diff --git a/lcl/interfaces/cocoa/cocoaprivate.pp b/lcl/interfaces/cocoa/cocoaprivate.pp
index 0a9dc6de8a..b1d69e5e7e 100644
--- a/lcl/interfaces/cocoa/cocoaprivate.pp
+++ b/lcl/interfaces/cocoa/cocoaprivate.pp
@@ -70,6 +70,7 @@ type
     function lclIsEnabled: Boolean; message 'lclIsEnabled';
     procedure lclSetEnabled(AEnabled: Boolean); message 'lclSetEnabled:';
     function lclIsVisible: Boolean; message 'lclIsVisible';
+    procedure lclSetVisible(AVisible: Boolean); message 'lclSetVisible:';
     function lclWindowState: Integer; message 'lclWindowState';
 
     procedure lclInvalidateRect(const r: TRect); message 'lclInvalidateRect:';
@@ -92,6 +93,7 @@ type
 
   LCLViewExtension = objccategory(NSView)
     function lclIsVisible: Boolean; message 'lclIsVisible'; reintroduce;
+    procedure lclSetVisible(AVisible: Boolean); message 'lclSetVisible:'; reintroduce;
     function lclIsPainting: Boolean; message 'lclIsPainting';
     procedure lclInvalidateRect(const r: TRect); message 'lclInvalidateRect:'; reintroduce;
     procedure lclInvalidate; message 'lclInvalidate'; reintroduce;
@@ -120,6 +122,7 @@ type
 
   LCLWindowExtension = objccategory(NSWindow)
     function lclIsVisible: Boolean; message 'lclIsVisible'; reintroduce;
+    procedure lclSetVisible(AVisible: Boolean); message 'lclSetVisible:'; reintroduce;
     function lclIsEnabled: Boolean; message 'lclIsEnabled'; reintroduce;
     procedure lclSetEnabled(AEnabled: Boolean); message 'lclSetEnabled:'; reintroduce;
 
@@ -978,6 +981,10 @@ begin
   Result := False;
 end;
 
+procedure LCLObjectExtension.lclSetVisible(AVisible: Boolean);
+begin
+end;
+
 function LCLObjectExtension.lclWindowState: Integer;
 begin
   Result := SIZENORMAL;
@@ -1092,11 +1099,16 @@ begin
   SetEnabled(AEnabled);
 end;
 
-function LCLViewExtension.lclIsVisible:Boolean;
+function LCLViewExtension.lclIsVisible: Boolean;
 begin
   Result := not isHidden;
 end;
 
+procedure LCLViewExtension.lclSetVisible(AVisible: Boolean);
+begin
+  setHidden(not AVisible);
+end;
+
 function LCLViewExtension.lclIsPainting: Boolean;
 begin
   Result := Assigned(lclGetCallback) and Assigned(lclGetCallback.GetContext);
@@ -1205,11 +1217,19 @@ end;
 
 { LCLWindowExtension }
 
-function LCLWindowExtension.lclIsVisible:Boolean;
+function LCLWindowExtension.lclIsVisible: Boolean;
 begin
   Result := isVisible;
 end;
 
+procedure LCLWindowExtension.lclSetVisible(AVisible: Boolean);
+begin
+  if AVisible then
+    orderFrontRegardless
+  else
+    orderOut(nil);
+end;
+
 function LCLWindowExtension.lclIsEnabled: Boolean;
 begin
   Result := contentView.lclIsEnabled;
diff --git a/lcl/interfaces/cocoa/cocoawscommon.pas b/lcl/interfaces/cocoa/cocoawscommon.pas
index b2ed070c40..0b2b9d9a25 100644
--- a/lcl/interfaces/cocoa/cocoawscommon.pas
+++ b/lcl/interfaces/cocoa/cocoawscommon.pas
@@ -82,6 +82,7 @@ type
     class procedure SetBounds(const AWinControl: TWinControl; const ALeft, ATop, AWidth, AHeight: Integer); override;
     class procedure SetCursor(const AWinControl: TWinControl; const ACursor: HCursor); override;
     class procedure SetFont(const AWinControl: TWinControl; const AFont: TFont); override;
+    class procedure ShowHide(const AWinControl: TWinControl); override;
   end;
 
 
@@ -910,9 +911,9 @@ end;
 
 class function TCocoaWSWinControl.GetClientBounds(const AWincontrol: TWinControl; var ARect: TRect): Boolean;
 begin
-  Result:=(AWinControl.Handle<>0);
-  if not Result then Exit;
-  ARect:=NSObject(AWinControl.Handle).lclClientFrame;
+  Result := AWinControl.HandleAllocated;
+  if Result then
+    ARect := NSObject(AWinControl.Handle).lclClientFrame;
 end;
 
 class function TCocoaWSWinControl.GetClientRect(const AWincontrol: TWinControl; var ARect: TRect): Boolean;
@@ -929,7 +930,7 @@ var
   Obj: NSObject;
   Size: NSSize;
 begin
-  if (AWinControl.Handle <> 0) then
+  if AWinControl.HandleAllocated then
   begin
     Obj := NSObject(AWinControl.Handle);
 {
@@ -946,7 +947,7 @@ end;
 class procedure TCocoaWSWinControl.SetBounds(const AWinControl: TWinControl;
   const ALeft, ATop, AWidth, AHeight: Integer);
 begin
-  if (AWinControl.Handle<>0) then
+  if AWinControl.HandleAllocated then
     NSObject(AWinControl.Handle).lclSetFrame(Bounds(ALeft, ATop, AWidth, AHeight));
 end;
 
