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program treeviewtest;
{$mode objfpc}{$H+}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
Classes,
SysUtils,
fpgfx,
gui_form,
gui_tree,
gui_checkbox,
gfxbase,
gfx_imagelist;
type
{ TMainForm }
TMainForm = class(TfpgForm)
private
tree: TfpgTreeView;
imagelist: TfpgImageList;
cbShowImages: TfpgCheckBox;
cbIndentNode: TfpgCheckBox;
procedure cbShowImagesChange(Sender: TObject);
procedure cbIndentNodeChange(Sender: TObject);
public
constructor Create(AOwner: TComponent); override;
destructor Destroy; override;
end;
{ TMainForm }
procedure TMainForm.cbIndentNodeChange(Sender: TObject);
begin
tree.IndentNodeWithNoImage := cbIndentNode.Checked;
end;
procedure TMainForm.cbShowImagesChange(Sender: TObject);
begin
tree.ShowImages := cbShowImages.Checked;
end;
constructor TMainForm.Create(AOwner: TComponent);
var
n: TfpgTreeNode;
n2: TfpgTreeNode;
i: integer;
s: string;
begin
inherited Create(AOwner);
WindowTitle := 'Treeview Test';
WindowPosition := wpUser;
SetPosition(100, 100, 300, 230);
// create a image list
imagelist := TfpgImageList.Create;
imagelist.AddItemFromFile(SetDirSeparators('../../../images/folder_16.bmp'), 0);
imagelist.AddItemFromFile(SetDirSeparators('../../../images/menu_preferences_16.bmp'), 1);
// create a treeview
tree := TfpgTreeView.Create(self);
tree.SetPosition(8, 8, Width-16, 200-16);
tree.Anchors := [anTop, anLeft, anRight, anBottom];
// tree.ShowColumns := True;
// tree.TreeLineStyle := lsSolid;
tree.ScrollWheelDelta := 30;
tree.ImageList := imagelist;
tree.ShowImages := True;
n := tree.RootNode.AppendText('Node 1');
n.ImageIndex := 0;
n.AppendText('Node 1.1').ImageIndex := 1;
n.AppendText('Node 1.2').ImageIndex := 1;
n := tree.RootNode.AppendText('Node 2');
n.ImageIndex := 0;
n.AppendText('Node 2.1').ImageIndex := 1;
n := n.AppendText('Node 2.2 The quick brownfox jumps over the...');
n.ImageIndex := 1;
for i := 1 to 3 do
begin
s := Format('Node 2.2.%d', [i]);
if i = 2 then
n2 := n.AppendText(s)
else
n.AppendText(s);
end;
n.Parent.AppendText('Node 2.3');
tree.RootNode.FirstSubNode.Next.Collapse;
tree.RootNode.AppendText('Node 3').ImageIndex := 0;
tree.Selection := n;
// n := tree.RootNode.FindSubNode('Node 2.2.2', True);
if Assigned(n2) then
begin
n2.AppendText('Child 1').AppendText('Child 2');
n2.Collapsed := False;
end;
// create a checkbox
cbShowImages := CreateCheckBox(self, 8, 204, 'Show images');
cbShowImages.Checked := True;
cbShowImages.OnChange := @cbShowImagesChange;
cbShowImages.Anchors := [anLeft, anBottom];
// create a checkbox
cbIndentNode := CreateCheckBox(self, 120, 204, 'Indent node with no image');
cbIndentNode.Checked := True;
cbIndentNode.OnChange := @cbIndentNodeChange;
cbIndentNode.Anchors := [anLeft, anBottom];
end;
destructor TMainForm.Destroy;
begin
tree.ImageList := nil;
imagelist.Free;
inherited Destroy;
end;
procedure MainProc;
var
frm: TMainForm;
begin
fpgApplication.Initialize;
frm := TMainForm.Create(nil);
try
frm.Show;
fpgApplication.Run;
finally
frm.Free;
end;
end;
begin
MainProc;
end.
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