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

  • Live Event Date: November 20, 2014 @ 2:00 p.m. ET / 11:00 a.m. PT Are you wanting to target two or more platforms such as iOS, Android, and/or Windows? You are not alone. 90% of enterprises today are targeting two or more platforms. Attend this eSeminar to discover how mobile app developers can rely on one IDE to create applications across platforms and approaches (web, native, and/or hybrid), saving time, money, and effort and introducing apps to market faster. You'll learn the trade-offs for gaining long …

  • Protecting business operations means shifting the priorities around availability from disaster recovery to business continuity. Enterprises are shifting their focus from recovery from a disaster to preventing the disaster in the first place. With this change in mindset, disaster recovery is no longer the first line of defense; the organizations with a smarter business continuity practice are less impacted when disasters strike. This SmartSelect will provide insight to help guide your enterprise toward better …

Most Popular Programming Stories

More for Developers

Latest Developer Headlines

RSS Feeds