DDXFile v1.1

For developers who use MFC this is a freeware DDX routine which subclasses an edit control to allow you to easily specify a file. When the edit control is correctly setup it will look like:

Features

• Simple DDX and DDV function which you can use in your MFC code.
• All the code is fully UNICODE compliant.
• A simple test app is included.

To use ddxfile in your project simply include ddxfile.cpp and the 6 string resources from the test application in your application. Then #include ddxfile.h in which ever of your modules requires it and make the appropriate calls. Included is a simple dialog based application which shows how to use it. Basically all you need to do is add to your DoDataExchange function as follows:

void CTestgetfileDlg::DoDataExchange(CDataExchange* pDX)

{

  CDialog::DoDataExchange(pDX);

  //{{AFX_DATA_MAP(CTestgetfileDlg)

  //}}AFX_DATA_MAP

  DDX_FilenameControl(pDX, IDC_FILE, m_ctrlGetFile, dwFlags, _T("Please specify a filename"));

}

v1.1 (17th September 1998)

• Updated all the documentation to be HTML based as with my other shareware / freeware.
• Unicode enabled all the code and provision of Unicode build configurations.
• VC 5 mak files provided now as standard
• Provision of a DDV function.
• General tidy up of the sample app including removing all the AppWizard generated comments.
• All code now compiles cleanly at warning level 4.
• Replaced all TRACE0 calls with TRACE.
• Changed name of main function from DDX_GetFileControl to DDX_FilenameControl.
• Module name has been changed from ddxgetfile to ddxfile.
• Sample app now allows read only state of widget to be toggled.
• Addition of a DDX_FileValue function.
• Change the ID's of the strings in the resource table which the code uses.

The following functions are provided:

DDX_FilenameControl
DDX_FilenameValue
DDV_FilenameControl

DDX_FilenameControl

void DDX_FilenameControl(CDataExchange* pDX, int nIDC, CGetFilenameControl& rCGetFilenameControl, DWORD dwFlags, const CString& sDialogTitle, const CString& sExtFilter);

pDX is the usual CDataExchange object which will be passed into your DoDataExchange function.

nIDC is the dialog ID of the edit control to subclass.

rCGetFilenameControl will contain upon return the window control which manages the compound edit and button controls.

sDialogTitle is the caption to use for the filename picker dialog.

Associates an existing edit control with dialog ID nIDC to a compound filename picker control. Normally you would calls to this function in your dialog class's DoDataExchange member function.

DDX_FilenameValue

void DDX_FilenameControl(CDataExchange* pDX, CGetFilenameControl& rCGetFilenameControl, CString& sFile);

rCGetFilenameControl is the folder control to get or set the filename for.

sFile is the actual file to get or set into the control depending on the direction of data exchange occuring .

DDV_FilenameControl

void DDV_FilenameControl(CDataExchange* pDX, CGetFilenameControl& rCGetFilenameControl, DWORD dwFlags);

rCGetFilenameControl is the filename control to get or set the filename for.

dwFlags is the flags to customize the bahaviour of the control.  The available flags are:

CONTACTING THE AUTHOR

PJ Naughter
Email: pjn@indigo.ie
Web: http://indigo.ie/~pjn
17th September 1998