOver(Sender, Source: TObject; X, Y: Integer;
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State: TDragState; var Accept: Boolean);
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procedure VirtualStringTree1DragDrop(Sender: TBaseVirtualTree;
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Source: TObject; DataObject: IDataObject; Formats: TFormatArray;
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Shift: TShiftState; const Pt: TPoint; var Effect: Integer; Mode: TDropMode
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);
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procedure VirtualStringTree1DragOver(Sender: TBaseVirtualTree;
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Source: TObject; Shift: TShiftState; State: TDragState; const Pt: TPoint;
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Mode: TDropMode; var Effect: Integer; var Accept: Boolean);
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procedure VirtualStringTree1GetNodeDataSize(Sender: TBaseVirtualTree;
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var NodeDataSize: Integer);
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procedure VirtualStringTree1GetText(Sender: TBaseVirtualTree;
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Node: PVirtualNode; Column: TColumnIndex; TextType: TVSTTextType;
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var CellText: String);
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procedure VirtualStringTree1InitNode(Sender: TBaseVirtualTree; ParentNode,
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Node: PVirtualNode; var InitialStates: TVirtualNodeInitStates);
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private
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{ private declarations }
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public
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{ public declarations }
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end;
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var
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MainForm: TMainForm;
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implementation
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{$R *.lfm}
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type
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TNodeData = record
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Title: String;
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end;
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PNodeData = ^TNodeData;
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{ TMainForm }
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procedure TMainForm.VirtualStringTree1GetText(Sender: TBaseVirtualTree;
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Node: PVirtualNode; Column: TColumnIndex; TextType: TVSTTextType;
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var CellText: String);
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begin
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CellText := PNodeData(Sender.GetNodeData(Node))^.Title;
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end;
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procedure TMainForm.VirtualStringTree1InitNode(Sender: TBaseVirtualTree;
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ParentNode, Node: PVirtualNode; var InitialStates: TVirtualNodeInitStates);
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begin
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PNodeData(Sender.GetNodeData(Node))^.Title := 'VTV Item ' + IntToStr(Node^.Index);
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end;
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procedure TMainForm.ListBox1DragOver(Sender, Source: TObject; X, Y: Integer;
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State: TDragState; var Accept: Boolean);
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begin
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Accept := (Source = VirtualStringTree1) or (Source = ListBox1);
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end;
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procedure TMainForm.ListBox1DragDrop(Sender, Source: TObject; X, Y: Integer);
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var
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Node: PVirtualNode;
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begin
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if Source = VirtualStringTree1 then
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begin
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Node := VirtualStringTree1.FocusedNode;
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if Node <> nil then
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ListBox1.Items.Append(VirtualStringTree1.Text[Node, 0]);
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end;
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end;
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procedure TMainForm.VirtualStringTree1DragDrop(Sender: TBaseVirtualTree;
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Source: TObject; DataObject: IDataObject; Formats: TFormatArray;
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Shift: TShiftState; const Pt: TPoint; var Effect: Integer; Mode: TDropMode);
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var
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Node: PVirtualNode;
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S: String;
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begin
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if Source = ListBox1 then
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begin
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Node := Sender.AddChild(Sender.DropTargetNode);
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if ListBox1.ItemIndex = -1 then
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S := 'Unknow Item from List'
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else
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S := ListBox1.Items[ListBox1.ItemIndex];
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Sender.ValidateNode(Node, True);
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PNodeData(Sender.GetNodeData(Node))^.Title := S;
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end
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else if Source = Sender then
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begin
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Node := Sender.AddChild(Sender.DropTargetNode);
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Sender.ValidateNode(Node, True);
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PNodeData(Sender.GetNodeData(Node))^.Title := VirtualStringTree1.Text[Sender.FocusedNode, 0];
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end;
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end;
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procedure TMainForm.VirtualStringTree1DragOver(Sender: TBaseVirtualTree;
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Source: TObject; Shift: TShiftState; State: TDragState; const Pt: TPoint;
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Mode: TDropMode; var Effect: Integer; var Accept: Boolean);
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begin
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Accept := (Sender = VirtualStringTree1) or (Source = ListBox1);
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end;
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procedure TMainForm.VirtualStringTree1GetNodeDataSize(Sender: TBaseVirtualTree;
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var NodeDataSize: Integer);
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begin
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NodeDataSize := SizeOf(TNodeData);
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end;
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end.
