optspntr.cpp

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// $Id: optspntr.cpp 1282 2006-06-09 09:46:49Z alex $
/* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE
================================XARAHEADERSTART===========================
 
               Xara LX, a vector drawing and manipulation program.
                    Copyright (C) 1993-2006 Xara Group Ltd.
       Copyright on certain contributions may be held in joint with their
              respective authors. See AUTHORS file for details.

LICENSE TO USE AND MODIFY SOFTWARE
----------------------------------

This file is part of Xara LX.

Xara LX is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License version 2 as published
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Franklin St, Fifth Floor, Boston, MA  02110-1301 USA


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-----------------

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The additional rights are to use, modify, and distribute the software
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----------------

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      Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK.
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=================================XARAHEADEREND============================
 */
// Implementation of the Pointers tab of the options dialog box

/*

*/

#include "camtypes.h"

// WEBSTER-ranbirr-13/11/96
#ifndef WEBSTER

#include "appprefs.h"
//#include "prefsdlg.h" // dialog/gadget ids
//#include "optsres.h"  // error strings
#include "optspntr.h"
//#include "app.h"      // Camelot object - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "units.h"        // units - in camtypes.h [AUTOMATICALLY REMOVED]
//#include "binds.h"        // ButtonFunction - in camtypes.h [AUTOMATICALLY REMOVED]

CC_IMPLEMENT_DYNAMIC(PointersTab, OptionsTabs)   

// This is not compulsory, but you may as well put it in so that the correct version
// of your file can be registered in the .exe
DECLARE_SOURCE("$Revision: 1282 $");

              
/********************************************************************************************

>   PointersTab::PointersTab() 


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    PointersTab constructor. Creates a non-undoable operation
    Errors:     -
    SeeAlso:    -

********************************************************************************************/

PointersTab::PointersTab()
{   
    // Do nothing at present
}        

/********************************************************************************************

>   PointersTab::~PointersTab()


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    PointersTab destructor
    Errors:     -
    SeeAlso:    -

********************************************************************************************/
                                                                                
PointersTab::~PointersTab()
{   
}        

/********************************************************************************************

>   BOOL PointersTab::Init()


    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    True if initialised ok, False if failed.
    Purpose:    PointersTab initialisation routine
    Errors:     -
    SeeAlso:    -

********************************************************************************************/
                                                                                
BOOL PointersTab::Init()
{   
    return TRUE;
}        


/******************************************************************************************

>   CDlgResID PointersTab::GetPageID()()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    The dialog ID of this tab section.    
    Purpose:    Allows the options dialog code to determine the dialog ID of this section.
    Errors:     -
    SeeAlso:    -

******************************************************************************************/

CDlgResID PointersTab::GetPageID()
{
    return _R(IDD_OPTSTAB_POINTERS);
}

/******************************************************************************************

>   BOOL PointersTab::IsDocumentOption()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    Returns True if this tab is a document option.    
    Purpose:    Allows the document options dialog code to determine if this tab belongs
                to the group of document options.
    Errors:     -
    SeeAlso:    IsProgramOption();

******************************************************************************************/

BOOL PointersTab::IsDocumentOption()
{
    return FALSE;   // This tab is not a document option 
}

/******************************************************************************************

>   BOOL PointersTab::IsProgramOption()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    Returns True if this tab is a program option.     
    Purpose:    Allows the program options dialog code to determine if this tab belongs
                to the group of program options.
    Errors:     -
    SeeAlso:    IsProgramOption();

******************************************************************************************/

BOOL PointersTab::IsProgramOption()
{
    return TRUE;    // This tab is a program option 
}


/******************************************************************************************

>   BOOL PointersTab::CommitSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    True if values in dialog box ok, False otherwise.     
    Purpose:    Takes the values in the Pointers section tab of the options dialog box and
                sets the associated preference values accordingly
                Called when ok is pressed on the dialog box.
                Middle button removed for now as nothing seems to use it.
    Errors:     -
    SeeAlso:    -

******************************************************************************************/

BOOL PointersTab::CommitSection()
{
TRACEUSER( "Neville", _T("commit PointersTab section\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::CommitSection called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_POINTERS));  // The pointers page identifier
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Section = Pointers

    // Ok has been pressed so take the values from this section of the dialog box
    BOOL Valid=FALSE;       // Flag for validity of value
//  BOOL State=FALSE;       // Flag for state of button/switch
    BOOL SetOk=TRUE;        // Preference value set ok

    // Middle button removed for now as nothing seems to use it.

