provides an MFC class which provides a tree control similar to
the left hand side of Windows Explorer. Also provided is
. This is a class derived from the MFC
template class
. It provides for ordered insertion of items into an
MFC
aswell as searching and sorting of its items. The compare function
used to determine ordering in the array can be easily customised at run-time.
- CSortedArray::CSortedArray
- CSortedArray();
Remarks:
Constructs an empty array. Internally this just sets compare function pointer to NULL to ensure that
you call SetCompareFunction() prior to calling any methods of CSortedArray.
- CSortedArray::OrderedInsert
- int OrderedInsert(ARG_TYPE newElement, int nCount = 1);
Return Value:
The index where the item has been inserted.
Parameters:
- newElement -- The item to add to the array. Its type is determined when the class is
instantiated as with the parent class CArray.
- nCount -- The number of times this element should be inserted (defaults to 1).
Remarks:
Inserts the element into the array. The code internally uses a binary search to determine where the
item should be inserted. This assumes that the elements in the array are already ordered. If they are
not then you should call the Sort method first. Because the class is publically derived from CArray,
you can call all of CArray's methods in addition to the methods implemented in CSortedArray.
- CSortedArray::Sort
- void Sort(int nLowIndex = 0, int nHighIndex = -1);
Return Value:
The index where the item has been inserted.
Parameters:
- nLowIndex -- The index of the first element in the array to sort.
- nHighIndex -- The index of the last element in the array to sort. The default value of -1
represents the last element in the array.
Remarks:
Performs a sort of the specified elements in the array. Internally the code will use the "Quicksort"
algorithm to do the sort.
- CSortedArray::Find
- int Find(ARG_TYPE element, int nLowIndex = 0, int nHighLowIndex = -1);
Return Value:
The index of the item if found otherwise -1 if not.
Parameters:
- element -- The item to search for in the array.
- nLowIndex -- The index of the first element in the array to search.
- nHighIndex -- The index of the last element in the array to search. The default value of -1
represents the last element in the array.
Remarks:
Searches for an item in the array. The code internally uses a binary search to determine if the
element is present or not.
- CSortedArray::SetCompareFunction
- void SetCompareFunction(LPCOMPARE_FUNCTION lpfnCompareFunction);
Parameters:
- lpfnCompareFunction -- The new function to use for comparisons to determine the ordering of
elements in the array.
Remarks:
This sets the function which is used internally for item comparisons. LPCOMPARE_FUNCTION is a pointer
to a function as defined:
typedef int COMPARE_FUNCTION(ARG_TYPE element1, ARG_TYPE element2);<br>
typedef COMPARE_FUNCTION* LPCOMPARE_FUNCTION;
- CSortedArray::GetCompareFunction
- LPCOMPAREFUNCTION GetCompareFunction() const;
Return Value:
A pointer to the function which is currently used to determine the ordering of elements in the array.
Remarks:
This is the corollary function to the SetCompareFunction().
- CTreeFileCtrl::CTreeFileCtrl
- CTreeFileCtrl();
Remarks:
Constructs a CTreeFileCtrl object.
- CTreeFileCtrl::SetRootFolder
- void SetRootFolder(const CString& sPath);
Parameters:
- sPath -- The folder to use as the parent for all items in the tree control.
Remarks:
This allows you to set the parent folder to be something other than the default which displays all the
drive letters at the root. For example this would allow you to produce a UI to allow you to specify a
"Program Group" as would be required by an install program.
- CTreeFileCtrl::GetRootFolder
- CString GetRootFolder() const;
Return Value:
The current folder used as the parent for all items in the tree control.
Remarks:
This is the corollary function to the SetRootFolder().
- CTreeFileCtrl::ItemToPath
- CString ItemToPath(HTREEITEM hItem);
Return Value:
The folder / file path as represented by the tree item hItem.
Parameters:
- hItem -- The tree item to get the path for.
Remarks:
This function allows an tree item's file name or folder name to be retrieved given it's HTREEITEM.
Internally this function is used in the GetSelectedPath() function.
- CTreeFileCtrl::GetSelectedPath
- CString GetSelectedPath();
Return Value:
The current folder / file path as selected in the tree control.
Remarks:
This function returns the file name or folder name currently selected in the tree control.
- CTreeFileCtrl::SetSelectedPath
- void SetSelectedPath(const CString& sPath, BOOL bExpanded = FALSE);
Return Value:
The folder / file path as represented by the tree item hItem.
