diff --git a/deps/libui/win32/stddialogs.cpp b/deps/libui/win32/stddialogs.cpp
index 89d26bacd7..45d46751a6 100644
--- a/deps/libui/win32/stddialogs.cpp
+++ b/deps/libui/win32/stddialogs.cpp
@@ -1,5 +1,6 @@
 // 22 may 2015
 #include "uipriv_windows.hpp"
+#Include "winextra.h"
 
 // TODO document all this is what we want
 // TODO do the same for font and color buttons
diff --git a/deps/libui/win32/winextra.h b/deps/libui/win32/winextra.h
new file mode 100644
index 0000000000..6d0bb3ee7d
--- /dev/null
+++ b/deps/libui/win32/winextra.h
@@ -0,0 +1,150 @@
+/* This file contains some Vista SDK stuff that is missing from the current
+   mingw-w64 headers */
+
+#ifndef WINEXTRA_H
+#define WINEXTRA_H
+
+/* winuser.h */
+
+#if (_WIN32_WINNT >= 0x0600)
+  WINUSERAPI WINBOOL WINAPI SetProcessDPIAware(VOID);
+  WINUSERAPI WINBOOL WINAPI IsProcessDPIAware(VOID);
+#endif
+
+/* commctrl.h */
+
+#ifndef NOTASKDIALOG
+#if (NTDDI_VERSION >= NTDDI_VISTA)
+#include <pshpack1.h>
+#define TD_WARNING_ICON     MAKEINTRESOURCEW(-1)
+#define TD_ERROR_ICON       MAKEINTRESOURCEW(-2)
+#define TD_INFORMATION_ICON MAKEINTRESOURCEW(-3)
+#define TD_SHIELD_ICON      MAKEINTRESOURCEW(-4)
+
+  typedef HRESULT (CALLBACK *PFTASKDIALOGCALLBACK)(HWND hwnd,UINT uNotification,WPARAM wParam,LPARAM lParam,LONG_PTR dwRefData);
+
+  enum _TASKDIALOG_FLAGS {
+    TDF_ENABLE_HYPERLINKS           = 0x0001,
+    TDF_USE_HICON_MAIN              = 0x0002,
+    TDF_USE_HICON_FOOTER            = 0x0004,
+    TDF_ALLOW_DIALOG_CANCELLATION   = 0x0008,
+    TDF_USE_COMMAND_LINKS           = 0x0010,
+    TDF_USE_COMMAND_LINKS_NO_ICON   = 0x0020,
+    TDF_EXPAND_FOOTER_AREA          = 0x0040,
+    TDF_EXPANDED_BY_DEFAULT         = 0x0080,
+    TDF_VERIFICATION_FLAG_CHECKED   = 0x0100,
+    TDF_SHOW_PROGRESS_BAR           = 0x0200,
+    TDF_SHOW_MARQUEE_PROGRESS_BAR   = 0x0400,
+    TDF_CALLBACK_TIMER              = 0x0800,
+    TDF_POSITION_RELATIVE_TO_WINDOW = 0x1000,
+    TDF_RTL_LAYOUT                  = 0x2000,
+    TDF_NO_DEFAULT_RADIO_BUTTON     = 0x4000,
+    TDF_CAN_BE_MINIMIZED            = 0x8000,
+    TDIF_SIZE_TO_CONTENT            = 0x1000000,
+    TDF_SIZE_TO_CONTENT             = 0x1000000
+  };
+  typedef int TASKDIALOG_FLAGS;
+
+  enum _TASKDIALOG_COMMON_BUTTON_FLAGS {
+    TDCBF_OK_BUTTON     = 0x01,
+    TDCBF_YES_BUTTON    = 0x02,
+    TDCBF_NO_BUTTON     = 0x04,
+    TDCBF_CANCEL_BUTTON = 0x08,
+    TDCBF_RETRY_BUTTON  = 0x10,
+    TDCBF_CLOSE_BUTTON  = 0x20
+  };
+  typedef int TASKDIALOG_COMMON_BUTTON_FLAGS;
+
+  typedef enum _TASKDIALOG_NOTIFICATIONS {
+    TDN_CREATED                = 0,
+    TDN_NAVIGATED              = 1,
+    TDN_BUTTON_CLICKED         = 2,
+    TDN_HYPERLINK_CLICKED      = 3,
+    TDN_TIMER                  = 4,
+    TDN_DESTROYED              = 5,
+    TDN_RADIO_BUTTON_CLICKED   = 6,
+    TDN_DIALOG_CONSTRUCTED     = 7,
+    TDN_VERIFICATION_CLICKED   = 8,
+    TDN_HELP                   = 9,
+    TDN_EXPANDO_BUTTON_CLICKED = 10
+  } TASKDIALOG_NOTIFICATIONS;
+
+  typedef enum _TASKDIALOG_MESSAGES {
+    TDM_NAVIGATE_PAGE = WM_USER + 101,
+    TDM_CLICK_BUTTON = WM_USER + 102,
+    TDM_SET_MARQUEE_PROGRESS_BAR = WM_USER + 103,
+    TDM_SET_PROGRESS_BAR_STATE = WM_USER + 104,
+    TDM_SET_PROGRESS_BAR_RANGE = WM_USER + 105,
+    TDM_SET_PROGRESS_BAR_POS = WM_USER + 106,
+    TDM_SET_PROGRESS_BAR_MARQUEE = WM_USER + 107,
+    TDM_SET_ELEMENT_TEXT = WM_USER + 108,
+    TDM_CLICK_RADIO_BUTTON = WM_USER + 110,
+    TDM_ENABLE_BUTTON = WM_USER + 111,
+    TDM_ENABLE_RADIO_BUTTON = WM_USER + 112,
+    TDM_CLICK_VERIFICATION = WM_USER + 113,
+    TDM_UPDATE_ELEMENT_TEXT = WM_USER + 114,
+    TDM_SET_BUTTON_ELEVATION_REQUIRED_STATE = WM_USER + 115,
+    TDM_UPDATE_ICON = WM_USER + 116
+  } TASKDIALOG_MESSAGES;
+
+  typedef enum _TASKDIALOG_ELEMENTS {
+    TDE_CONTENT,
+    TDE_EXPANDED_INFORMATION,
+    TDE_FOOTER,
+    TDE_MAIN_INSTRUCTION
+  } TASKDIALOG_ELEMENTS;
+
+  typedef enum _TASKDIALOG_ICON_ELEMENTS {
+    TDIE_ICON_MAIN,
+    TDIE_ICON_FOOTER
+  } TASKDIALOG_ICON_ELEMENTS;
+
+  typedef struct _TASKDIALOG_BUTTON {
+    int nButtonID;
+    PCWSTR pszButtonText;
+  } TASKDIALOG_BUTTON;
+
+  typedef struct _TASKDIALOGCONFIG {
+    UINT cbSize;
+    HWND hwndParent;
+    HINSTANCE hInstance;
+    TASKDIALOG_FLAGS dwFlags;
+    TASKDIALOG_COMMON_BUTTON_FLAGS dwCommonButtons;
+    PCWSTR pszWindowTitle;
+    __C89_NAMELESS union {
+      HICON hMainIcon;
+      PCWSTR pszMainIcon;
+    } DUMMYUNIONNAME;
+    PCWSTR pszMainInstruction;
+    PCWSTR pszContent;
+    UINT cButtons;
+    const TASKDIALOG_BUTTON *pButtons;
+    int nDefaultButton;
+    UINT cRadioButtons;
+    const TASKDIALOG_BUTTON *pRadioButtons;
+    int nDefaultRadioButton;
+    PCWSTR pszVerificationText;
+    PCWSTR pszExpandedInformation;
+    PCWSTR pszExpandedControlText;
+    PCWSTR pszCollapsedControlText;
+    __C89_NAMELESS union {
+      HICON hFooterIcon;
+      PCWSTR pszFooterIcon;
+    } DUMMYUNIONNAME2;
+    PCWSTR pszFooter;
+    PFTASKDIALOGCALLBACK pfCallback;
+    LONG_PTR lpCallbackData;
+    UINT cxWidth;
+  } TASKDIALOGCONFIG;
+
+  WINCOMMCTRLAPI HRESULT WINAPI TaskDialog(HWND hwndParent,HINSTANCE hInstance,PCWSTR pszWindowTitle,PCWSTR pszMainInstruction,PCWSTR pszContent,TASKDIALOG_COMMON_BUTTON_FLAGS dwCommonButtons,PCWSTR pszIcon,int *pnButton);
+  WINCOMMCTRLAPI HRESULT WINAPI TaskDialogIndirect(const TASKDIALOGCONFIG *pTaskConfig,int *pnButton,int *pnRadioButton,BOOL *pfVerificationFlagChecked);
+#include <poppack.h>
+#endif
+#endif
+
+/* dwmapi.h */
+
+HRESULT WINAPI DwmFlush(VOID);
+
+#endif