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 * apih
 * This file is a part of NSIS.
 * Copyright (C) 1999-2009 Nullsoft and Contributors
 * Licensed under the zlib/libpng license (the "License");
 * you may not use this file except in compliance with the License.
 * Licence details can be found in the file COPYING.
 * This software is provided 'as-is', without any express or implied
 * warranty.


// Starting with NSIS 2.42, you can check the version of the plugin API in exec_flags->plugin_api_version
// The format is 0xXXXXYYYY where X is the major version and Y is the minor version (MAKELONG(y,x))
// When doing version checks, always remember to use >=, ex: if (pX->exec_flags->plugin_api_version >= NSISPIAPIVER_1_0) {}

#define NSISPIAPIVER_1_0 0x00010000

// NSIS Plug-In Callback Messages
enum NSPIM 
      NSPIM_UNLOAD,    // This is the last message a plugin gets, do final cleanup
      NSPIM_GUIUNLOAD, // Called after .onGUIEnd

// Prototype for callbacks registered with extra_parameters->RegisterPluginCallback()
// Return NULL for unknown messages
// Should always be __cdecl for future expansion possibilities

// extra_parameters data structures containing other interesting stuff
// but the stack, variables and HWND passed on to plug-ins.
typedef struct
  int autoclose;
  int all_user_var;
  int exec_error;
  int abort;
  int exec_reboot; // NSIS_SUPPORT_REBOOT
  int reboot_called; // NSIS_SUPPORT_REBOOT
  int XXX_cur_insttype; // depreacted
  int plugin_api_version; // see NSISPIAPIVER_CURR
                          // used to be XXX_insttype_changed
  int instdir_error;
  int rtl;
  int errlvl;
  int alter_reg_view;
  int status_update;
} exec_flags_t;

#ifndef NSISCALL
#  define NSISCALL __stdcall

typedef struct {
  exec_flags_t *exec_flags;
  int (NSISCALL *ExecuteCodeSegment)(int, HWND);
  void (NSISCALL *validate_filename)(char *);
  int (NSISCALL *RegisterPluginCallback)(HMODULE, NSISPLUGINCALLBACK); // returns 0 on success, 1 if already registered and < 0 on errors
} extra_parameters;

// Definitions for page showing plug-ins
// See Ui.c to understand better how they're used

// sent to the outer window to tell it to go to the next inner window

// custom pages should send this message to let NSIS know they're ready

// sent as wParam with WM_NOTIFY_OUTER_NEXT when user cancels - heed its warning
#define NOTIFY_BYE_BYE 'x'

#endif /* _PLUGIN_H_ */

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