Using of the inspector control would block TAB key for the entire windows 7 system. about zcontrols

[pyscripter]

The problem is in

procedure TzCustomObjInspector.CreateWnd;
begin
  inherited;
  FSelectedIndex := -1;
  if not(csDesigning in ComponentState) then
    RegisterHotKey(Handle, 0, 0, VK_TAB);
end;

and
procedure TzCustomObjInspector.WMHotKey(var Msg: TWMHotKey);

I am not exactly sure what is the purpose of this. If you comment out the RegisterHotKey call you will not have this issue.

[MahdiSafsafi]

@pyscripter The purpose of tab is to allow searching for properties. For example press TAB and start entering some text such Ca and TZObjectInspector will jump to Caption property.

@edwinyzh I just started investigating the issue ... and you're right ! same scenario happens to me.