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== Introduction ==
During the runtime of an installer it can be necessary to open Windows Control Panel entries.

With some exceptions (like [[Open Services panel]]) most control panel icons are implemented as .cpl files. Modern Windows operating systems come with a tool called ''rundll32.exe'' which can be used to open these files.

== Invokation ==
The following command opens the 'Add/Remove Programs' control panel entry:
<pre>
rundll32.exe shell32.dll,Control_RunDLL Appwiz.cpl
</pre>

== Using Inno Setup's [Run] section ==
<pre>
[Run]
Filename: "{sys}\rundll32.exe"; Parameters: "shell32.dll,Control_RunDLL Appwiz.cpl"
</pre>

== See also ==
*[[Open Services panel]]

== External links ==
*[http://www.computerhope.com/issues/ch000136.htm Adding/removing icons in Windows Control Panel]

[[Category:Windows Control Panel]]
[[Category:Windows services and service functions]]