    // 0, 1 or 2 indicating Left Middle or Right mouse button
    ButtonFunction LeftButton = (ButtonFunction)pPrefsDlg->GetSelectedValueIndex(_R(IDC_OPTS_LEFTBUTTON));
//  ButtonFunction MiddleButton = (ButtonFunction)pPrefsDlg->GetSelectedValueIndex(_R(IDC_OPTS_MIDDLEBUTTON));
    ButtonFunction RightButton = (ButtonFunction)pPrefsDlg->GetSelectedValueIndex(_R(IDC_OPTS_RIGHTBUTTON));
    ClickModifiers::SetButtonFunc(0, LeftButton);
//  ClickModifiers::SetButtonFunc(1, MiddleButton);
    ClickModifiers::SetButtonFunc(2, RightButton);

    // All units work off the selected document and so we must do nothing if there is no
    // selected document. Check our clas variable to see if this is true or not.
    // Units should have been set up by the caller.
    if (pDocument == NULL || pSpread == NULL)
        return (TRUE);

    // Now the magnetic radii
    INT32 LineRadius = 0;                   
    INT32 PointRadius = 0;                  
    LineRadius = pPrefsDlg->GetUnitGadgetValue(_R(IDC_OPTS_LINERADIUS), CurrentPageUnits,
                                             0, INT_MAX, _R(IDE_OPTS_INVALIDLINERAD), &Valid);
TRACEUSER( "Neville", _T("commit LineRadius distance='%d' Valid ='%d'\n"),LineRadius, Valid);
    if (Valid)
    {
        SetOk = Camelot.SetPrefValue(TEXT("Magnetic Options"), TEXT("Line Radius"), &LineRadius);
        ERROR2IF(!SetOk,2,_R(IDE_OPTS_SETPREF_EDIT));
    }
    else
        return FALSE;           // Magnetic line radius incorrect, user has been warned already

    PointRadius = pPrefsDlg->GetUnitGadgetValue(_R(IDC_OPTS_POINTRADIUS), CurrentPageUnits,
                                             0, INT_MAX, _R(IDE_OPTS_INVALIDPOINTRAD), &Valid);
TRACEUSER( "Neville", _T("commit PointRadius distance='%d' Valid ='%d'\n"),PointRadius, Valid);
    if (Valid)
    {
        SetOk = Camelot.SetPrefValue(TEXT("Magnetic Options"), TEXT("Point Radius"), &PointRadius);
        ERROR2IF(!SetOk,2,_R(IDE_OPTS_SETPREF_EDIT));
    }
    else
        return FALSE;           // Magnetic point radius incorrect, user has been warned already


    return TRUE;
}

/******************************************************************************************

>   BOOL PointersTab::NewUnitsInSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    True if values in dialog box ok, False otherwise.     
    Purpose:    Function called when new default units come into operation. We must convert
                all units fields to display in the newly specified units.
    Errors:     -
    SeeAlso:    -

******************************************************************************************/

BOOL PointersTab::NewUnitsInSection()
{
TRACEUSER( "Neville", _T("New units in edit section\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::NewUnitsInSection called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_POINTERS));  // The edit page identifier
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Set up the common variables
//  BOOL Valid=FALSE;       // Flag for validity of value

    // We will not error on any of the conversions as this might mean double errors
    // when say an apply is used but instead just ignore the conversion. This also means
    // not specifying an error message in the GetUnitGadgetValue calls.

