File-boxes in MFC

Wouldn't it be nice to have drive, dir and file-boxes, as in VisualBasic, in MFC. This project give you just that possibility. To use these list-boxes in your project include FileList.h and FileList.cpp in your project and add the following code:

class CLBFileDlg : public CDialog
{
    ...
public:
    // Dialog Data
    
//{{AFX_VIRTUAL(CLBFileDlg)	
protected:
    ...	
    virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);	
    ...
    //}}AFX_VIRTUAL
private:	
    ...
    //the three boxes in this example
    CFileList m_cflDrive;
	CFileList m_cflDir;	
    CFileList m_cflFile;
    //user-defined message for communication between the boxes
    //and dialog (msg is trapped in WindowProc)
    UINT m_nBoxMsg;	
    ...
};
							
BOOL CLBFileDlg::OnInitDialog()
{
    ...	
    // TODO: Add extra initialization here	
    //register a personal, user-defined msg so that our boxes can post msg's for	
    //interaction	
    m_nBoxMsg=RegisterWindowMessage("Tom's little box");	

    //init the  boxes	

    //the definition of:	
    //BOOL InitBox(UINT res_from_template, 	
    //	       CWnd *parent, 	
    //	       LPSTR lpszPath, 	
    //	       LPSTR lpszFileMask, 	
    //	       UINT flags, 	
    //	       UINT msg);	

    m_cflDrive.InitBox(IDC_LIST_DRIVE, this, "c:\\", "*.*", DRIVES, m_nBoxMsg);	
    m_cflDir.InitBox(IDC_LIST_DIR, this, "c:\\", "*.*", DIRECTORIES, m_nBoxMsg);	
    m_cflFile.InitBox(IDC_LIST_FILE, this, "c:\\", "*.*", FILES, m_nBoxMsg);	

    //in this example we'll just display the selected file in a CStatic	
    m_clsSelection.InitSelect(IDC_SELECT, this);
    ...
}

LRESULT CLBFileDlg::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) 
{
    // TODO: Add your specialized code here and/or call the base class
    ...	
        //process the user-defined msg	
        if(message==m_nBoxMsg)
        {	
            CString temp_string;
            
            //update the dir-box and file-box if we change drive
            if(wParam==DRIVES)		
            {		
                m_cflDir.RefreshBox(m_cflDrive.getPath());
                m_cflFile.RefreshBox(m_cflDrive.getPath());	
            }	
            
            //update the file-box if we change directory
            else if(wParam==DIRECTORIES)		
            {		
                m_cflFile.RefreshBox(m_cflDir.getPath());
            }
            
            //for simplicity we'll just show the selected file	
            //in the CStatic	
            else if(wParam==FILES)	
            {		
                m_cflFile.GetText(m_cflFile.GetCurSel(), temp_string);	
                m_clsSelection.SetWindowText(temp_string);	
            }
        }
        ...	
        return CDialog::WindowProc(message, wParam, lParam);
}

Minor update:

Changes since v. 1.0
  • improving update in FillBox(): no update untill the box is filled
  • much faster draw
  • declaring CheckEntry as inline and changing the argument
  • moving FillBox over to private-sector
  • improving OnDblclk():
    if you use the dir-box a lot then the path may look like this
    c:\inn\pics\..\html\..\..\windows\system\..\..\det.log
    this a right and proper path but of course this one can
    be much slimmer, like this:
    c:\det.log

As far as I can see, all the updates are internal to FileList and does not invalidate usage of this class. However since the header has had an update, a recompile of the project is required.

Download demo project - 20 KB



Comments

  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Available On-Demand Today's changing workforce dynamics, economic challenges, and technological advances are placing immense pressure on business leaders to turn their focus on people – their most valuable asset – in order to remain competitive. Research shows that a significant number of new employees quit within one year of taking a new job*. Whether it's through a merger and acquisition, or standard hiring process, like any first impression, early experiences shape their opinions of their new …

  • Agile development principles have gone from something used only by cutting-edge teams to a mainstream approach used by teams large and small. If you're not using agile methods already though, or if you've only been exposed to agile on small projects here and there, you may wonder if agile can ever work in your environment. Read this eBook to learn the fundamentals of agile and how to increase the productivity of your software teams while enabling them to produce higher-quality solutions that better fulfill …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds