[fpc-pascal] GetClipboardFormatName causing an Error 216

[Martin Frb]

On 31/12/2020 01:09, James Richters via fpc-pascal wrote:
> Var
>     FN : LPTSTR;
>
> Begin
>
>                 FN:='';
>                 Writeln(Format_ID);
>                 GetClipboardFormatName(Format_Id,FN,250);
>

Check the msdn help.
https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getclipboardformatnamea

FN must point to an existing buffer (allocated mem) that receives the 
result.

FN : Array [0..255]of Byte;
GotLen := GetClipboardFormatName(Format_Id, LPTSTR(@FN[0]),250);

then "move()" the received bytes into a string, make sure to use 
UniqueString() or similar