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- /***********************************************************/
- /* */
- /* Amiga C Encyclopedia (ACE) V3.0 Amiga C Club (ACC) */
- /* ------------------------------- ------------------ */
- /* */
- /* Book: ACM Intuition Amiga C Club */
- /* Chapter: Requesters Tulevagen 22 */
- /* File: Example2.c 181 41 LIDINGO */
- /* Author: Anders Bjerin SWEDEN */
- /* Date: 92-05-01 */
- /* Version: 1.10 */
- /* */
- /* Copyright 1992, Anders Bjerin - Amiga C Club (ACC) */
- /* */
- /* Registered members may use this program freely in their */
- /* own commercial/noncommercial programs/articles. */
- /* */
- /***********************************************************/
-
- /* This example opens a Simple requester by calling the function */
- /* AutoRequest. It displays a message "Do you really want to quit?", */
- /* and allows the user to choose between "Yes" and "No". The program */
- /* will continue to open the requester until the user has chosen "Yes". */
-
-
-
- #include <intuition/intuition.h>
-
-
-
- struct IntuitionBase *IntuitionBase;
-
-
-
- /* The body text for the requester: */
- struct IntuiText my_body_text=
- {
- 0, /* FrontPen, colour 0 (blue). */
- 0, /* BackPen, not used since JAM1. */
- JAM1, /* DrawMode, do not change the background. */
- 15, /* LedtEdge, 15 pixels out. */
- 5, /* TopEdge, 5 lines down. */
- NULL, /* ITextFont, default font. */
- "Do you really want to quit?", /* IText, the text that will be printed. */
- NULL, /* NextText, no more IntuiText structures link. */
- };
-
- /* The positive text: */
- /* (Printed inside the left gadget) */
- struct IntuiText my_positive_text=
- {
- 0, /* FrontPen, colour 0 (blue). */
- 0, /* BackPen, not used since JAM1. */
- JAM1, /* DrawMode, do not change the background. */
- 6, /* LedtEdge, 6 pixels out. */
- 3, /* TopEdge, 3 lines down. */
- NULL, /* ITextFont, default font. */
- "Yes", /* IText, the text that will be printed. */
- NULL, /* NextText, no more IntuiText structures link. */
- };
-
- /* The negative text: */
- /* (Printed inside the right gadget) */
- struct IntuiText my_negative_text=
- {
- 0, /* FrontPen, colour 0 (blue). */
- 0, /* BackPen, not used since JAM1. */
- JAM1, /* DrawMode, do not change the background. */
- 6, /* LedtEdge, 6 pixels out. */
- 3, /* TopEdge, 3 lines down. */
- NULL, /* ITextFont, default font. */
- "No", /* IText, the text that will be printed. */
- NULL, /* NextText, no more IntuiText structures link. */
- };
-
-
-
- main()
- {
- /* Before we can use Intuition we need to open the Intuition Library: */
- IntuitionBase = (struct IntuitionBase *)
- OpenLibrary( "intuition.library", 0 );
-
- if( IntuitionBase == NULL )
- exit(); /* Could NOT open the Intuition Library! */
-
-
-
- while( !AutoRequest( NULL, &my_body_text, &my_positive_text,
- &my_negative_text, NULL, NULL, 320, 72) );
-
- /***********************************************************************/
- /* NULL, no pointer to a window structure. */
- /* &my_body_text, pointer to a IntuiText str. cont. the body text */
- /* &my_positive_text, pointer to a IntuiText str. cont. the pos. text */
- /* &my_negative_text, pointer to a IntuiText str. cont. the neg. text */
- /* NULL, IDCMP flags which will satisfy the positive gad. */
- /* NULL, IDCMP flags which will satisfy the negative gad. */
- /* 320, Width, 320 pixels wide. */
- /* 72, Height, 72 lines high. */
- /* */
- /* Intuition will automatically set the IDCMP flag RELVERIFY for both */
- /* of the gadgets, so we do not need to set any IDCMP flags if we do */
- /* not want to. */
- /* */
- /* while( !AutoRequest(...) ); */
- /* Since AutoRequest returns TRUE ("Yes") or FALSE ("No") we neggate */
- /* it (!), and can then use the statement in a while loop. As long as */
- /* the user selects the "No" gadget AutoRequest returns FALSE which */
- /* is changed into TRUE, and we stay in the while loop. When the user, */
- /* on the other hand, selects the "Yes" gadget AutoRequest() returns */
- /* TRUE, changed into FALSE, and we leave the while loop. */
- /* */
- /* The requester will look like this: */
- /* */
- /* --------------------------------------- */
- /* | System Request ================[*][*] */
- /* --------------------------------------- */
- /* | Do you really want to quit? | | */
- /* | | | */
- /* | | | */
- /* | ------- ------ | | */
- /* | | Yes | | No | | | */
- /* | ------- ------ | | */
- /* ------------------------------------[*] */
- /* */
- /***********************************************************************/
-
-
-
- /* Close the Intuition Library since we have opened it: */
- CloseLibrary( IntuitionBase );
-
- /* THE END */
- }
-