GerixSoft

InnoSetup does not support Windows system font, it is using MS Sans Serif 8 instead.

Use the following code to fix this:

#include "fixfonts.iss"

procedure InitializeWizard();
begin
  SetSystemFont(WizardForm.Font);
  FixSystemFont(WizardForm);
end;

fixfonts.iss is attached below. This code has been in use in IndieVolume for years, confirmed to work ok.