ddxfolder.cpp

视频芯片管理系统

/*
Module : DDXFOLDER.CPP
Purpose: implementation for a MFC DDX_ routine to get a directory/folder
         Using the file open/save as common dialogs or the newer Shell API
         SHBrowseForFolder

Created: PJN / 26-03-1997
History: PJN / 16-07-1997  Added support for setting the initial directory when using SHBrowseForFolder
         PJN / 26-11-1997  Update to allow the folder selection dialogs to be used withou the DDX stuff
         PJN / 16-09-1998  1. Updated all the documentation to be HTML based as with my other shareware / freeware.
                           2. Unicode enabled all the code and provision of Unicode build configurations.
                           3. VC 5 mak files provided now as standard
                           4. Option to have non read only edit control.
                           5. Provision of a DDV function
                           6. General tidy up of the sample app including removing all the AppWizard
                              generated comments. 
                           7. All code now compiles cleanly at warning level 4
                           8. Replaced all TRACE0 calls with TRACE
                           9. Changed name of main function from DDX_GetFolder to DDX_FolderControl
                           10. Module name has been changed from ddxgetfolder to ddxfolder.
                           11. Sample app now allows read only state of widget to be toggled
                           13. Addition of a DDX_FolderValue function
                           14. Change the ID's of the strings in the resource table which the code uses
         PJN / 17-09-1998  1. Minor update to some comments and the documentation


Copyright (c) 1997 - 1998 by PJ Naughter.  
All rights reserved.

*/

/////////////////////////////////  Includes  //////////////////////////////////
#include "stdafx.h"
#include "..\\DogMgt.h"
#include "ddxfolder.h"
#include "choosedirdlg.h"
//#include "DICOM.h"
//#include "MainFrm.h"

///////////////////////////////// defines /////////////////////////////////////

#define GETFOLDER_EDIT_ID 100

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif




///////////////////////////////// Implementation //////////////////////////////

BEGIN_MESSAGE_MAP(CModifyButton, CButton)
  //{{AFX_MSG_MAP(CModifyButton)
  ON_CONTROL_REFLECT(BN_CLICKED, OnClicked)
  //}}AFX_MSG_MAP
END_MESSAGE_MAP()
        
CModifyButton::CModifyButton()
{
  m_pBuddy = NULL;
  m_bFirstCall = TRUE;
}

void CModifyButton::SetBuddy(CGetFolderControl* pBuddy)
{
  m_pBuddy = pBuddy;
}

BOOL CModifyButton::PreTranslateMessage(MSG* pMsg) 
{                     
  //create the tooltip
  if (m_bFirstCall)
  {
    m_ToolTip.Create(this);
    m_ToolTip.Activate(TRUE);
//    m_ToolTip.AddTool(this, IDS_DDXFOLDER_TT_MODIFY);
    m_bFirstCall = FALSE;
  }
  
  //give the tooltip a chance to handle the message
  m_ToolTip.RelayEvent(pMsg);

  return CButton::PreTranslateMessage(pMsg);
}

void CModifyButton::OnClicked() 
{
  if (m_pBuddy)
    m_pBuddy->Edit();
  else
    TRACE(_T("CModifyButton: No auto buddy defined\n"));
}                        



BEGIN_MESSAGE_MAP(CGetFolderControl, CEdit)
  //{{AFX_MSG_MAP(CGetFolderControl)
  //}}AFX_MSG_MAP
END_MESSAGE_MAP()

CGetFolderControl::CGetFolderControl()
{
}

BOOL CGetFolderControl::SubclassEdit(HWND hEdit)
{   
  //test our inputs
  ASSERT(this);
  if (!IsWindow(hEdit))
  {
    ASSERT(FALSE);
    TRACE(_T("CGetFolderControl::SubclassEdit -- window handle is invalid!\n"));
    return FALSE;
  }                
  
  //subclass the control
  if (SubclassWindow(hEdit))
    return AddEditButton();
  else
  {
    TRACE(_T("CGetFolderControl::SubclassEdit -- Could not subclass edit control!\n"));
    ASSERT(FALSE);
    return FALSE;
  }
}

BOOL CGetFolderControl::AddEditButton()
{
	return true;
}

void CGetFolderControl::Edit()
{
	CChooseDirDlg dlg;
	m_sPath.Format("%s", "c:\\");
	if (!dlg.GetDirectory(m_sPath, this, (m_dwFlags & GFLDR_OLD_STYLE_DIALOG), m_sDialogTitle)){
		m_sPath.Empty();
	}
}

CString CGetFolderControl::GetFolder() const
{
	return m_sPath;
}

void CGetFolderControl::SetFolder(const CString& sFolder)
{
  CString sText(sFolder);

  //Remove any trailing slashes if there is any
  if (!sText.IsEmpty())
  {
    int nLength = sText.GetLength();
    if (sText[nLength-1] == _T('\\'))
      sText = sText.Left(nLength - 1);
  }

  SetWindowText(sText);
}



void DDX_FolderControl(CDataExchange* pDX, int nIDC, CGetFolderControl& rCGetFolderControl, DWORD dwFlags, const CString& sDialogTitle)
{
  HWND hWndCtrl = pDX->PrepareEditCtrl(nIDC);
  if (!pDX->m_bSaveAndValidate && rCGetFolderControl.m_hWnd == NULL)    // not subclassed yet
  {
    if (!rCGetFolderControl.SubclassEdit(hWndCtrl))
    {
      ASSERT(FALSE);      // possibly trying to subclass twice ?
      AfxThrowNotSupportedException();
    }
  }
  rCGetFolderControl.SetFlags(dwFlags);
  rCGetFolderControl.SetDialogTitle(sDialogTitle);
}



void DDX_FolderValue(CDataExchange* pDX, CGetFolderControl& rCGetFolderControl, CString& sFolder)
{
  if (pDX->m_bSaveAndValidate)
    sFolder = rCGetFolderControl.GetFolder(); 
  else
    rCGetFolderControl.SetFolder(sFolder);     
}



void DDV_FolderControl(CDataExchange* pDX, CGetFolderControl& rCGetFolderControl, DWORD dwFlags)
{
	if (dwFlags & GFLDR_FOLDER_MUST_EXIST)
  {
    BOOL bFolderExists = FALSE;
    CString sFolder = rCGetFolderControl.GetFolder();

    //Check to see if the folder exists
    DWORD dwAttributes = GetFileAttributes(sFolder);
    if (dwAttributes != 0xFFFFFFFF)
      bFolderExists = ((dwAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0);

   	if (!pDX->m_bSaveAndValidate && !bFolderExists)
	  {
		  TRACE0("Warning: initial dialog data contains a non - existant folder.\n");
		  return;     // don't stop now
    }

    if (pDX->m_bSaveAndValidate && !bFolderExists)
    {
	    //AfxMessageBox(IDS_DDXFOLDER_REQUIRE_VALID_FOLDER);
		pDX->PrepareEditCtrl(rCGetFolderControl.GetDlgCtrlID());
	    pDX->Fail();
    }
  }
}