Create constrained windows in a hidden state.

views/widget/native_widget_win.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "views/widget/native_widget_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include <algorithm>
@@ skipping 2217 matching lines @@
 void NativeWidgetWin::SetInitParams(const Widget::InitParams& params) {
   // Set non-style attributes.
   ownership_ = params.ownership;
 
   DWORD style = WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
   DWORD ex_style = 0;
   DWORD class_style = CS_DBLCLKS;
 
   // Set type-independent style attributes.
   if (params.child)
-    style |= WS_CHILD | WS_VISIBLE;
+    style |= WS_CHILD;
   if (params.show_state == ui::SHOW_STATE_MAXIMIZED)
     style |= WS_MAXIMIZE;
   if (params.show_state == ui::SHOW_STATE_MINIMIZED)
     style |= WS_MINIMIZE;
   if (!params.accept_events)
     ex_style |= WS_EX_TRANSPARENT;
   if (!params.can_activate)
     ex_style |= WS_EX_NOACTIVATE;
   if (params.keep_on_top)
     ex_style |= WS_EX_TOPMOST;
@@ skipping 22 matching lines @@
         // NOTE: Turning this off means we lose the close button, which is bad.
         // Turning it on though means the user can maximize or size the window
         // from the system menu, which is worse. We may need to provide our own
         // menu to get the close button to appear properly.
         // style &= ~WS_SYSMENU;
       }
       ex_style |= delegate_->IsDialogBox() ? WS_EX_DLGMODALFRAME : 0;
       break;
     }
     case Widget::InitParams::TYPE_CONTROL:
+      style |= WS_VISIBLE;
       break;
     case Widget::InitParams::TYPE_WINDOW_FRAMELESS:
       style |= WS_POPUP;
       break;
     case Widget::InitParams::TYPE_BUBBLE:
       style |= WS_POPUP;
       style |= WS_CLIPCHILDREN;
       break;
     case Widget::InitParams::TYPE_POPUP:
       style |= WS_POPUP;
@@ skipping 329 matching lines @@
   return (GetKeyState(VK_LBUTTON) & 0x80) ||
     (GetKeyState(VK_RBUTTON) & 0x80) ||
     (GetKeyState(VK_MBUTTON) & 0x80) ||
     (GetKeyState(VK_XBUTTON1) & 0x80) ||
     (GetKeyState(VK_XBUTTON2) & 0x80);
 }
 
 }  // namespace internal
 
 }  // namespace views