Example: Background Bitmap
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10 ! *********************************************************************
20 ! Example: Background Bitmap
30 !
40 ! This program demonstrates the BACKGROUND BITMAP attribute
50 ! of the PANEL widget by allowing you to bring in a bitmap
60 ! file and use it to tile the PANEL.
70 !
80 ! ******************************************************************
90 !
100 ! Some variables:
110 !
120 ! S$: String variable
130 ! M$: SYSTEM MENU array
140 ! F$: Bitmap file name
150 ! N: INTEGER variable
160 ! Btn: Variable to get button inputs from dialogs
170 ! D(*): Array to get display dimensions
180 ! Dw,Dh: Display dimensions
190 !
200 DIM S$[256],M$(0:1)[32],F$[50]
210 INTEGER N,Btn,D(1:4),Dw,Dh
220 !
230 ! Get display size
240 !
250 GESCAPE CRT,3;D(*) ! Gets display lines
260 Dw=D(3)-D(1)
270 Dh=(D(4)-D(2))
280 !
290 ! Set up SYSTEM MENU array
300 !
310 M$(0)="Get Bitmap File"
320 M$(1)="Quit"
330 !
340 ! Create the PANEL widget, add a toaster menu
350 !
360 CLEAR SCREEN
370 ASSIGN @Main TO WIDGET "PANEL";SET ("VISIBLE":0)
380 CONTROL @Main;SET ("X":50,"Y":20,"WIDTH":.8*Dw,"HEIGHT":.8*Dh)
390 CONTROL @Main;SET ("MAXIMIZABLE":0,"RESIZABLE":0)
400 CONTROL @Main;SET ("TITLE":" Example: Background Bitmap")
410 CONTROL @Main;SET ("SYSTEM MENU":M$(*),"VISIBLE":1)
420 !
430 ON EVENT @Main,"SYSTEM MENU" GOSUB Handler
440 LOOP
450 WAIT FOR EVENT
460 END LOOP
470 STOP
480 !
490 ! ***************** End of Main Program ***********************
500 !
510 Handler: !
520 STATUS @Main;RETURN ("SYSTEM MENU EVENT":N)
530 SELECT N
540 CASE 0
550 S$="Please enter bitmap file name:"
560 DIALOG "FILE",S$,Btn;RETURN ("SELECTION":F$)
570 IF Btn=0 THEN
580 CLEAR ERROR
590 ON ERROR GOSUB Errtrap
600 CONTROL @Main;SET ("BACKGROUND BITMAP":F$)
610 OFF ERROR
620 IF ERRN<>0 THEN DIALOG "ERROR",ERRM$
630 END IF
640 CASE 1
650 GOTO Finis
660 END SELECT
670 RETURN
680 !
690 Errtrap: ERROR RETURN
700 !
710 Finis: !
720 ASSIGN @Main TO * ! Delete PANEL Widget
730 END
