Difference between revisions of "fcl-registry"

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[[Category:FCL]]
 
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[[Category:Units]]

Revision as of 07:44, 30 April 2013

fcl-registry is an FCL unit that provides access to the Windows registry.

Registry terms

RootKey: registry hive where you want to start accessing the registry. Examples: HKEY_LOCAL_MACHINE, HKEY_CURRENT_USER

Key: the path to the "directory" that contains individual data. This is a bit counter-intuitive but a holdover from compatibility with earlier versions of the registry.

Name/value: the actual name/value pairs in the Key "directory". Each key can have a default value, whose name is (an empty string.

Example

Example that tries to get a value:

uses ... registry...

var
  CompileCommand: string='';
  Registry: TRegistry;
begin
  Registry := TRegistry.Create;
  try
    // Navigate to proper "directory":
    Registry.RootKey := HKEY_LOCAL_MACHINE;
    if Registry.OpenKeyReadOnly('\SOFTWARE\Classes\InnoSetupScriptFile\shell\Compile\Command') then
      CompileCommand:=Registry.ReadString(''); //read the value of the default name
  finally
    Registry.Free;
  end;
end;

See also

Packages List