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- /***********************************************************/
- /* */
- /* Amiga C Encyclopedia (ACE) V3.0 Amiga C Club (ACC) */
- /* ------------------------------- ------------------ */
- /* */
- /* Book: ACM Intuition Amiga C Club */
- /* Chapter: IDCMP 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 program explains how to use the IDCMP flag MOUSEMOVE. */
-
-
-
- #include <intuition/intuition.h>
-
-
-
- struct IntuitionBase *IntuitionBase;
-
-
-
- /* Declare a pointer to a Window structure: */
- struct Window *my_window;
-
- /* Declare and initialize your NewWindow structure: */
- struct NewWindow my_new_window=
- {
- 50, /* LeftEdge x position of the window. */
- 25, /* TopEdge y positio of the window. */
- 320, /* Width 320 pixels wide. */
- 100, /* Height 100 lines high. */
- 0, /* DetailPen Text should be drawn with colour reg. 0 */
- 1, /* BlockPen Blocks should be drawn with colour reg. 1 */
- CLOSEWINDOW| /* IDCMPFlags We will recieve a message when the user: */
- /* selects the Close window gad, or when the */
- MOUSEMOVE, /* user moves the mouse. */
- SMART_REFRESH| /* Flags Intuition should refresh the window. */
- WINDOWCLOSE| /* Close Gadget. */
- WINDOWDRAG| /* Drag gadget. */
- WINDOWDEPTH| /* Depth arrange Gadgets. */
- WINDOWSIZING| /* Sizing Gadget. */
- ACTIVATE| /* The window should be Active when opened. */
-
- REPORTMOUSE, /* Create MOUSEMOVE messages whenever this */
- /* window is active and the mouse is moved. */
-
- NULL, /* FirstGadget No gadgets connected to this window. */
- NULL, /* CheckMark Use Intuition's default CheckMark. */
- "MOVE THE MOUSE", /* Title Title of the window. */
- NULL, /* Screen Connected to the Workbench Screen. */
- NULL, /* BitMap No Custom BitMap. */
- 100, /* MinWidth We will not allow the window to become */
- 50, /* MinHeight smaller than 100 x 50, and not bigger */
- 400, /* MaxWidth than 400 x 200. */
- 200, /* MaxHeight */
- WBENCHSCREEN /* Type Connected to the Workbench Screen. */
- };
-
-
-
- /***********************************************************************/
- /* Extra information: */
- /* If we set the IDCMP flag MOUSEMOVE then we tell Intuition that we */
- /* are interested in MOUSEMOVE events. However, we must tell Intuition */
- /* how and when these messages should be created. There exist two */
- /* ways to do it: */
- /* 1. Set the flag FOLLOWMOUSE in the Activation field in the Gadget */
- /* structure. We will then recieve messages whenever the gadget is */
- /* selected and the mouse is moved. */
- /* 2. Set the flag REPORTMOUSE in the Flag field in the NewWindow */
- /* structure. We will then recieve messages whenever the window is */
- /* active and the mouse is moved. (Showed in this example.) */
- /***********************************************************************/
-
-
-
- main()
- {
- /* Boolean variable used for the while loop: */
- BOOL close_me;
-
- ULONG class; /* IDCMP flag. */
-
- SHORT x, y; /* Position of the mouse (x,y). */
-
- BOOL mouse_moved;
-
- /* Pointer to an IntuiMessage structure: */
- struct IntuiMessage *my_message;
-
-
-
- /* 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! */
-
-
-
- /* We will now try to open the window: */
- my_window = (struct Window *) OpenWindow( &my_new_window );
-
- /* Have we opened the window succesfully? */
- if(my_window == NULL)
- {
- /* Could NOT open the Window! */
-
- /* Close the Intuition Library since we have opened it: */
- CloseLibrary( IntuitionBase );
-
- exit();
- }
-
-
-
- /* We have opened the window, and everything seems to be OK. */
-
- printf("Move the mouse!\n");
-
-
-
- close_me = FALSE;
-
- /* Stay in the while loop until the user has selected the Close window */
- /* gadget: */
- while( close_me == FALSE )
- {
- mouse_moved = FALSE;
-
-
- /* Wait until we have recieved a message: */
- Wait( 1 << my_window->UserPort->mp_SigBit );
-
- /* As long as we can collect messages successfully we stay in the */
- /* while-loop: */
- while(my_message = (struct IntuiMessage *) GetMsg(my_window->UserPort))
- {
- /* After we have successfully collected the message we can read */
- /* it, and save any important values which we maybe want to check */
- /* later: */
- class = my_message->Class; /* IDCMP flag. */
- x = my_message->MouseX; /* X position of the mouse. */
- y = my_message->MouseY; /* Y position of the mouse. */
-
-
- /* After we have read it we reply as fast as possible: */
- /* REMEMBER! Do never try to read a message after you have replied! */
- /* (Some other process has maybe changed it.) */
- ReplyMsg( my_message );
-
-
- /* Check which IDCMP flag was sent: */
- switch( class )
- {
- case CLOSEWINDOW: /* The user selected the Close window gadget! */
- close_me=TRUE;
- break;
-
- case MOUSEMOVE: /* The user moved the mouse. */
- mouse_moved = TRUE;
- break;
- }
- }
-
- if( mouse_moved )
- {
- /* Since we recieve so many messages when the mouse is moved, we */
- /* respond first when the mouse has halted. Print out the mouse */
- /* position relative to the top left corner of the window. */
- printf("New position: (%d, %d)\n", x, y);
- }
- }
-
-
-
- /* Close the window: */
- CloseWindow( my_window );
-
-
-
- /* Close the Intuition Library: */
- CloseLibrary( IntuitionBase );
-
- /* THE END */
- }
-
-
-
-