How To use Guiffy from Windows Explorer

From Windows Explorer you can select two files or two folders, and run Guiffy to do a Compare.

In order to install the shell extension that provides Explorer integration, you first need to know whether you are running on a 32 bit (X86) Windows platform or 64 bit (X64) platform.

If you are unsure whether you are on a 64 bit or 32 bit machine, you can type the following command in a DOS window:
echo %PROCESSOR_ARCHITECTURE%
On a 32 bit X86 machine you will see X86
On a 64 bit X64 machine you will see AMD64

Here's how to setup Guiffy in Explorer's context menu on 32 bit Windows platforms:

Login with administrative rights
Create a folder outside the Guiffy install folder with a name like GuiffyShellExtension.
Unzip the GuiffyWext.zip file in Guiffy's install folder to your GuiffyShellExtension folder.
Open a DOS command window, (Note: On a Windows Vista machine, type cmd.exe in the search box, hold Ctrl and Shift key and press enter. You should see "administrator" in the title of the command window to indicate you have elevated privilege), CD to your GuiffyShellExtension folder. Enter the following command to register Guiffy's context menu:
regsvr32 GuiffyWext.dll

Here's how to setup Guiffy in Explorer's context menu on 64 bit Windows platforms:

Login with administrative rights
Create a folder outside the Guiffy install folder with a name like GuiffyShellExtension.
Unzip the GuiffyWext64.zip file in Guiffy's install folder to your GuiffyShellExtension folder.
Open a DOS command window with adminstrative rights by right clicking on a command prompt shortcut from the start menu and selecting Run as administrator (Note: You should see "administrator" in the title of the command window to indicate you have elevated privilege), CD to your GuiffyShellExtension folder. Enter the following command to register Guiffy's context menu:
regsvr32 GuiffyWext64.dll

NOTES:

You only need to install the Explorer context menu once. The Guiffy context menu shell extension automatically detects and uses the latest release of Guiffy installed.
To uninstall the Guiffy shell extenstion --- unregister the context menu. Open a DOS command window, CD to your GuiffyShellExtension folder.
Enter the following command to unregister Guiffy's context menu on 32 bit Windows:
regsvr32 /u GuiffyWext.dll
Enter the following command to unregister Guiffy's context menu on 64 bit Windows:
regsvr32 /u GuiffyWext64.dll
Then, if you wish, delete the GuiffyShellExtension folder.

Here's how to do Guiffy file or folder compares from Windows Explorer:

Click on one file/folder to select it.
Ctrl-Click on the other file/folder to select it.
Then, Right-Click and click on Guiffy Compare.
--OR--
Click on the first file/folder, right-click and click on "Select Guiffy 1st to Compare"
Click on the second file/folder, right-click and click on "Compare to [first path selected]"

Documentation by Guiffy Software, Inc. 2015