graphic line input

[tom kroto]

I am using the graphic window to display instructions regarding the data to be enter. BUT this time I want the entry data to come from the graphic window because pbcc5.0 says I can now.

what is happening:
As you see it the window appears but it is empty.

If I put the redraw after the last graphic print I see the instructions but not the graphic line input

GRAPHIC WINDOW " tomkroto-tk5c03", 700&, 400&, 400, 400& TO hwin???
'window = x=col,y=row,width,height for variables
GRAPHIC ATTACH hwin???, 0, REDRAW
GRAPHIC SET POS (00,10)
GRAPHIC FONT "Times New Roman", 10, 0
GRAPHIC PRINT "************ tk4c52dat.txt holds all info"
GRAPHIC PRINT "tk5c03 sort data and place in clipboard and/or xprint"
GRAPHIC PRINT " enter -quit- to stop pgm, -savit- to send to clipboard"
GRAPHIC PRINT " note: for quit/savit open document first then do quit/savit "
GRAPHIC PRINT " p=print,=connect,^delete,!add to,~add in front),% add constant to front "


GRAPHIC LINE INPUT " enter data element " XXde
GRAPHIC REDRAW ' this made window show print see sample
GRAPHIC WINDOW END


Thanks for your ideas and clarifications

[Paul Dixon]

Tom,
try using

GRAPHIC ATTACH hwin???, 0

instead of

GRAPHIC ATTACH hwin???, 0, REDRAW

Paul.

[tom kroto]

ok

yes that worked....Can you give me simple premise behind this change. Thanks.

[Paul Dixon]

Tom,
when you specify ,REDRAW in the GRAPHIC ATTACH statement the graphic window is only updated on screen when you force it by using GRAPHIC REDRAW yourself.
During a GRAPHIC LINE INPUT this can be difficult as you'd need to have some task running in the background to update the window while the LINE INPUT was taking place.

If you don't use the ,REDRAW option in the GRAPHIC ATTACH statement then the window is automatically updated for you every time anything is drawn to the screen. While this can make drawing to the window slower, it is the more appropriate option in this case.

Paul.