Re: Questions I should have asked

["Daniel K. O." <danielosmari yahoo com br>]

Nix N. Nix wrote:

> - Check if the dropline.net/gtk Runtime Environment is installed
>  -  If not, it pops a message box telling the user that installation
>     cannot proceed, and points them to dropline.net/gtk, asking them to
>     download the GTK runtime environment
>  -  If yes, the installer picks up the GTK Runtime installation path 
>     from the registry and adds it to the AppPaths registry key for
>     your_application.exe.
>  

Making your app dependant of another installation isn't very friendly. 
You should suggest the installation, but not require it.
Sometimes the user already have the GTK+ DLLs installed in the path. 
Then the user have to install the dropline/whatever GTK+ setup, install 
the app, and then uninstall the dropline/whatever setup (to use the 
previous installed DLLs). I  gave up installing some GTK+ apps on my 
windows box because of that. I always recommend to try a LoadLibrary() 
call if it can't find the correct setup in the registry, just in case 
the user manually installed the runtime libs.


> [Code]
>
> var
>  Exists: Boolean;
>  GtkPath: String;
>
> function GetGtkInstalled (): Boolean;
> begin
>  Exists := RegQueryStringValue (HKLM, 'Software\GTK\2.0', 'Path', GtkPath);
>  if not Exists then begin
>    Exists := RegQueryStringValue (HKCU, 'Software\GTK\2.0', 'Path', GtkPath);
>  end;
>   Result := Exists
> end;
>
> function GetGtkPath (S: String): String;
> begin
>    Result := GtkPath;
> end;
>
> function InitializeSetup(): Boolean;
> begin
>  Result := GetGtkInstalled ();
>  if not Result then begin
>    MsgBox ('Please install the GTK+ 2.0 Runtime Environment before installing QCADesigner.  You can obtain 
> GTK+ from http://www.dropline.net/gtk .', mbError, MB_OK);
>  end;
> end;
>  

THIS is the kind of setup I was talking about! :-(



Daniel K. O.