[fpc-pascal] re: Cannot run mplayer with TProcess when options is poUsePipes in Windows

[Vincent Snijders]

Dusan Halicky schreef:
> Well. The only way how to make mplayer visible is read all data from output
> 
> repeat
>   i := Output.Read(buf[0],100);
> until i<0;
> 
> but since my program is console application, it stay blocked on the
> last read from output and do not continue to application main loop
> None of these are problems on linux, it appears only on windows. Any
> ideas?
> 
> 

Maybe linux performs a non-blocking read (and returns 0) and windows performs a 
blocking read. You can check if there is output using NumBytesAvailable:
http://lazarus-ccr.sourceforge.net/docs/fcl/pipes/tinputpipestream.numbytesavailable.html

Vincent