Quote

> After upgrading to Delphi 6 from D5 Pro we have experienced a problem
> in compilation of a program that uses GLScene for graphics rendering.
> Below is information on the problem:

> 1. error message during compilation:
> [Error] GLScreen.pas(288): Variable name expected
> [Fatal Error] GLSceneRegister.pas(39): Could not compile used unit
> 'GLScreen.pas'

> 2. Here is the actual code:

> procedure RestoreDefaultMode;
> // restores default desktop video mode
> //Here is the problem:
> var T : TDevMode absolute 0; // a little trick to create a nil pointer

> begin
> {Since the first parameter must be a var, we cannot use nil directly.
> Instead we use a variable with an absolute address of 0.}
>   ChangeDisplaySettings(T,CDS_FULLSCREEN);
> end;

> This part worked fine with Delphi 5 and it comes from GLScene without
> modification by us...

> Any suggestions on how to proceed?

> Bo Berglund
> bo.bergl...@telia.com