SccDirDiff Function
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This function displays the differences between the current local directory on the client disk and the corresponding project under source control.
SCCRTN SccDirDiff( LPVOID pContext, HWND hWnd, LPCSTR lpDirName, LONG dwFlags, LPCMDOPTS pvOptions );
Parameters
pContext
[in] The source control plug-in context structure.
hWnd
[in] A handle to the IDE window that the source control plug-in can use as a parent for any dialog boxes that it provides.
lpDirName
[in] Fully qualified path to the local directory for which to show a visual difference.
dwFlags
[in] Command flags (see Remarks section).
pvOptions
[in] Source control plug-in-specific options.
The source control plug-in implementation of this function is expected to return one of the following values:
| Value | Description |
|---|---|
| SCC_OK | The directory on disk is the same as the project in source code control. |
| SCC_I_FILESDIFFER | The directory on disk is different from the project in source code control. |
| SCC_I_RELOADFILE | A file or project needs to be reloaded. |
| SCC_E_FILENOTCONTROLLED | The directory is not under source code control. |
| SCC_E_NOTAUTHORIZED | The user is not allowed to perform this operation. |
| SCC_E_ACCESSFAILURE | There was a problem accessing the source control system, probably due to network or contention issues. A retry is recommended. |
| SCC_E_NONSPECIFICERROR SCC_E_UNKNOWNERROR | Nonspecific failure. |
| SCC_E_FILENOTEXIST | Local directory could not be found. |
This function is used to instruct the source control plug-in to display to the user a list of changes to a specified directory. The plug-in opens its own window, in a format of its choice, to display the differences between the user's directory on disk and the corresponding project under version control.
If a plug-in supports comparison of directories at all, it must support comparison of directories on a file-name basis even if the "quick-diff" options are not supported.
dwFlags | Interpretation |
|---|---|
| SCC_DIFF_IGNORECASE | Case-insensitive comparison (may be used for either quick diff or visual). |
| SCC_DIFF_IGNORESPACE | Ignores white space (may be used for either quick-diff or visual). |
| SCC_DIFF_QD_CONTENTS | If supported by the source control plug-in, silently compares the directory, byte by byte. |
| SCC_DIFF_QD_CHECKSUM | If supported by plug-in, silently compares the directory via a checksum, or, if not supported, falls back to SCC_DIFF_QD_CONTENTS. |
| SCC_DIFF_QD_TIME | If supported by plug-in, silently compares the directory via its timestamp, or, if not supported, falls back on SCC_DIFF_QD_CHECKSUM or SCC_DIFF_QD_CONTENTS. |
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This function uses the same command flags as the SccDiff. However, a source control plug-in may choose to not support the "quick-diff" operation for directories. |