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Borland C++ Question : Create Directory ComboBox

Posted on 1998-08-27
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Last Modified: 2012-05-04
How can I create a Combo Box for directory selection ?
( like what we have in open file dialog boxex )
I need only directory selection & drive selection NO file selection so I can't use common dialog of Borland C++ !
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Question by:horesht
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Accepted Solution

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alexo earned 150 total points
ID: 1171410
SHBrowseForFolder()
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Expert Comment

by:alexo
ID: 1171411
WINSHELLAPI LPITEMIDLIST WINAPI SHBrowseForFolder(LPBROWSEINFO lpbi);      

Displays a dialog box that enables the user to select a shell folder.

lpbi - Pointer to a BROWSEINFO structure that contains information used to display the dialog box.
 
Returns a pointer to an item identifier list that specifies the location of the selected folder relative to the root of the name space. If the user chooses the Cancel button in the dialog box, the return value is NULL.

The calling application is responsible for freeing the returned item identifier list using the shell's task allocator.


BROWSEINFO - Contains parameters for the the SHBrowseForFolder function and receives information about the folder selected by the user.

typedef struct _browseinfo {  
    HWND hwndOwner;          // see below
    LPCITEMIDLIST pidlRoot;  // see below
    LPSTR pszDisplayName;    // see below
    LPCSTR lpszTitle;        // see below
    UINT ulFlags;            // see below
    BFFCALLBACK lpfn;        // see below
    LPARAM lParam;           // see below
    int iImage;              // see below
} BROWSEINFO, *PBROWSEINFO, *LPBROWSEINFO;
 
hwndOwner - Handle of the owner window for the dialog box.

pidlRoot - Pointer to an item identifier list (an ITEMIDLIST structure) specifying the location of the "root" folder to browse from. Only the specified folder and its subfolders appear in the dialog box. This member can be NULL, and in that case, the name space root (the desktop folder) is used.

pszDisplayName - Pointer to a buffer that receives the display name of the folder selected by the user. The size of this buffer is assumed to be MAX_PATH bytes.
lpszTitle - Pointer to a null-terminated string that is displayed above the tree view control in the dialog box. This string can be used to specify instructions to the user.

ulFlags - Value specifying the types of folders to be listed in the dialog box as well as other options. This member can include zero or more of the following values:
BIF_BROWSEFORCOMPUTER: Only returns computers. If the user selects anything other than a computer, the OK button is grayed.
BIF_BROWSEFORPRINTER: Only returns printers. If the user selects anything other than a printer, the OK button is grayed.
BIF_DONTGOBELOWDOMAIN: Does not include network folders below the domain level in the tree view control.
BIF_RETURNFSANCESTORS: Only returns file system ancestors. If the user selects anything other than a file system ancestor, the OK button is grayed.
BIF_RETURNONLYFSDIRS: Only returns file system directories. If the user selects folders that are not part of the file system, the OK button is grayed.
BIF_STATUSTEXT: Includes a status area in the dialog box. The callback function can set the status text by sending messages to the dialog box.
 
lpfn - Address an application-defined function that the dialog box calls when events occur. For more information, see the description of the BrowseCallbackProc function. This member can be NULL.

lParam - Application-defined value that the dialog box passes to the callback function (if one is specified).

iImage - Variable that receives the image associated with the selected folder. The image is specified as an index to the system image list.
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Author Comment

by:horesht
ID: 1171412
Is the above will work with OWL ?
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LVL 11

Expert Comment

by:alexo
ID: 1171413
This is straight Win32 API.  I believe it will work with anything.
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Author Comment

by:horesht
ID: 1171414
The Borland C++ donen't recognize this function & it's data
types ( although he recognize other API procedures )
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Expert Comment

by:alexo
ID: 1171415
#include <shlobj.h>
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Author Comment

by:horesht
ID: 1171416
Thanks but I already done it .
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