diff --git a/lcl/extctrls.pp b/lcl/extctrls.pp
index 4adc5a3839..9cea4ed52e 100644
--- a/lcl/extctrls.pp
+++ b/lcl/extctrls.pp
@@ -69,9 +69,6 @@ type
     function  DialogChar(var Message: TLMKey): boolean; override;
     procedure DoHide; dynamic;
     procedure DoShow; dynamic;
-    {$IFDEF EnableSizePatch}
-    procedure DoSendBoundsToInterface; override;
-    {$ENDIF}
   public
     constructor Create(TheOwner: TComponent); override;
     procedure AdjustClientRect(var ARect: TRect); override;
diff --git a/lcl/include/custompage.inc b/lcl/include/custompage.inc
index 2d425ec626..b19e73b5a6 100644
--- a/lcl/include/custompage.inc
+++ b/lcl/include/custompage.inc
@@ -200,13 +200,6 @@ begin
     FOnShow(Self);
 end;
 
-{$IFDEF EnableSizePatch}
-procedure TCustomPage.DoSendBoundsToInterface;
-begin
-  // a page is only sized by the interface
-end;
-{$ENDIF}
-
 function TCustomPage.IsControlVisible: Boolean;
 begin
   if Parent is TCustomNotebook then
diff --git a/lcl/interfaces/gtk/gtkcallback.inc b/lcl/interfaces/gtk/gtkcallback.inc
index 8231502bdd..dfcff8e65d 100644
--- a/lcl/interfaces/gtk/gtkcallback.inc
+++ b/lcl/interfaces/gtk/gtkcallback.inc
@@ -1833,8 +1833,47 @@ var
   //SelectedFont: PGdkFont;
 
   function CheckOpenedFilename(const AFilename: string): boolean;
+  var
+    MenuWidget: PGtkWidget;
+    AFilterEntry: PFileSelFilterEntry;
   begin
     Result:=true;
+    {$IFNDEF GTK2}
+    // check if entered file are a real directory
+    if DirectoryExists(AFileName) then
+    begin
+      // if allowed then jump to that directory
+      if not (ofNoChangeDir in TOpenDialog(TheDialog).Options) then
+      begin
+        // change dir
+        gtk_file_selection_set_filename(PGtkFileSelection(FPointer),
+                                        PChar(AppendPathDelim(AFileName)));
+        // populate file list
+        MenuWidget := gtk_object_get_data(PGtkObject(PGtkFileSelection(FPointer)), 'LCLFilterMenu');
+        if (MenuWidget <> nil) then begin
+          AFilterEntry := gtk_object_get_data(PGtkObject(gtk_menu_get_active(
+                                              PGtkMenu(MenuWidget))), 'LCLIsFilterMenuItem');
+          if ((AFilterEntry<>nil) and (AFilterEntry^.Mask<>nil)) then
+          PopulateFileAndDirectoryLists(PGtkFileSelection(FPointer), AFilterEntry^.Mask);
+        end;
+      end;
+      // wait for correct input
+      result:=False;
+      Exit;
+    end;
+    // maybe user entered nonexistent dir
+    if ((AFileName<>'') and (IsPathDelimiter(AFileName, Length(AFileName)))) then
+    begin
+      // cant jump to nonexistent dir
+      if not (ofNoChangeDir in TOpenDialog(TheDialog).Options) then
+        MessageDlg(rsfdDirectoryMustExist, Format(rsfdDirectoryNotExist,[AFileName]),
+                   mtError, [mbCancel], 0); // GTK2 shows "The folder contents could not be displayed"
+      // wait for correct input
+      result:=False;
+      Exit;
+    end;
+    {$ENDIF}
+    // maybe file already exists
     if (ofOverwritePrompt in TOpenDialog(theDialog).Options)
     and FileExists(AFilename) then
     begin
diff --git a/lcl/interfaces/gtk/gtkwsextctrls.pp b/lcl/interfaces/gtk/gtkwsextctrls.pp
index 7d51d1f44e..cfb08ab7c5 100644
--- a/lcl/interfaces/gtk/gtkwsextctrls.pp
+++ b/lcl/interfaces/gtk/gtkwsextctrls.pp
@@ -45,6 +45,7 @@ type
   protected
   public
     class procedure UpdateProperties(const ACustomPage: TCustomPage); override;
+    class procedure SetBounds(const AWinControl: TWinControl; const ALeft, ATop, AWidth, AHeight: Integer); override;
   end;
 
   { TGtkWSCustomNotebook }
@@ -226,6 +227,12 @@ begin
   UpdateNotebookPageTab(nil, ACustomPage);
 end;
 
+class procedure TGtkWSCustomPage.SetBounds(const AWinControl: TWinControl;
+  const ALeft, ATop, AWidth, AHeight: Integer);
+begin
+  // ignore resizes from the LCL
+end;
+
 { TGtkWSCustomNotebook }
 
 class function TGtkWSCustomNotebook.CreateHandle(const AWinControl: TWinControl;
diff --git a/tools/install/cross_unix/HowToCreate_fpc_crosswin32_deb.txt b/tools/install/cross_unix/HowToCreate_fpc_crosswin32_deb.txt
index 764a3d807c..134647989a 100644
--- a/tools/install/cross_unix/HowToCreate_fpc_crosswin32_deb.txt
+++ b/tools/install/cross_unix/HowToCreate_fpc_crosswin32_deb.txt
@@ -2,7 +2,9 @@ How to create the fpc_crosswin32 deb
 
 This deb was only tested under linux.
 
-For configuration see below.
+The base directory is $BuildRoot. Default value is ~/freepascal
+  To change it use for example:
+  []$ export BuildRoot=/home/user/freepascal
 
 First get the FPC sources and the binutils.
 
@@ -27,10 +29,3 @@ Then build the fpc_crosswin32 deb and install it:
 
 Now you can cross compile from linux to win32.
 
-
-================================================================================
-
-The following environment variables are handled:
-The base directory BuildRoot. Default value is ~/freepascal
-  []$ export BuildRoot=/home/user/freepascal
-