How do I use a placeholder like {app} or {temp} in an Inno Setup script?

Question

How can I access the (catalog) constants from the Inno Setup script?

I have tried the following with no success:

function dbExistis() : Boolean;
begin
  Result := FileExists({commonappdata} + '\LR-International\DB_LR.IB');
end;

+3

inno-setup

Christian rockrohr 23 jan. 13 at 11:02

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2 answers

Use ExpandConstant

to expand any of the constant values:

function dbExistis: Boolean;
begin
  Result := FileExists(ExpandConstant('{commonappdata}\LR-International\DB_LR.IB'));
end;

+5

TLama 23 jan. 13 at 11:04

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GeorgeVremescu · Accepted Answer · 2013-01-23T11:05:37+0000

Use ExpandConstant

function

function dbExistis() : Boolean;
  begin
    Result := FileExists(ExpandConstant('{commonappdata}') + '\LR-International\DB_LR.IB');
  end;