interact.h

windows mobile phone source code

/*
 * interact.h
 *
 * Basic GUI interactor.
 *
 * Portable Windows Library
 *
 * Copyright (c) 1993-1998 Equivalence Pty. Ltd.
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 * the License for the specific language governing rights and limitations
 * under the License.
 *
 * The Original Code is Portable Windows Library.
 *
 * The Initial Developer of the Original Code is Equivalence Pty. Ltd.
 *
 * Portions are Copyright (C) 1993 Free Software Foundation, Inc.
 * All Rights Reserved.
 *
 * Contributor(s): ______________________________________.
 *
 * $Log: interact.h,v $
 * Revision 1.18  2001/05/22 12:49:33  robertj
 * Did some seriously wierd rewrite of platform headers to eliminate the
 *   stupid GNU compiler warning about braces not matching.
 *
 * Revision 1.17  2000/04/13 23:18:42  robertj
 * Fixed problems with sizing controls with scroll bars.
 *
 * Revision 1.16  1998/11/30 03:00:03  robertj
 * New directory structure
 *
 * Revision 1.15  1998/09/24 03:40:31  robertj
 * Added open software license.
 *
 * Revision 1.14  1998/09/21 13:30:52  robertj
 * Changes to support new PListView class. Different call back method.
 *
 * Revision 1.13  1998/09/14 13:00:46  robertj
 * Fixed major problem with resource leak every time a control is painted.
 *
 * Revision 1.12  1996/08/08 10:09:57  robertj
 * Directory structure changes for common files.
 *
 * Revision 1.11  1995/12/10 11:53:53  robertj
 * Support for controls background colours.
 *
 * Revision 1.10  1995/11/09 12:25:48  robertj
 * Moved window style bits to member variable.
 *
 * Revision 1.9  1995/04/02 09:27:47  robertj
 * Added "balloon" help.
 *
 * Revision 1.8  1995/03/12 05:00:13  robertj
 * Re-organisation of DOS/WIN16 and WIN32 platforms to maximise common code.
 * Used built-in equate for WIN32 API (_WIN32).
 *
 * Revision 1.7  1995/01/27  11:21:24  robertj
 * Underscored library variables.
 * Fixed bug in nested messages.
 *
 * Revision 1.6  1994/11/28  12:40:28  robertj
 * Fixed problem with setting fonts on individual controls in a dialog loaded from resource. This
 *   required better logic in deleting HFONTs on an interactor.
 *
 * Revision 1.5  1994/10/23  05:46:38  robertj
 * Changed window messaging technique.
 *
 * Revision 1.4  1994/07/17  10:46:06  robertj
 * Enhancements, bug fixes etc.
 *
 * Revision 1.3  1994/06/25  11:55:15  robertj
 * Unix version synchronisation.
 *
 * Revision 1.2  1994/04/20  12:17:44  robertj
 * assert changes
 *
 * Revision 1.1  1994/04/12  08:21:52  robertj
 * Initial revision
 *
 */

#ifndef _PINTERACTOR
#define _PINTERACTOR

#define P_NULL_WINDOW ((HWND)NULL)
#define P_DEAD_WINDOW ((HWND)-1)

#if defined(_WIN32)
#define PGET_CLASS_VALUE(hWnd, name) GetClassLong(hWnd, GCL_##name)
#define PGET_WINDOW_VALUE(hWnd, name) GetWindowLong(hWnd, GWL_##name)
#define PSET_CLASS_VALUE(hWnd, name, val) \
                                   SetClassLong(hWnd, GCL_##name, (DWORD)(val))
#define PSET_WINDOW_VALUE(hWnd,name,val) \
                                  SetWindowLong(hWnd, GWL_##name, (DWORD)(val))
#else
#define PGET_CLASS_VALUE(hWnd, name) GetClassWord(hWnd, GCW_##name)
#define PGET_WINDOW_VALUE(hWnd, name) GetWindowWord(hWnd, GWW_##name)
#define PSET_CLASS_VALUE(hWnd, name, val) \
                                    SetClassWord(hWnd, GCW_##name, (WORD)(val))
#define PSET_WINDOW_VALUE(hWnd, name, val) \
                                   SetWindowWord(hWnd, GWW_##name, (WORD)(val))
#endif


///////////////////////////////////////////////////////////////////////////////
// PInteractor

#define _PINTERACTOR_PLATFORM_INCLUDE
#include "../../interact.h"

#endif
#ifdef _PINTERACTOR_PLATFORM_INCLUDE
#undef _PINTERACTOR_PLATFORM_INCLUDE

  public:
    // New functions for class
    HWND GetHWND() const;
      // Return the MS-Windows handle. If does not exist yet, create it.

    virtual void CreateHWND();
      // Create the MS-Windows handle for the interactor.


  protected:
    PInteractor(PInteractor * parent, HWND hWnd);
      // Constructor for making PInteractors when already have an MS-Windows
      // window handle.

    void SetWndText(const PString & str,
                                  UINT setMsg = WM_SETTEXT, WPARAM wParam = 0);
      // Set the MS-Windows text via SendMessage(). Uses the message codes as
      // supplied in the parameters.

    PString GetWndText(UINT lenMsg = WM_GETTEXTLENGTH, UINT getMsg = WM_GETTEXT,
                             WPARAM wParamGet = -1, WPARAM wParamLen = 0) const;
      // Get the MS-Windows text via SendMessage(). Uses the message codes as
      // supplied in the parameters.

    void SetWndFont() const;
      // Set the windows font when it is created or changed.

    void RemoveWndFont() const;
      // Removes the windows font when it is destroyed or changed.

    void SetWndCursor() const;
      // Set the windows cursor when it is changed in this interactor.

    virtual void GetCreateWinInfo(WNDCLASS & wndClass);
      // Return the info required by CreateWindow() and RegisterClass().

    virtual void WndProc();
      // Event handler for this interactor. Translates MS-Windows messages into
      // virtual member function calls.

    virtual void DefWndProc();
      // Default MS-Windows message handler.

    virtual BOOL AdjustDimensionForScrollBar(UINT bar) const;
      // Determine if the client window dimensions must allow for a scroll bar.


    // Member variables
    HWND _hWnd;
      // MS-Windows handle

    struct _WindowsMessage {
      UINT    event;
      WPARAM  wParam;
      LPARAM  lParam;
      LRESULT lResult;
      BOOL    processed;
    } * _msg;
      // Current WndProc message parameters and return value.

    BOOL _in_WM_PAINT;
      // Prevent recursive errors by remembering if we are in WM_PAINT

    DWORD _styleBits, _exStyleBits;
      // Style that was used to create the interactor.

    HBRUSH hBackgroundBrush;
      // Background brush


  private:
    void Construct(PInteractor * par, HWND hWnd, BOOL hiddenChild);
      // Common construction code.

    BOOL HandleScrollBar(HWND scrWnd, WPARAM code, int trackVal);
    BOOL HandleCommand(NMHDR & msg);
    BOOL HandleDrawItem(const DRAWITEMSTRUCT FAR * dis);
    BOOL HandleMeasureItem(MEASUREITEMSTRUCT FAR * mis);
    BOOL HandleCompareItem(const COMPAREITEMSTRUCT FAR * cis);
    BOOL HandleDeleteItem(const DELETEITEMSTRUCT FAR * dis);
    BOOL HandleCtlColour(HWND ctlWnd, HDC hDC,
                                 const PColour & defFg, const PColour & defBk);
      // Helper functions for WndProc()


  friend class PApplication;

#endif


// End Of File ///////////////////////////////////////////////////////////////