EAO102@psuvm.psu.edu (Ernie Oporto) (06/24/91)
I'm having trouble updating a few windows in a program. I'm still a
novice mac programmer, (as if you couldn't tell), so please bear with
me. I'll get there. I use the UpdateMyPictures subprogram below to
update at UpdateEvt's. However, only the gStasisWindow gets updated
and all the rest keep their areas erased of whatever was covered in them.
Each window has a PICT that is unique to it, so I use UpdateMyPictures
to tell which is which and what PICT needs to be accessed and drawn im
that window. I use the Mac Programming Primer to do my programming,
so if you have any references from there or any advice/algorithms/code
you'd like to pass on,please do. Any help would be really appreciated.
I do not own any of the Inside Mac or Mac Revealed (I'll get them when
I can someday afford it), so dont give references for them. I would
really like to know what routines people use and I'd like to see any
source code that would help me out or solve my problem. The code below
is a sample of what is in my program. I only included the important
parts to show how I created my windows and how I *tried* to keep them
all updated:
/*** main ***/
main()
{
ToolBoxInit();
SplashInit();
SetUpDragRect();
SetUpSizeRect();
MenuBarInit();
StasisInit();
ClockInit();
MainLoop();
}
/*** ToolBoxInit ***/
ToolBoxInit()
{
InitGraf(&thePort);
InitFonts();
FlushEvents(everyEvent,REMOVE_ALL_EVENTS);
InitWindows();
InitMenus();
TEInit();
InitDialogs(NIL_POINTER);
InitCursor();
}
/*** SplashInit ***/
SplashInit()
{
CreateWindow(BASE_RES_ID,gSplashWindow,gSplashPict);
while(!Button());
DisposeWindow(gSplashWindow);
}
/*** StasisInit ***/
StasisInit()
{
CreateWindow(BASE_RES_ID+1,gStasisWindow,gStasisPict);
}
/*** ClockInit ***/
ClockInit()
{
gClockWindow=GetNewWindow(BASE_RES_ID+10,NIL_POINTER,MOVE_TO_FRONT);
ShowWindow(gClockWindow);
SetPort(gClockWindow);
}
/*** MainLoop ***/
MainLoop()
{
gDone=FALSE;
gWNEImplemented=(NGetTrapAddress(WNE_TRAP_NUM,ToolTrap)!=
NGetTrapAddress(UNIMPL_TRAP_NUM,ToolTrap));
while(gDone==FALSE)
{
HandleEvent();
}
}
/*** HandleEvent ***/
HandleEvent()
{
char theChar;
GrafPtr oldPort;
if (gWNEImplemented)
WaitNextEvent(everyEvent,&gTheEvent,MIN_SLEEP,NIL_MOUSE_REGION);
else
{
SystemTask();
GetNextEvent(everyEvent,&gTheEvent);
}
switch(gTheEvent.what)
{
.
.
.
case updateEvt:
if(!IsDAWindow(gTheEvent.message))
{
GetPort(&oldPort);
SetPort(gTheEvent.message);
BeginUpdate(gTheEvent.message);
UpdateWindows();
EndUpdate(gTheEvent.message);
SetPort(oldPort);
}
break;
}
}
/*** HandleFileChoice ***/
HandleFileChoice(theItem)
int theItem;
{
WindowPtr whichWindow;
switch(theItem)
{
case HEIGHT_ITEM:
CreateWindow(BASE_RES_ID+2,gHeightWindow,gHeightPict);
break;
case WEIGHT_ITEM:
CreateWindow(BASE_RES_ID+3,gWeightWindow,gWeightPict);
break;
case HAIR_ITEM:
CreateWindow(BASE_RES_ID+4,gHairWindow,gHairPict);
break;
case EYES_ITEM:
CreateWindow(BASE_RES_ID+5,gEyesWindow,gEyesPict);
break;
case AGE_ITEM:
CreateWindow(BASE_RES_ID+6,gAgeWindow,gAgePict);
break;
case ADDRESS_ITEM:
CreateWindow(BASE_RES_ID+8,gAddressWindow,gAddressPict);
break;
case PHONE_ITEM:
CreateWindow(BASE_RES_ID+9,gPhoneWindow,gPhonePict);
break;
case CLOSE_ITEM:
if(((whichWindow=FrontWindow())!=gStasisWindow)&&
((whichWindow=FrontWindow())!=gClockWindow))
{
if((whichWindow=FrontWindow())!=NIL_POINTER)
DisposeWindow(whichWindow);
}
break;
case QUIT_ITEM:
gDone=TRUE;
break;
}
}
/*** CreateWindow ***/
CreateWindow(theResId,theWindow,thePict)
int theResId;
WindowPtr theWindow;
PicHandle thePict;
{
theWindow=GetNewWindow(theResId,NIL_POINTER,MOVE_TO_FRONT);
ShowWindow(theWindow);
SetPort(theWindow);
thePict=GetPicture(theResId);
DrawMyPicture(thePict,theWindow);
}
/*** DrawMyPicture ***/
DrawMyPicture (thePicture,pictureWindow)
PicHandle thePicture;
WindowPtr pictureWindow;
{
Rect myRect;
myRect=pictureWindow->portRect;
CenterPict(thePicture,&myRect);
SetPort(pictureWindow);
DrawPicture(thePicture,&myRect);
}
UpdateWindows()
{
if ((WindowPtr)gTheEvent.message==gStasisWindow)
DrawMyPicture(gStasisPict,gStasisWindow);
if ((WindowPtr)gTheEvent.message==gHeightWindow)
DrawMyPicture(gHeightPict,gHeightWindow);
if ((WindowPtr)gTheEvent.message==gWeightWindow)
DrawMyPicture(gWeightPict,gWeightWindow);
if ((WindowPtr)gTheEvent.message==gHairWindow)
DrawMyPicture(gHairPict,gHairWindow);
if((WindowPtr)gTheEvent.message==gEyesWindow)
DrawMyPicture(gEyesPict,gEyesWindow);
if ((WindowPtr)gTheEvent.message==gAgeWindow)
DrawMyPicture(gAgePict,gAgeWindow);
if ((WindowPtr)gTheEvent.message==gAddressWindow)
DrawMyPicture(gAddressPict,gAddressWindow);
if ((WindowPtr)gTheEvent.message==gPhoneWindow)
DrawMyPicture(gPhonePict,gPhoneWindow);
}
--Ernie SHOKK Oporto
******** * * ******** * ** * ** EAO102@PSUVM.PSU.EDU
** * * * * * ** * ** Student
**** ******** * * **** **** Computer Laboratory
** * * * * * ** * ** Attendant of the
******** * * ******** * ** * ** PennState University
Center for Academic
Computing