basic_window.cpp

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#ifndef BASIC_WINDOW_IMPLEMENTATION_FILE
#define BASIC_WINDOW_IMPLEMENTATION_FILE

/*****************************************************************************\
*                                                                             *
*  Name   : basic_window                                                      *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 2000-$now By Author.  This program is free software; you can  *
* redistribute it and/or modify it under the terms of the GNU General Public  *
* License as published by the Free Software Foundation; either version 2 of   *
* the License or (at your option) any later version.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "basic_window.h"
#include "basic_window.rh"

#include <basis/convert_utf.h>
#include <basis/istring.h>
#include <basis/log_base.h>

#undef LOG
#define LOG(s) CLASS_EMERGENCY_LOG(program_wide_logger(), s)

basic_window::basic_window(application_instance instance, const istring &window_title,
    const istring &window_class)
: _instance(instance),
  _window_title(new istring(window_title)),
  _window_class(new istring(window_class))
{
}

basic_window::~basic_window()
{
  WHACK(_window_title);
  WHACK(_window_class);
}

ATOM basic_window::register_class(u_int *icon_id, u_int *menu_id,
    u_int *small_icon_id)
{
  if (!small_icon_id) small_icon_id = icon_id;

  WNDCLASSEX wcex;

  wcex.cbSize = sizeof(WNDCLASSEX); 

  wcex.style = CS_HREDRAW | CS_VREDRAW;
  wcex.lpfnWndProc = (WNDPROC)WndProc;
  wcex.cbClsExtra = 0;
  wcex.cbWndExtra = 0;
  wcex.hInstance = _instance;
  wcex.hIcon = LoadIcon(_instance, (LPCTSTR)icon_id);
  wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
  wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
  wcex.lpszMenuName = (LPCTSTR)menu_id;
  to_unicode_persist(temp_class, *_window_class);
  wcex.lpszClassName = temp_class;
  wcex.hIconSm = LoadIcon(_instance, (LPCTSTR)small_icon_id);

  return RegisterClassEx(&wcex);
}

bool basic_window::create(int nCmdShow)
{
  FUNCDEF("create");
  HWND hWnd = CreateWindow(to_unicode_temp(*_window_class),
      to_unicode_temp(*_window_title), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
      0, CW_USEDEFAULT, 0, NULL, NULL, _instance, NULL);

  if (!hWnd) {
    LOG(istring("failed to create the window: system error is ")
        + portable::system_error_text(portable::system_error()));
    return false;
  }

  ShowWindow(hWnd, nCmdShow);
//check error conditions?

  UpdateWindow(hWnd);
//check error conditions?

  return true;
}

//hmmm: hook this into the virtual wnd_proc callback method to enable
//      real windows to be built.

LRESULT CALLBACK basic_window::WndProc(HWND hWnd, UINT message,
    WPARAM wParam, LPARAM lParam)
{
  int wmId, wmEvent;
  PAINTSTRUCT ps;
  HDC hdc;

  switch (message) 
  {
    case WM_COMMAND:
      wmId    = LOWORD(wParam); 
      wmEvent = HIWORD(wParam); 
      // Parse the menu selections:
      switch (wmId)
      {
        case ID_APP_EXIT:
//is destroy the right thing to do?
//
PostMessage(hWnd, WM_CLOSE, NIL, NIL);
//trying this now.
           break;
        default:
           return DefWindowProc(hWnd, message, wParam, lParam);
      }
      break;
    case WM_PAINT:
      hdc = BeginPaint(hWnd, &ps);
      // hmmm: Add any drawing code here...
//      RECT rt;
//      GetClientRect(hWnd, &rt);
//      DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER);
      EndPaint(hWnd, &ps);
      break;
    case WM_DESTROY:
      PostQuitMessage(0);
      break;
    default:
      return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}


#endif //BASIC_WINDOW_IMPLEMENTATION_FILE

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