Share via

SccDirDiff function

  • Article

Applies to: yesVisual Studio noVisual Studio for Mac

Note

This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here

This function displays the differences between the current local directory on the client disk and the corresponding project under source control.

Syntax

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.

Return value

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.

Remarks

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.

Note

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.

See also