DirTree Unicode C Reference Documentation
DirTree
Current Version: 10.1.2
API for iterating over the files and sub-directories in a directory tree. The intent of this class is to provide a simplified, non-recursive way to iterate over an entire directory tree.
Create/Dispose
HCkDirTreeW instance = CkDirTreeW_Create(); // ... CkDirTreeW_Dispose(instance);
Creates an instance of the HCkDirTreeW object and returns a handle ("void *" pointer). The handle is passed in the 1st argument for the functions listed on this page.
Objects created by calling CkDirTreeW_Create must be freed by calling this method. A memory leak occurs if a handle is not disposed by calling this function. Also, any handle returned by a Chilkat "C" function must also be freed by the application by calling the appropriate Dispose method, such as CkDirTreeW_Dispose.
Properties
BaseDir
void CkDirTreeW_putBaseDir(HCkDirTreeW cHandle, const wchar_t *newVal);
const wchar_t *CkDirTreeW_baseDir(HCkDirTreeW cHandle);
DebugLogFilePath
void CkDirTreeW_putDebugLogFilePath(HCkDirTreeW cHandle, const wchar_t *newVal);
const wchar_t *CkDirTreeW_debugLogFilePath(HCkDirTreeW cHandle);
If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.
Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.
Possible causes of hangs include:
- A timeout property set to 0, indicating an infinite timeout.
- A hang occurring within an event callback in the application code.
- An internal bug in the Chilkat code causing the hang.
DoneIterating
Set to TRUE when the last file or sub-directory has been iterated.
topFileSize32
The file size of the current file in the iteration. (0 if it is a directory.)
topFileSize64
The file size as a 64-bit integer of the current file in the iteration. (0 if it is a directory.)
topFileSizeStr
const wchar_t *CkDirTreeW_fileSizeStr(HCkDirTreeW cHandle);
The file size of the current file in the iteration as a decimal string. (0 if it is a directory.)
topFullPath
const wchar_t *CkDirTreeW_fullPath(HCkDirTreeW cHandle);
The absolute directory path of the current file or sub-directory.
topFullUncPath
const wchar_t *CkDirTreeW_fullUncPath(HCkDirTreeW cHandle);
The absolute UNC directory path of the current file or sub-directory.
topIsDirectory
TRUE if the current position is a sub-directory, FALSE if it is a file.
topLastErrorHtml
const wchar_t *CkDirTreeW_lastErrorHtml(HCkDirTreeW cHandle);
Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastErrorText
const wchar_t *CkDirTreeW_lastErrorText(HCkDirTreeW cHandle);
Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
LastErrorXml
const wchar_t *CkDirTreeW_lastErrorXml(HCkDirTreeW cHandle);
Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastMethodSuccess
void CkDirTreeW_putLastMethodSuccess(HCkDirTreeW cHandle, BOOL newVal);
Indicates the success or failure of the most recent method call: TRUE means success, FALSE means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.
topRecurse
void CkDirTreeW_putRecurse(HCkDirTreeW cHandle, BOOL newVal);
If TRUE, the iteration will be recursive. If FALSE the iteration is non-recursive. The default value is TRUE.
topRelativePath
const wchar_t *CkDirTreeW_relativePath(HCkDirTreeW cHandle);
The relative directory path of the current file or sub-directory. (Relative to the BaseDir)
topVerboseLogging
void CkDirTreeW_putVerboseLogging(HCkDirTreeW cHandle, BOOL newVal);
If set to TRUE, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is FALSE. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.
topVersion
const wchar_t *CkDirTreeW_version(HCkDirTreeW cHandle);
Methods
AdvancePosition
Advances the current position in the directory tree traversal to the next file or sub-directory.
Important: If AdvancePosition returns FALSE, it can be an error, or it could be that there are no more files and directories. To distinguish between the two cases, examine the DoneIterating property. If DoneIterating is TRUE, then the FALSE return value is not an error, but instead indicates that the end has been reached.
Returns TRUE for success, FALSE for failure.
BeginIterate
Begins a directory tree traversal. After calling this method, the various property values such as Fullpath, FileSize32, etc. can be retrieved for the 1st file / sub-directory in the traversal.
Important: If BeginIterate returns FALSE, it can be an error, or it could be that there are 0 files and directories. To distinguish between the two cases, examine the DoneIterating property. If DoneIterating is TRUE, then the FALSE return value is not an error, but instead indicates 0 files/directories.
Returns TRUE for success, FALSE for failure.
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