BBC BASIC for Windows
Programming >> Libraries >> MULTIWIN libary updated
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MULTIWIN libary updated
Post by rtr on Aug 4th, 2014, 10:50am

I have updated the MULTIWIN library to v2.1. It may be downloaded from here and should be copied into your LIB folder (administrative privileges will be required).

This version has added support for initialising 'graphicboxes' (custom BBC dialogue controls).

Richard.
Re: MULTIWIN libary updated
Post by KenDown on Sep 29th, 2015, 09:37am

I *presume* this is a reference to FN_initctrl, which takes three parameters. I can't find any reference to this function in the Help files.

I'm guessing that D% is the dialog box handle, I% is the icon number, but N% has me baffled. Anyway, where do you set the size of the icon?

Richard can be terribly cryptic at times.
Re: MULTIWIN libary updated
Post by DDRM on Sep 29th, 2015, 11:40am

Hi Ken,

It's explained on the wiki:

http://bb4w.wikispaces.comCreating+a+custom+graphics+control

FN_initctrl allows you to insert a BB4W window as a control in a dialogue box:

"The parameters passed to FN_initctrl are the dialogue box pointer (as returned from FN_newdialog), the ID number assigned to the control (as specified in the call to PROC_dlgctrl) and the window number (between 1 and the number specified in the call to PROC_multiwin)".

Best wishes,

D
Re: MULTIWIN libary updated
Post by KenDown on Sep 29th, 2015, 6:22pm

Ah, thanks.

I wonder if there is any practical limit on the number of windows one can have? I have 9 in the program I am currently writing and if I were to add in one or two in a dialog box that would bring it up to 11, and so on.
Re: MULTIWIN libary updated
Post by sveinioslo on Sep 29th, 2015, 7:35pm

Why don't you try this and find out for yourself ;D

Close with ALT-F4
Code:
      REM Close with ALT-F4

      INSTALL @lib$+"WINLIB5A"
      INSTALL @lib$+"MULTIWIN"

      SYS "GetSystemMetrics", 0 TO xscreen%
      SYS "GetSystemMetrics", 1 TO yscreen%

      Max%=1000
      PROC_multiwin(Max%)
      ON CLOSE PROCcleanup : QUIT

      FOR I%=1 TO Max%
        hw1% = FN_createwin(I%, "Window "+STR$I%, X%, Y%, 100, 100, 0, &96C00000, 0)
        X%+=30 : IF X% >=xscreen%-100 THEN X%=0 : Y%+=100
        IF Y%>yscreen%-100 THEN Max%=I% : EXIT FOR
      NEXT I%

      REPEAT
        FOR I%=1 TO Max%
          PROC_selectwin(I%)
          COLOUR RND(15)-1
          PRINT '"Hello world!";
        NEXT I%
        WAIT 20
      UNTIL FALSE

      DEF PROCcleanup
      PROC_selectwin(0)
      FOR I%=1 TO Max%
        PROC_closewin(I%)
      NEXT I%
      ENDPROC


Svein

Re: MULTIWIN libary updated
Post by KenDown on Sep 29th, 2015, 8:02pm

He he! Very clever. I got up to 610 on my computer and presumably it could have gone further if there had been more room on the screen.

Still, if those windows were larger, things might have been a little different. I'm intrigued by the comment someone made about a window having a bitmap - and bitmaps take up memory.