Setting Up the Source and Destination Directories

Use the SourceDirectory, DestinationDirectory and SuggestedDestination properties along with the InstallCheck method to set up the source and destination directories for your installation component. The following code snippet uses two TDirectoryListBox components, SrcDir and DestDir, to allow the user to change the source and destination directories. The InstallCheck method checks to see if everything is prepared for the installation.

try
IBInstall1.SourceDirectory := SrcDir.Directory;
IBInstall1.DestinationDirectory := DestDir.Directory;
IBInstall1.InstallCheck;
except
on E:EIBInstallError do
begin
Label1.Caption := '';
Cancel.Visible := False;
Execute.Visible := True;
ProgressBar1.Visible := False;
Exit;
end;
end;