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@ -0,0 +1,91 @@
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<?xml version="1.0"?>
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<CONFIG>
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<ProjectOptions>
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<Version Value="9"/>
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<General>
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<SessionStorage Value="InProjectDir"/>
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<MainUnit Value="0"/>
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<ResourceType Value="res"/>
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<UseXPManifest Value="True"/>
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<Icon Value="0"/>
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</General>
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<i18n>
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<EnableI18N LFM="False"/>
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</i18n>
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<VersionInfo>
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<StringTable ProductVersion=""/>
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</VersionInfo>
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<BuildModes Count="1">
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<Item1 Name="Default" Default="True"/>
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</BuildModes>
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<PublishOptions>
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<Version Value="2"/>
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<IncludeFileFilter Value="*.(pas|pp|inc|lfm|lpr|lrs|lpi|lpk|sh|xml)"/>
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<ExcludeFileFilter Value="*.(bak|ppu|o|so);*~;backup"/>
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</PublishOptions>
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<RunParams>
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<local>
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<FormatVersion Value="1"/>
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<LaunchingApplication PathPlusParams="/usr/bin/xterm -T 'Lazarus Run Output' -e $(LazarusDir)/tools/runwait.sh $(TargetCmdLine)"/>
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</local>
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</RunParams>
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<RequiredPackages Count="2">
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<Item1>
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<PackageName Value="virtualtreeview_package"/>
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</Item1>
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<Item2>
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<PackageName Value="LCL"/>
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</Item2>
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</RequiredPackages>
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<Units Count="2">
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<Unit0>
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<Filename Value="vtvdragdrop.lpr"/>
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<IsPartOfProject Value="True"/>
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<UnitName Value="vtvdragdrop"/>
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</Unit0>
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<Unit1>
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<Filename Value="fmain.pas"/>
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<IsPartOfProject Value="True"/>
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<ComponentName Value="MainForm"/>
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<ResourceBaseClass Value="Form"/>
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<UnitName Value="fMain"/>
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</Unit1>
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</Units>
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</ProjectOptions>
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<CompilerOptions>
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<Version Value="11"/>
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<Target>
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<Filename Value="vtvdragdrop"/>
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</Target>
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<SearchPaths>
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<IncludeFiles Value="$(ProjOutDir)"/>
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<UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
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</SearchPaths>
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<Linking>
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<Options>
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<Win32>
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<GraphicApplication Value="True"/>
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</Win32>
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</Options>
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</Linking>
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<Other>
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<CompilerMessages>
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<UseMsgFile Value="True"/>
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</CompilerMessages>
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<CompilerPath Value="$(CompPath)"/>
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</Other>
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</CompilerOptions>
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<Debugging>
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<Exceptions Count="3">
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<Item1>
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<Name Value="EAbort"/>
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</Item1>
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<Item2>
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<Name Value="ECodetoolError"/>
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</Item2>
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<Item3>
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<Name Value="EFOpenError"/>
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</Item3>
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</Exceptions>
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</Debugging>
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</CONFIG>
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@ -0,0 +1,21 @@
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program vtvdragdrop;
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{$mode objfpc}{$H+}
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uses
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{$IFDEF UNIX}{$IFDEF UseCThreads}
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cthreads,
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{$ENDIF}{$ENDIF}
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Interfaces, // this includes the LCL widgetset
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Forms, fMain, virtualtreeview_package
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{ you can add units after this };
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{$R *.res}
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begin
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RequireDerivedFormResource := True;
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Application.Initialize;
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Application.CreateForm(TMainForm, MainForm);
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Application.Run;
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end.
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