@@ -1011,6 +1012,12 @@ begin
   end;
 end;
 
+class procedure TCocoaWSWinControl.ShowHide(const AWinControl: TWinControl);
+begin
+  if AWinControl.HandleAllocated then
+    NSObject(AWinControl.Handle).lclSetVisible(AWinControl.HandleObjectShouldBeVisible);
+end;
+
 { TCocoaWSCustomControl }
 
 class function TCocoaWSCustomControl.CreateHandle(const AWinControl: TWinControl;
@@ -1025,27 +1032,33 @@ end;
 
 { LCLWSViewExtension }
 
-function LCLWSViewExtension.lclInitWithCreateParams(const AParams:TCreateParams): id;
+function LCLWSViewExtension.lclInitWithCreateParams(const AParams: TCreateParams): id;
 var
   p: NSView;
   ns: NSRect;
 begin
-  p:=nil;
-  if (AParams.WndParent<>0) then begin
+  p := nil;
+  setHidden(AParams.Style and WS_VISIBLE = 0);
+  if (AParams.WndParent <> 0) then
+  begin
     if (NSObject(AParams.WndParent).isKindOfClass_(NSView)) then
-      p:=NSView(AParams.WndParent)
-    else if (NSObject(AParams.WndParent).isKindOfClass_(NSWindow)) then
-      p:=NSWindow(AParams.WndParent).contentView;
+      p := NSView(AParams.WndParent)
+    else
+    if (NSObject(AParams.WndParent).isKindOfClass_(NSWindow)) then
+      p := NSWindow(AParams.WndParent).contentView;
   end;
   with AParams do
-    if Assigned(p)
-      then LCLToNSRect(Types.Bounds(X,Y,Width, Height), p.frame.size.height, ns)
-      else LCLToNSRect(Types.Bounds(X,Y,Width, Height), ns);
+    if Assigned(p) then
+      LCLToNSRect(Types.Bounds(X,Y,Width, Height), p.frame.size.height, ns)
+    else
+      LCLToNSRect(Types.Bounds(X,Y,Width, Height), ns);
 
-  Result:=initWithFrame(ns);
-  if not Assigned(Result) then Exit;
+  Result := initWithFrame(ns);
+  if not Assigned(Result) then
+    Exit;
 
-  if Assigned(p) then p.addSubview(Self);
+  if Assigned(p) then
+    p.addSubview(Self);
   SetViewDefaults(Self);
 end;
 
diff --git a/lcl/interfaces/cocoa/cocoawsforms.pp b/lcl/interfaces/cocoa/cocoawsforms.pp
index d165fc633b..862013d22d 100644
--- a/lcl/interfaces/cocoa/cocoawsforms.pp
+++ b/lcl/interfaces/cocoa/cocoawsforms.pp
@@ -91,8 +91,6 @@ type
   published
     class function CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle; override;
 
-    class procedure ShowHide(const AWinControl: TWinControl); override; //TODO: rename to SetVisible(control, visible)
-
     class function GetText(const AWinControl: TWinControl; var AText: String): Boolean; override;
     class function GetTextLen(const AWinControl: TWinControl; var ALength: Integer): Boolean; override;
     class procedure SetText(const AWinControl: TWinControl; const AText: String); override;
@@ -223,16 +221,6 @@ begin
   Result := TLCLIntfHandle(win);
 end;
 
-class procedure TCocoaWSCustomForm.ShowHide(const AWinControl: TWinControl);
-begin
-  if not AWinControl.HandleAllocated then
-    Exit;
-  if AWinControl.HandleObjectShouldBeVisible then
-    NSWindow(AWinControl.Handle).orderFrontRegardless
-  else
-    NSWindow(AWinControl.Handle).orderOut(nil);
-end;
-
 class function TCocoaWSCustomForm.GetText(const AWinControl: TWinControl; var AText: String): Boolean;
 begin
   Result := AWinControl.HandleAllocated;
diff --git a/lcl/interfaces/cocoa/cocoawsstdctrls.pp b/lcl/interfaces/cocoa/cocoawsstdctrls.pp
index 9f6f9647b2..4b1c6a1fb5 100644
--- a/lcl/interfaces/cocoa/cocoawsstdctrls.pp
+++ b/lcl/interfaces/cocoa/cocoawsstdctrls.pp
@@ -158,7 +158,7 @@ type
 
   TCocoaWSButton = class(TWSButton)
   published
-    class function  CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle; override;
+    class function CreateHandle(const AWinControl: TWinControl; const AParams: TCreateParams): TLCLIntfHandle; override;
     class procedure SetDefault(const AButton: TCustomButton; ADefault: Boolean); override;
   end;
 
@@ -221,7 +221,8 @@ begin
     cap := NSStringUTF8(AParams.Caption);
     Result.setTitle(cap);
     cap.release;
-    if btnBezel<>0 then Result.setBezelStyle(btnBezel);
+    if btnBezel <> 0 then
+      Result.setBezelStyle(btnBezel);
     Result.setButtonType(btnType);
   end;
 end;