> Hi... i'm having a lot of trouble with a dynamic popup list...
>
> When i start up my app, everything looks fine... and all the elements are
> in the list... but when i select an element from the list, POSE tells me
> that i've just read from low memory. and after that the app dies with a
> bus error!...
>
> I've tried to crop my eventhandling down to frmOpenEvent only, and it
> still dies....
>
> Here is the code i use for drawing the list :
>
> void ProjectListDrawFunction(UInt itemNum,RectanglePtr bounds,CharPtr
> pUnused)
> {
> project_rec prec;
> DBOpen();
> if(GetProjectRec(itemNum,&prec)!=-1)
> {
>
> WinDrawChars(prec.Name,StrLen(prec.Name),bounds->topLeft.x,bounds->topLeft
> .y);
> }
> else
> WinDrawChars("Error getting project name",StrLen("Error getting
> project name"),bounds->topLeft.x,bounds->topLeft.y);
> DBClose();
> }
>
> and here is the code i go through in the eventhandler (shorted) :
> ListPtr lptr=GetObjectPtr(FrmGetActiveForm(),ProjectList);
> if(lptr!=NULL)
> {
> Word sel=LstGetSelection(lptr);
> if(sel!=noListSelection)
> {
> CharPtr pname=LstGetSelectionText(lptr,sel);
> }
> }
>
>
> I know from debugging with gdb, that the point where it dies is at
> LstGetSelectionText
> here are the values of the variables at runtime :
>
> *lptr
> (gdb) print *lptr
> $1 = {id = 5002, bounds = {topLeft = {x = 1, y = 18}, extent = {x = 156,
> y = 33}}, attr = {usable = 0, enabled = 1, visible = 0, poppedUp =
> 0,
> hasScrollBar = 0, search = 0, reserved = 0}, itemsText = 0x0,
> numItems = 1, currentItem = 0, topItem = 0, font = stdFont, popupWin =
> 0x0,
> drawItemsCallback = 0x1001b400 <ProjectListDrawFunction>}
>
> sel
> (gdb) print sel
> $2 = 0
>
> pname
> (gdb) print pname
> $3 = 0x4 ""
>
>
> Could someone please try to guide me in the rigth direction here....
>
> Jimmy
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