Question

I have a ListView with ViewStyle = vsReport and two popup menus:

1. Column popup menu, which I want to open when user right-clicking the header bar
2. Item popup menu, must open when the user right-clicking any list item/subitem or whitespace below items.

What is the most correct way to show that menus? Which events should I handle?

The problem is when I set ListView.PopupMenu property, the popup menu appearing after right-clicking any point in ListView’s client rectangle.

When I handle ListView.OnColumnRightClick event, if fires only after clicking on column header, excluding free space of the header bar (on the right of columns).

Event LisView.OnMouseUp fires only after right-clicking on whitespace below items.

Answer 1

You don’t have to use the PopupMenu property of the listview, leave it unset and you can attach a handler to OnContextPopup event and launch whatever popup menu you’d like depending on the position. Example:

procedure TForm1.ListViewContextPopup(Sender: TObject; MousePos: TPoint;
  var Handled: Boolean);
var
  HeaderRect: TRect;
  Pos: TPoint;
begin
  GetWindowRect(ListView_GetHeader(ListView.Handle), HeaderRect);
  Pos := ListView.ClientToScreen(MousePos);
  if PtInRect(HeaderRect, Pos) then
    PopupMenuColumns.Popup(Pos.X, Pos.Y)
  else
    PopupMenuItems.Popup(Pos.X, Pos.Y);
end;