Lazarus IDE doesn't switch Code GUI lazarus / 9-Editor ---------------------------------------------------------------------- berghem · 2020-02-03 20:37 Hi all Suddendly my IDE doesn't switch GUI <--> Source with F12 Key, I tryed to drag & drop a button in a source windows when I run my software i see the buttom... But my IDE switch the datamodule GUI... I use Lazarus 2.0.6. for Windows 64 bit Can you help me? ---------------------------------------------------------------------- trev · 2020-02-04 00:21 Make sure the code window (not object inspector) is active when switching. ---------------------------------------------------------------------- berghem · 2020-02-04 06:02 Yes, the window code is active when I press F12 the label and in tabsheet change color from black to gray, but I don't see the gui... ---------------------------------------------------------------------- winni · 2020-02-04 16:23 Hi! Exit lazarus. Take your editor and load from your lazarus directory the file environmentoptions.xml . Search  for MainIDE. For me this is written:   Code: XML  [Select][+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i                               * The WindowState should not be minimized. * Vsible should be true Change the values if needed. Save and leave the file. Start Lazarus again. Hope it helped. Winni