Parameters:
- sPath -- The folder or file name path to select in the tree control.
- bExpanded -- TRUE if the new item should be shown expanded otherwise FALSE.
Remarks:
This allows you to set the currently selected item in the tree control.
- CTreeFileCtrl::SetShowFiles
- void SetShowFiles(BOOL bFiles);
Parameters:
- bFiles -- TRUE if the tree control should display files in addition to folders.
Remarks:
This allows you to decide whether the tree control should display files.
- CTreeFileCtrl::GetShowFiles
- BOOL GetShowFiles() const;
Return Value:
TRUE if the tree control is displaying files otherwise FALSE.
Remarks:
This is the corollary function to the SetShowFiles().
- CTreeFileCtrl::SetAllowDragDrop
- void SetAllowDragDrop(BOOL bAllowDragDrop);
Parameters:
- bAllowDragDrop -- TRUE if the tree control should allow drag/drop of items otherwise FALSE.
Remarks:
This allows you to decide whether the tree control should allow drag/drop of items.
- CTreeFileCtrl::GetAllowDragDrop
- BOOL GetAllowDragDrop() const;
Return Value:
TRUE if the tree control is allowing drag/drop otherwise FALSE.
Remarks:
This is the corollary function to the SetAllowDragDrop().
- CTreeFileCtrl::SetAllowRename
- void SetAllowRename(BOOL bAllowRename);
Parameters:
- bAllowRename -- TRUE if the tree control should allow items to be renamed otherwise FALSE.
Remarks:
This allows you to decide whether the tree control should allow items to be renamed (via the F2
keyboard accelerator and in-place editing of items).
- CTreeFileCtrl::GetAllowRename
- BOOL GetAllowRename() const;
Return Value:
TRUE if the tree control is allowing items to be renamed otherwise FALSE.
Remarks:
This is the corollary function to the SetAllowRename().
- CTreeFileCtrl::SetAllowOpen
- void SetAllowOpen(BOOL bAllowOpen);
Parameters:
- bAllowOpen -- TRUE if the tree control should allow items to be "opened" via the shell.
Remarks:
This allows you to decide whether the tree control should allow items to be "opened" via the shell
(via the Enter keyboard accelerator and double clicking of items).
- CTreeFileCtrl::GetAllowOpen
- BOOL GetAllowOpen() const;
Return Value:
TRUE if the tree control is allowing items to be opened via the shell otherwise FALSE.
Remarks:
This is the corollary function to the SetAllowOpen().
- CTreeFileCtrl::SetAllowProperties
- void SetAllowProperties(BOOL bAllowProperties);
Parameters:
- bAllowProperties -- TRUE if the tree control should allow an item's property dialog to be
displayed.
Remarks:
This allows you to decide whether the tree control should allow property dialogs to be displayable
(via the Alt-Enter keyboard accelerator).
- CTreeFileCtrl::GetAllowProperties
- BOOL GetAllowProperties() const;
Return Value:
TRUE if the tree control is allowing an item's property dialog to be displayable otherwise FALSE.
Remarks:
This is the corollary function to the SetAllowProperties().
- CTreeFileCtrl::SetAllowDelete
- void SetAllowDelete(BOOL bAllowDelete);
Parameters:
- bAllowDelete -- RUE if the tree control should allow items to be deleted.
Remarks:
This allows you to decide whether the tree control should allow items to be deleted (via the Delete
keyboard accelerator).
- CTreeFileCtrl::GetAllowDelete
- BOOL GetAllowDelete() const;
Return Value:
TRUE if the tree control is allowing an items to be deleted otherwise FALSE.
Remarks:
This is the corollary function to the SetAllowDelete().
- CTreeFileCtrl::IsFile
- BOOL IsFile(HTREEITEM hItem);
BOOL IsFile(const CString& sPath);
Return Value:
TRUE if the tree control item or path is a file otherwise FALSE.
Parameters:
- hItem -- The tree item to be determined if it is a file.
- sPath -- The path of the object to be determined if it is a file.
Remarks:
Use these functions to determine if an item is a file.
- CTreeFileCtrl::IsFolder
- BOOL IsFolder(HTREEITEM hItem);
BOOL IsFolder(const CString& sPath);
Return Value:
TRUE if the tree control item or path is a folder otherwise FALSE.
Parameters:
- hItem -- The tree item to be determined if it is a folder / directory.
- sPath -- The path of the object to be determined if it is a folder / directory.
