Displaying system dialog that selects a folder -- Visual FoxPro : Using Win32 (WinAPI) Functions


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Displaying system dialog that selects a folder

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Before you begin:

Starting with VFP7 the original GETDIR function is changed to be a wrapper around the SHBrowseForFolder function.

Check a similar code published in FoxTalk November 1999 by Andrew Coates.

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4556 bytes
Created: 2003-01-02 15:38:46
Modified: 2011-02-16 07:01:05
Visits in 7 days: 189

Listed functions:

GetActiveWindow
GlobalAlloc
GlobalFree
GlobalSize
SHBrowseForFolder
SHGetPathFromIDList
SHParseDisplayName

My comment:

I use the GlobalFree function to release the allocated memory.

In Andrew Coates code this is
= CoTaskMemFree(lpIDList)
which is probably a better way.

The SHParseDisplayName translates the initial path to the pointer to an item identifier list (PIDL).

* * *
Windows Shell script:

oShell = CREATEOBJECT("Shell.Application")

oFolder = oShell.Application.BrowseForFolder(_screen.HWnd,;
"Select Folder", 1, "c:\Program Files")

IF NOT ISNULL(oFolder)
? oFolder.self.Path
ENDIF

Word Index links for this example:

name of a file to save

Save dialog box

name of a file to open

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	User Contributed Notes:




	R vd Wiel \| 2005-05-23 04:25:08


	Hi, Great function to document, I only think that the last update broke something. Function 'buf2dword' isn't defined and the call to SHBrowseForFolder gives an exception.



	A.M. \| 2005-05-23 07:25:32


	The buf2dword() added. I'll check what possibly could be wrong with the SHBrowseForFolder call.




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