    // Call the normal code which inits the magnetic radii section
    InitMagneticRadii();

    return TRUE;
}

#if 0
    // All units work off the selected document and so we must do nothing if there is no
    // selected document. Check our clas variable to see if this is true or not.
    // Units should have been set up by the caller.
    if (pDocument == NULL || pSpread == NULL)
        return (TRUE);

    // Now the magnetic radii
    INT32 LineRadius = 0;                   
    INT32 PointRadius = 0;                  
    LineRadius = pPrefsDlg->GetUnitGadgetValue(_R(IDC_OPTS_LINERADIUS), CurrentPageUnits,
                                             0, INT_MAX, NULL, &Valid);
    if (Valid)
    {
        ok = pPrefsDlg->SetUnitGadgetValue(_R(IDC_OPTS_LINERADIUS), CurrentPageUnits, LineRadius, FALSE, -1);
    }

    PointRadius = pPrefsDlg->GetUnitGadgetValue(_R(IDC_OPTS_POINTRADIUS), CurrentPageUnits,
                                             0, INT_MAX, NULL, &Valid);
    if (Valid)
    {
        ok = pPrefsDlg->SetUnitGadgetValue(_R(IDC_OPTS_POINTRADIUS), CurrentPageUnits, PointRadius, FALSE, -1);
    }

    return TRUE;
}
#endif

/********************************************************************************************

>   BOOL PointersTab::GreySection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called when the user has closed all documents 
    Errors:     -
    SeeAlso:    PointersTab::UngreySection;

********************************************************************************************/

BOOL PointersTab::GreySection()
{
TRACEUSER( "Neville", _T("GreySection in PointersTab section\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::GreySection called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_POINTERS));  // The PointersTab identifier
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Only update if we are not already grey 
    if (GreyStatus == TRUE)
        return TRUE;

    // Call our central greying/ungreying function
    ok = ChangeControlStatus(FALSE);
    
    GreyStatus = TRUE;

    return ok;
} 

/********************************************************************************************

>   BOOL PointersTab::UngreySection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called when the user has selected a new document 
    Errors:     -
    SeeAlso:    PointersTab::UngreySection;

********************************************************************************************/

BOOL PointersTab::UngreySection()
{
TRACEUSER( "Neville", _T("UngreySection in PointersTab section\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::UngreySection called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_POINTERS));  // The PointersTab identifier
    if (!ok)
        return TRUE;    // Talk to page failed to return now

    // Only update if we are not already ungrey 
    if (GreyStatus == FALSE)
        return TRUE;

    // Call our central greying/ungreying function
    ok = ChangeControlStatus(TRUE);
    
    GreyStatus = FALSE;

    return ok;
}

/********************************************************************************************

>   BOOL PointersTab::ChangeControlStatus(const BOOL Status)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Called to grey/ungrey all controls on this tab. 
    Errors:     -
    SeeAlso:    PointersTab::GreySection;   PointersTab::UngreySection;

********************************************************************************************/

BOOL PointersTab::ChangeControlStatus(const BOOL Status)
{
    // Grey/ungrey the controls
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_INFO), Status);

//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_BUTTONGRP), Status);
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_LEFTBUTTON), Status);
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_MIDDLEBUTTON), Status);
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_RIGHTBUTTON), Status);
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_LEFTTXT), Status);
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_MIDDLETXT), Status);
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_RIGHTTXT), Status);
//
//  pPrefsDlg->EnableGadget(_R(IDC_OPTS_RESET), Status);
    
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAGNETICGROUP), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_POINTRADIUSTXT), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_LINERADIUSTXT), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_POINTRADIUS), Status);
    pPrefsDlg->EnableGadget(_R(IDC_OPTS_LINERADIUS), Status);

    return TRUE;
}           

/********************************************************************************************

>   BOOL PointersTab::UpdateSection(String_256 *DocumentName)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     Name of document
    Outputs:    -
    Returns:    -
    Purpose:    Called when we have switched to a new document and need to update all the 
                controls on this tab. Should only init the tab if the page is present.  
                The document name allows the info field on the tab to be filled in correctly.
    Errors:     -
    SeeAlso:    PointersTab::GreySection; PointersTab::UngreySection; PointersTab::InitSection;

********************************************************************************************/

BOOL PointersTab::UpdateSection(String_256 *DocumentName)
{
TRACEUSER( "Neville", _T("PointersTab::UpdateSection\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::UpdateSection called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_POINTERS));  // The PointersTab identifier
    if (!ok)
        return TRUE;        // page not present

