Toolbar and client area of MDI child maximization lazarus / 31-LCL ---------------------------------------------------------------------- vfclists · 2016-03-12 23:08 I am doing an MDI application using Qt and I have added a Toolbar which is hidden or resized on demand to make more space when the MDI forms are maximized. However I have noticed that whenever I maximize the MDI form it does not occupy the space where the Toolbar is even if the Toolbar has been hidden or its height has been set to zero . Is that normal behaviour? Does the size of the Toolbar influence the space where the MDI form will be maximized regardless of whether it is occuping the space on not? ---------------------------------------------------------------------- staratel20 · 2016-03-14 08:33 I meet the same problem with TMainMenu - when I call Code: Pascal  [Select][+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i MainMenu.Items.Visible:=False; MainMenu was still visible. I can't isolate the problem, project to big and behaviour are float. So I workaround it by temporary detach Parent: Code: Pascal  [Select][+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i MainMenu.Parent:=nil; and when I need it on form: Code: Pascal  [Select][+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i MainMenu.Parent:=Self;