Remarks:
Use these functions to determine if an item is a folder / directory.
- CTreeFileCtrl::IsDrive
- BOOL IsDrive(HTREEITEM hItem);
BOOL IsDrive(const CString& sPath);
Return Value:
TRUE if the tree control item or path is a drive letter otherwise FALSE.
Parameters:
- hItem -- The tree item to be determined if it is a drive letter.
- sPath -- The path of the object to be determined if it is a drive letter.
Remarks:
Use these functions to determine if an item is a drive letter e.g. "A:\".
- CTreeFileCtrl::Rename
- BOOL Rename(HTREEITEM hItem);
Return Value:
TRUE if in-place editing of the specified item was started successfully otherwise FALSE.
Parameters:
- hItem -- The tree item to begin in-place editing of.
Remarks:
Use this function to start in-place editing i.e. renaming of the specified item. To edit a specific
path use the function SetSelectedPath().
- CTreeFileCtrl::ShowProperties
- BOOL ShowProperties(HTREEITEM hItem);
Return Value:
TRUE if the shells property dialog of the specified item was shown successfully otherwise FALSE.
Parameters:
- hItem -- The tree item to show the properties dialog of.
Remarks:
Use this function to show the standard Windows properties dialog of an item. To show the properties of
a specific path use the function SetSelectedPath().
- CTreeFileCtrl::Delete
- BOOL Delete(HTREEITEM hItem);
Return Value:
TRUE if the item was successfully deleted otherwise FALSE.
Parameters:
- hItem -- The tree item to delete.
Remarks:
Use this function to delete the specified item. To delete a specific path use the function
SetSelectedPath(). Internally the function looks at the keyboard state to implement real
deletion or moving of the item to the recycle bin. It will also use the standard confirmation dialogs
provided by the shell when you delete something.
- CTreeFileCtrl::Open
- BOOL Open(HTREEITEM hItem);
Return Value:
TRUE if the item was successfully "opened" by the shell otherwise FALSE.
Parameters:
- hItem -- The tree item to "open".
Remarks:
Use this function to "open" the specified item. In the case of an executable, the program will be run,
while in the case of a document file, the default verb as setup in the shell will be used. To execute
a specific path use the function SetSelectedPath().
- CTreeFileCtrl::SetFlags
- void SetFlags(DWORD dwFlags);
Parameters:
- dwFlags -- The flags / styles to associate with the tree control.
Remarks:
Use this function as a shortcut way of calling the SetAllow...() functions. This function
is used internally by the DDX_FileTreeControl()
function. The flags that can be used as are as follows:
| TFC_SHOWFILES | Control will show files aswell as show folders |
| TFC_ALLOWDRAGDROP | Control allows drag / drop |
| TFC_ALLOWRENAME | Control allows renaming of items |
| TFC_ALLOWOPEN | Control allows items to be "opened" by the shell |
| TFC_ALLOWPROPERTIES | Control allows the "Properties" dialog to be shown |
| TFC_ALLOWDELETE | Control allows items to be deleted |
These flags can be or'ed together when calling the function.
- DDX_FileTreeControl
- void DDX_FileTreeControl(CDataExchange* pDX, int nIDC, CTreeFileCtrl& ctrlFileTree, DWORD dwFlags);
Parameters:
- pDX -- The usual CDataExchange object which will be passed into your DoDataExchange function.
- nIDC -- The dialog ID of the tree control to subclass.
- ctrlFileTree -- Upon returnwill contain the CTreeFileCtrl control instance.
- dwFlags -- A combination of bit values to customise the display of the control. See the
function
SetFlags() for all the allowable values.
Remarks:
Associates an existing tree control with dialog ID nIDC to a CTreeFileCtrl control instance. Normally
you would call this function in your dialog class's DoDataExchange member function. Internally the
function uses the dwFlags in a call to SetFlags.().
- DDX_FileTreeValue
- void DDX_FileTreeValue(CDataExchange* pDX, CTreeFileCtrl& ctrlFileTree, CString& sItem);
Parameters:
- pDX -- The usual CDataExchange object which will be passed into your DoDataExchange function.
- ctrlFileTree -- The tree control to get or set the folder / file for.
- sItem -- The actual folder / file to get or set into the control depending on the direction of
data exchange occurring.
Remarks:
Allows the selected folder / file to be quickly set / retrieved in a CTreeFileCtrl instance using the
normal MFC DDX mechanism.
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