    // Remove any lists that we have created.
    //pPrefsDlg->DeleteAllValues(_R(IDC_OPTS_SIZELIST));

    // Call the normal init section code
    // but only need to update the magnetic radii section so do this instead
    // Stops excesive updates of the pull down lists.
    InitMagneticRadii();

    return TRUE;
}


/********************************************************************************************

>   BOOL PointersTab::HandleMsg(DialogMsg* Msg)

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    -
    Purpose:    Handles all the Edit options tabs messages 
    Errors:     -
    SeeAlso:    -

********************************************************************************************/

BOOL PointersTab::HandleMsg(DialogMsg* Msg)
{
TRACEUSER( "Neville", _T("PointersTab::HandleMsg\n"));
    ERROR2IF(Msg == NULL,FALSE,"PointersTab::Message null message received");
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::HandleMsg called with no dialog pointer");

    BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_POINTERS));  // The edit page identifier
    if (!ok)
        return TRUE;        // no page present = handled message
    
    switch(Msg->DlgMsg)
    {
        case DIM_CREATE:    // Initialise controls
            GreyStatus = FALSE; // we are ungreyed by default
            ok = InitSection();
            if (!ok)
                InformError();
            break;
        case DIM_LFT_BN_CLICKED:
            OptionsTabs::SetApplyNowState(TRUE);
            // A control on the dialog box has been clicked...
            if (Msg->GadgetID == _R(IDC_OPTS_RESET))
            {
                // Somebody has pressed the reset defaults button
                // Go and call the nice function which resets the values and then
                // update our values again.
                ClickModifiers::RestoreDefaults();
                InitClickLists();
            }
            break;
        case DIM_SELECTION_CHANGED:
        case DIM_TEXT_CHANGED:
            OptionsTabs::SetApplyNowState(TRUE);
            break;
        default:
            break;
    }
    return TRUE;
}  


/******************************************************************************************

>   BOOL PointersTab::InitSection()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if successful, else FALSE
    Purpose:    Sets initial values for the Pointers section of the options dialog box.
                This section includes the:-
                 - magnetic snap distances
                 - click modifier lists
    Errors:     -
    SeeAlso:    AppPrefsDlg; OptionsTabs;

******************************************************************************************/

BOOL PointersTab::InitSection()
{
TRACEUSER( "Neville", _T("PointersTab::InitSection\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::InitSection called with no dialog pointer");

//  BOOL ReadOk = FALSE;    // Flag to say whether the preference value was read ok 
    BOOL ok = TRUE;         // Flag for whether value set up ok 

    // Set up the click lists for the left, right and middle mouse buttons
    ok = InitClickLists();
    
    // Now set up the magnetic radii section 
    ok = InitMagneticRadii();

    return TRUE;
}

/******************************************************************************************

>   BOOL PointersTab::InitClickLists()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    14/3/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if successful, else FALSE
    Purpose:    Sets initial values for the click modifier lists in the Pointers section
                of the options dialog box.
                Middle button removed for now as nothing seems to use it.
    Errors:     -
    SeeAlso:    AppPrefsDlg; OptionsTabs;

******************************************************************************************/

BOOL PointersTab::InitClickLists()
{
TRACEUSER( "Neville", _T("InitClickLists\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::InitClickLists called with no dialog pointer");

    BOOL ok = TRUE;         // Flag for whether value set up ok 

    // Middle button removed for now as nothing seems to use it.

    // Make sure that the lists are empty
    pPrefsDlg->DeleteAllValues(_R(IDC_OPTS_LEFTBUTTON));
//  pPrefsDlg->DeleteAllValues(_R(IDC_OPTS_MIDDLEBUTTON));
    pPrefsDlg->DeleteAllValues(_R(IDC_OPTS_RIGHTBUTTON));

    // 0, 1 or 2 indicating Left Middle or Right mouse button
    ButtonFunction LeftButton = ClickModifiers::GetButtonFunc(0);
//  ButtonFunction MiddleButton = ClickModifiers::GetButtonFunc(1);
    ButtonFunction RightButton = ClickModifiers::GetButtonFunc(2);

