The following was taken directly from http://www.jrsoftware.org/ishelp/index.php?topic=isxfunc_createinputdirpage
// Create the page
Page := CreateInputDirPage(wpWelcome,
'Select Personal Data Location', 'Where should personal data files be stored?',
'Personal data files will be stored in the following folder.'#13#10#13#10 +
'To continue, click Next. If you would like to select a different folder, click Browse.',
False, 'New Folder');
// Add item (with an empty caption)
Page.Add('');
Page.Add('');
Page.Values[1] := 'DefaultValue';
This creates a page with two textboxes. The first textbox is empty, the second is "DefaultValue" a string with the current directory prepended to it.
How do I create a default value that does not have the current directory prepended?
If you use a relative path, the Inno Setup resolves it relatively to the current working directory (as all Windows applications do).
Use an absolute path instead.
Page.Values[1] := 'C:\path\to\default\folder';