5:
How can I change the tooltip's visual appearance

ToolTip1 := (IUnknown(ComObj.CreateComObject(ComObj.ProgIDToClassID('Exontrol.ToolTip.1'))) as EXTOOLTIPLib_TLB.ToolTip);
with ToolTip1 do
begin
	VisualAppearance.Add(1,'c:\exontrol\images\normal.ebn');
	Appearance := EXTOOLTIPLib_TLB.AppearanceEnum($1000000);
	ShowToolTip('This is a tooltip that''s shown with a different <b>visual apparance</b>.',Null,Null,Null,Null);
end
4:
How can I get the tooltip being semi-transparent

ToolTip1 := (IUnknown(ComObj.CreateComObject(ComObj.ProgIDToClassID('Exontrol.ToolTip.1'))) as EXTOOLTIPLib_TLB.ToolTip);
with ToolTip1 do
begin
	Transparency := 50;
	ShowToolTip('This is a tooltip that''s shown with a different <b>visual apparance</b>.',Null,Null,Null,Null);
end
3:
How can I get displayed a picture inside the tooltip

ToolTip1 := (IUnknown(ComObj.CreateComObject(ComObj.ProgIDToClassID('Exontrol.ToolTip.1'))) as EXTOOLTIPLib_TLB.ToolTip);
with ToolTip1 do
begin
	HTMLPicture['pic1'] := 'c:\exontrol\images\zipdisk.gif';
	ShowToolTip('<c><img>pic1</img><br>This is a bit of tooltip with a picture attached.',Null,Null,Null,Null);
end
2:
How can I get notified once the user clicks a hyperlink inside the tooltip

// AnchorClick event - Occurs when an anchor element is clicked.
procedure TForm1.ToolTip1AnchorClick(ASender: TObject; AnchorID : WideString;Options : WideString);
begin
	with ToolTip1 do
	begin
		OutputDebugString( 'You have clicked the anchor' );
		OutputDebugString( AnchorID );
	end
end;

ToolTip1 := (IUnknown(ComObj.CreateComObject(ComObj.ProgIDToClassID('Exontrol.ToolTip.1'))) as EXTOOLTIPLib_TLB.ToolTip);
with ToolTip1 do
begin
	ShowToolTip('This is a bit of text that''s displayed when <a A1>ShowToolTip</a> method is called.',Null,Null,Null,Null);
end
1:
How can I display the tooltip

ToolTip1 := (IUnknown(ComObj.CreateComObject(ComObj.ProgIDToClassID('Exontrol.ToolTip.1'))) as EXTOOLTIPLib_TLB.ToolTip);
with ToolTip1 do
begin
	ShowToolTip('This is a bit of text that''s displayed when <b>ShowToolTip</b> method is called.',Null,Null,Null,Null);
end