File association in Inno Setup

Question

I am using Inno Setup and am trying to associate a program that is located in the Program Files (x86) in Windows 7. I have the following:

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Answer 1

Creating file associations has been answered on SO before. But the core documentation refers to it:

http://www.jrsoftware.org/isfaq.php#assoc

Creating File Associations

First set the [Setup] section directive ChangesAssociations to yes. Then create [Registry] entries as shown below.

[Registry]
Root: HKCR; Subkey: ".myp"; ValueType: string; ValueName: ""; ValueData: "MyProgramFile"; Flags: uninsdeletevalue

.myp is the extension we're associating. MyProgramFile is the internal name for the file type as stored in the registry. Make sure you use a unique name for this so you don't inadvertently overwrite another application's registry key.

Root: HKCR; Subkey: "MyProgramFile"; ValueType: string; ValueName: ""; ValueData: "My Program File"; Flags: uninsdeletekey

My Program File above is the name for the file type as shown in Explorer.

Root: HKCR; Subkey: "MyProgramFile\DefaultIcon"; ValueType: string; ValueName: ""; ValueData: "{app}\MYPROG.EXE,0"

DefaultIcon is the registry key that specifies the filename containing the icon to associate with the file type. ,0 tells Explorer to use the first icon from MYPROG.EXE. (,1 would mean the second icon.)

Root: HKCR; Subkey: "MyProgramFile\shell\open\command"; ValueType: string; ValueName: ""; ValueData: """{app}\MYPROG.EXE"" ""%1"""

shell\open\command is the registry key that specifies the program to execute when a file of the type is double-clicked in Explorer. The surrounding quotes are in the command line so it handles long filenames correctly.