For generic information, see:
In Inno Setup, you implement this using [Registry]
section:
[Registry]
; Create the application capability key
; (The location of the key does not matter)
Root: HKLM; Subkey: "Software\My Company"; Flags: uninsdeletekeyifempty
Root: HKLM; Subkey: "Software\My Company\My Program"; Flags: uninsdeletekeyifempty
Root: HKLM; Subkey: "Software\My Company\My Program\Capability"; \
ValueType: string; ValueName: "ApplicationDescription"; \
ValueData: "This is My Program that does stuff"; Flags: uninsdeletevalue
Root: HKLM; Subkey: "Software\My Company\My Program\Capability"; \
ValueType: string; ValueName: "ApplicationName"; ValueData: "My Program"; \
Flags: uninsdeletevalue
; List of extensions the application supports
Root: HKLM; \
Subkey: "Software\My Company\My Program\Capability\FileAssociations"; \
ValueType: string; ValueName: ".jpg"; ValueData: "MyProgram.JPEG"; \
Flags: uninsdeletevalue
; Add the capability key to list of registered applications
Root: HKLM; Subkey: "Software\RegisteredApplications"; \
ValueType: string; ValueName: "My Program"; \
ValueData: "Software\My Company\My Program\Capability"; \
Flags: uninsdeletevalue
; For each extension that the application supports
Root: HKCR; Subkey: "MyProgram.JPEG"; Flags: uninsdeletekeyifempty
Root: HKCR; Subkey: "MyProgram.JPEG"; \
ValueType: string; ValueName: ""; ValueData: "MyProgram JPEG"; \
Flags: uninsdeletevalue
Root: HKCR; Subkey: "MyProgram.JPEG\DefaultIcon"; Flags: uninsdeletekeyifempty
Root: HKCR; Subkey: "MyProgram.JPEG\DefaultIcon"; \
ValueType: string; ValueName: ""; ValueData: "{app}\MyProg.exe,1"; \
Flags: uninsdeletevalue
Root: HKCR; Subkey: "MyProgram.JPEG\Shell"; Flags: uninsdeletekeyifempty
Root: HKCR; Subkey: "MyProgram.JPEG\Shell\open"; Flags: uninsdeletekeyifempty
Root: HKCR; Subkey: "MyProgram.JPEG\Shell\open\Command"; \
Flags: uninsdeletekeyifempty
Root: HKCR; Subkey: "MyProgram.JPEG\Shell\open\Command"; \
ValueType: string; ValueName: ""; ValueData: """{app}\MyProg.exe"" ""%1"""; \
Flags: uninsdeletevalue
In Inno Setup 6, you should modify the code as follows to support non-administrative install mode:
- Replace
HKLM
in the first block with HKA
;
- Replace
HKCR
with HKA
and add the Software\Classes\
prefix to the Subkey
in the second block.