    // Safety checks on the current button function values
    if (LeftButton < (ButtonFunction)0 || LeftButton >= BUTTFUNC_LAST)
       LeftButton = BUTTFUNC_NORMAL;
//  if (MiddleButton < (ButtonFunction)0 || MiddleButton >= BUTTFUNC_LAST)
//     MiddleButton = BUTTFUNC_ZOOMIN;
    if (RightButton < (ButtonFunction)0 || RightButton >= BUTTFUNC_LAST)
       RightButton = BUTTFUNC_MENU;

    String_32 FunctionName;
    ButtonFunction bf = (ButtonFunction)0; // BUTTFUNC_NORMAL; 
    for (INT32 i = (INT32)bf ; i < (INT32)BUTTFUNC_LAST; i++)
    {
        bf = (ButtonFunction)i;
        ClickModifiers::GetButtonFuncName(bf, &FunctionName);
        pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_LEFTBUTTON), FunctionName);
//      pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_MIDDLEBUTTON), FunctionName);
        pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_RIGHTBUTTON), FunctionName);
    }
    // Set the length of the list
    pPrefsDlg->SetComboListLength(_R(IDC_OPTS_LEFTBUTTON));
//  pPrefsDlg->SetComboListLength(_R(IDC_OPTS_MIDDLEBUTTON));
    pPrefsDlg->SetComboListLength(_R(IDC_OPTS_RIGHTBUTTON));

    // Set up the default option displayed
    ok = pPrefsDlg->SetSelectedValueIndex(_R(IDC_OPTS_LEFTBUTTON), (INT32)LeftButton);
//  ok = pPrefsDlg->SetSelectedValueIndex(_R(IDC_OPTS_MIDDLEBUTTON), (INT32)MiddleButton);
    ok = pPrefsDlg->SetSelectedValueIndex(_R(IDC_OPTS_RIGHTBUTTON), (INT32)RightButton);

    return TRUE;
}   

/******************************************************************************************

>   BOOL PointersTab::InitMagneticRadii()

    Author:     Neville_Humphrys (Xara Group Ltd) <camelotdev@xara.com>
    Created:    24/3/95
    Inputs:     -
    Outputs:    -
    Returns:    TRUE if successful, else FALSE
    Purpose:    Sets initial values for the the magnetic radii fields in the Pointers section
                of the options dialog box.
    Errors:     -
    SeeAlso:    AppPrefsDlg; OptionsTabs;

******************************************************************************************/

BOOL PointersTab::InitMagneticRadii()
{
TRACEUSER( "Neville", _T("InitMagneticRadii\n"));
    ERROR2IF(pPrefsDlg == NULL,FALSE,"PointersTab::InitMagneticRadii() called with no dialog pointer");
    // All units work off the selected document and so we must do nothing if there is no
    // selected document. Check our clas variable to see if this is true or not.
    // Units should have been set up by the caller.
    if (pDocument == NULL || pSpread == NULL)
    {
        // If this fails then there is no document and so we must ensure
        // things which need a selected document are greyed.
        GreySection();
        return (TRUE);
    }

    // General flags
    BOOL ok = TRUE;          
    BOOL ReadOk = TRUE;

    // Now the magnetic radii
    // These should just be shown in distance measurements rather than scaled distance
    // measurements as they define distance on screen rather than on the page. 
    INT32 LineRadius = 0;                   
    INT32 PointRadius = 0;                  
    ReadOk = Camelot.GetPrefValue(TEXT("Magnetic Options"), TEXT("Line Radius"), &LineRadius);
    ok = pPrefsDlg->SetUnitGadgetValue(_R(IDC_OPTS_LINERADIUS), CurrentPageUnits, LineRadius, FALSE, -1);
    ERROR2IF(!ReadOk,FALSE,_R(IDE_OPTS_READPREF_EDIT));

    ReadOk = Camelot.GetPrefValue(TEXT("Magnetic Options"), TEXT("Point Radius"), &PointRadius);
    ok = pPrefsDlg->SetUnitGadgetValue(_R(IDC_OPTS_POINTRADIUS), CurrentPageUnits, PointRadius, FALSE, -1);
    ERROR2IF(!ReadOk,FALSE,_R(IDE_OPTS_READPREF_EDIT));

    return TRUE;
}   

#endif //webster

---